diff --git a/backend/crates/providers/openai/src/credential/catalog.rs b/backend/crates/providers/openai/src/credential/catalog.rs
index f9ac83dae..537638978 100644
--- a/backend/crates/providers/openai/src/credential/catalog.rs
+++ b/backend/crates/providers/openai/src/credential/catalog.rs
@@ -29,6 +29,8 @@ use crate::transport::{CodexBackendClient, CodexCatalogModel, CodexRequestContex
 
 const MAX_RESPONSE_ETAG_BYTES: usize = 256;
 const PLAN_CATALOG_CACHE_TTL: Duration = Duration::from_secs(5 * 60);
+// 调度证据覆盖默认 15 分钟刷新周期及抖动，长期未刷新时恢复上游验证
+const SCHEDULING_CATALOG_MAX_AGE: Duration = Duration::from_secs(30 * 60);
 const MAX_CATALOG_FETCH_ATTEMPTS: usize = 3;
 const MAX_PLAN_CATALOG_MODELS: usize = 2_048;
 const MAX_CLIENT_CATALOGS: usize = 32;
@@ -537,6 +539,47 @@ impl CodexCredentialCatalogService {
             .map(|models| models.map(<[String]>::to_vec))
     }
 
+    /// 新鲜 OAuth 套餐目录只约束已发现的模型，未知目录与模型继续交由上游判断
+    pub(crate) fn scheduling_exclusions(
+        &self,
+        accounts: &[ProviderAccount],
+        model: &str,
+        now: SystemTime,
+    ) -> BTreeSet<ProviderAccountId> {
+        let Ok(cache) = self.cache.read() else {
+            return BTreeSet::new();
+        };
+        let Some(snapshot) = cache.snapshot.as_ref().filter(|snapshot| {
+            now.duration_since(snapshot.observed_at)
+                .is_ok_and(|age| age < SCHEDULING_CATALOG_MAX_AGE)
+        }) else {
+            return BTreeSet::new();
+        };
+        // API Key 的自定义目录不能为 OAuth 套餐生成排除证据
+        let plans = snapshot.scope_catalogs.iter().filter(|(scope, _)| {
+            scope.as_str().starts_with("plan:") && scope.as_str() != "plan:unknown"
+        });
+        if !plans
+            .clone()
+            .any(|(_, catalog)| catalog.models.iter().any(|id| id == model))
+        {
+            return BTreeSet::new();
+        }
+        let excluded_scopes = plans
+            .filter(|(_, catalog)| !catalog.models.iter().any(|id| id == model))
+            .map(|(scope, _)| scope)
+            .collect::<BTreeSet<_>>();
+        accounts
+            .iter()
+            .filter(|account| {
+                account.authentication_kind() == super::CODEX_AUTHENTICATION_KIND_OAUTH
+                    && CodexCatalogScope::for_account(account)
+                        .is_ok_and(|scope| excluded_scopes.contains(&scope))
+            })
+            .map(|account| account.id().clone())
+            .collect()
+    }
+
     /// 优先读取套餐目录 cache；缺失时才用当前账号所属套餐的有限候选集实时填充
     pub async fn cached_or_refresh_account_catalog(
         &self,
diff --git a/backend/crates/providers/openai/src/credential/selector.rs b/backend/crates/providers/openai/src/credential/selector.rs
index 5dfd5cfa8..97134e17e 100644
--- a/backend/crates/providers/openai/src/credential/selector.rs
+++ b/backend/crates/providers/openai/src/credential/selector.rs
@@ -17,10 +17,11 @@ use gateway_core::account::{
 use gateway_core::concurrency::{CapacityWait, ConcurrencyWaitQueue, QueueRejection, WaitPriority};
 use gateway_core::engine::{AttemptContext, ContinuationAttempt, policy::AccountPolicyError};
 use gateway_core::provider_ports::{
-    ProviderConcurrencyPool, ProviderLeaseAcquisition, ProviderLeaseGuard, ProviderLeasePort,
-    ProviderLeaseRequest, ProviderSchedulingLeaseRequest, ProviderSessionAffinityKey,
-    ProviderSessionAffinityPort, ProviderSessionBinding, ProviderSessionExclusionPort,
-    ProviderSessionExclusions, ProviderStoreError,
+    ProviderConcurrencyPool, ProviderCooldownPort, ProviderCooldownScope, ProviderLeaseAcquisition,
+    ProviderLeaseGuard, ProviderLeasePort, ProviderLeaseRequest, ProviderSchedulingLeaseRequest,
+    ProviderScopedCooldown, ProviderSessionAffinityKey, ProviderSessionAffinityPort,
+    ProviderSessionBinding, ProviderSessionExclusionPort, ProviderSessionExclusions,
+    ProviderStoreError,
 };
 use gateway_core::routing::ProviderKind;
 use secrecy::ExposeSecret;
@@ -28,6 +29,7 @@ use thiserror::Error;
 use url::Url;
 
 use super::affinity::CodexSessionAffinity;
+use super::catalog::CodexCredentialCatalogService;
 use super::codec::CodexRuntimeAuthentication;
 use super::cookie::CodexCookiePolicy;
 use super::eligibility::CodexSelectionModel;
@@ -52,6 +54,8 @@ const CYBER_POLICY_TIMEOUT: Duration = Duration::from_millis(100);
 const CYBER_POLICY_SESSION_TTL: Duration = Duration::from_secs(60 * 60);
 const MAX_ACCOUNT_SNAPSHOT_RETRIES: u32 = 3;
 const COOLDOWN_READ_CONCURRENCY: usize = 128;
+// 套餐权限可能变化，明确拒绝只作有界的账号模型排除，不冻结整个账号
+const MODEL_UNSUPPORTED_COOLDOWN: Duration = Duration::from_secs(30 * 60);
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub enum CodexAccountFailure {
@@ -135,6 +139,8 @@ pub struct CodexCredentialSelector {
     session_affinity: Arc<dyn ProviderSessionAffinityPort>,
     session_exclusions: Arc<dyn ProviderSessionExclusionPort>,
     quota: Arc<CodexCredentialQuotaService>,
+    catalog: Arc<CodexCredentialCatalogService>,
+    cooldowns: Arc<dyn ProviderCooldownPort>,
     upstream_info: Option<Arc<dyn gateway_core::account::UpstreamInfoSource>>,
     cookie_policy: CodexCookiePolicy,
     risk_recovery: Mutex<HashMap<String, RiskRecoveryState>>,
@@ -273,6 +279,8 @@ impl CodexCredentialSelector {
         session_affinity: Arc<dyn ProviderSessionAffinityPort>,
         session_exclusions: Arc<dyn ProviderSessionExclusionPort>,
         quota: Arc<CodexCredentialQuotaService>,
+        catalog: Arc<CodexCredentialCatalogService>,
+        cooldowns: Arc<dyn ProviderCooldownPort>,
         account_feedback: Arc<AccountFeedbackStats>,
         cookie_policy: CodexCookiePolicy,
     ) -> Self {
@@ -283,6 +291,8 @@ impl CodexCredentialSelector {
             session_affinity,
             session_exclusions,
             quota,
+            catalog,
+            cooldowns,
             upstream_info: None,
             cookie_policy,
             risk_recovery: Mutex::new(HashMap::new()),
@@ -619,6 +629,14 @@ impl CodexCredentialSelector {
                 })
                 .collect::<Vec<_>>();
             let mut eligible = Vec::with_capacity(accounts.len());
+            let catalog_excluded = match model {
+                CodexSelectionModel::Requested(model) if !diagnostic => self
+                    .catalog
+                    .scheduling_exclusions(&accounts, model, SystemTime::now()),
+                _ => Default::default(),
+            };
+            let mut catalog_rejected = 0_usize;
+            let mut native_accounts = std::collections::BTreeSet::new();
             for account in accounts {
                 let adapter = if let Some(model) = adapter_model.as_ref() {
                     match request.attempt.upstream_adapter_for_account(
@@ -638,6 +656,14 @@ impl CodexCredentialSelector {
                 }) {
                     continue;
                 }
+                // 受管适配器拥有其上游模型合同，不套用官方 OAuth 目录与拒绝反馈
+                if adapter.is_none() {
+                    if catalog_excluded.contains(account.id()) {
+                        catalog_rejected += 1;
+                        continue;
+                    }
+                    native_accounts.insert(account.id().clone());
+                }
                 if request.requires_websocket
                     && adapter.is_none()
                     && pinned_account.as_ref().is_none_or(|id| id == account.id())
@@ -667,6 +693,12 @@ impl CodexCredentialSelector {
                 eligible.push(account);
             }
             let accounts = eligible;
+            if catalog_rejected > 0 && request.attempt.trace().is_enabled() {
+                request.attempt.trace().record(
+                    "account.model_catalog",
+                    serde_json::json!({"rejectedCount": catalog_rejected}),
+                );
+            }
             if model_access_rejected > 0 && request.attempt.trace().is_enabled() {
                 request.attempt.trace().record(
                     "account.model_access",
@@ -677,13 +709,48 @@ impl CodexCredentialSelector {
                 self.quota.prepare_scheduling(&accounts).await;
             }
             let mut rate_limits = HashMap::with_capacity(accounts.len());
+            let model_scope = match model {
+                CodexSelectionModel::Requested(model) => {
+                    gateway_core::routing::UpstreamModelId::new(model)
+                        .ok()
+                        .map(ProviderCooldownScope::upstream_model)
+                }
+                _ => None,
+            };
             if !diagnostic {
                 // 同一批候选并发读取实时冷却，避免逐账号累加 Redis 往返
                 // 分批限制在途读取，取消选号时直接释放本批 future，不启动后续批次
                 for batch in accounts.chunks(COOLDOWN_READ_CONCURRENCY) {
                     rate_limits.extend(
                         futures::future::join_all(batch.iter().map(|account| async {
-                            let until = self.quota.cooldown(account.id()).await.unwrap_or(None);
+                            let account_cooldown = self.quota.cooldown(account.id());
+                            let model_cooldown = async {
+                                let scope = model_scope.as_ref()?;
+                                if !native_accounts.contains(account.id()) {
+                                    return None;
+                                }
+                                self.cooldowns
+                                    .read_scoped(account.id(), scope)
+                                    .await
+                                    .ok()
+                                    .flatten()
+                                    .filter(|cooldown| {
+                                        cooldown.credential_revision() == account.revision()
+                                            && cooldown.until() > SystemTime::now()
+                                    })
+                            };
+                            let (account_cooldown, model_cooldown) =
+                                futures::join!(account_cooldown, model_cooldown);
+                            // 保留账号保护的探测语义，同时覆盖两种冷却中较晚的到期时间
+                            let mut until = account_cooldown.unwrap_or(None);
+                            if let Some(model_cooldown) = model_cooldown {
+                                let cooldown =
+                                    until.get_or_insert(gateway_core::account::AccountCooldown {
+                                        until: model_cooldown.until(),
+                                        kind: gateway_core::account::AccountCooldownKind::RateLimit,
+                                    });
+                                cooldown.until = cooldown.until.max(model_cooldown.until());
+                            }
                             (account.id().clone(), until)
                         }))
                         .await,
@@ -1096,6 +1163,23 @@ impl CodexCredentialSelector {
         }
     }
 
+    pub(crate) async fn record_model_unsupported(
+        &self,
+        account: &ProviderAccount,
+        model: &gateway_core::routing::UpstreamModelId,
+    ) -> Result<(), ProviderStoreError> {
+        let now = SystemTime::now();
+        self.cooldowns
+            .put_scoped_if_later(ProviderScopedCooldown::new(
+                account.id().clone(),
+                account.revision(),
+                ProviderCooldownScope::upstream_model(model.clone()),
+                now.checked_add(MODEL_UNSUPPORTED_COOLDOWN).unwrap_or(now),
+            ))
+            .await?;
+        Ok(())
+    }
+
     pub(crate) async fn remember_turn(
         &self,
         turn: &ProviderSessionAffinityKey,
diff --git a/backend/crates/providers/openai/src/lib.rs b/backend/crates/providers/openai/src/lib.rs
index a5bb19f65..c2678a392 100644
--- a/backend/crates/providers/openai/src/lib.rs
+++ b/backend/crates/providers/openai/src/lib.rs
@@ -175,6 +175,8 @@ pub async fn initialize(
             session_affinity,
             session_exclusions,
             Arc::clone(&quota),
+            Arc::clone(&catalog),
+            ports.cooldowns(),
             Arc::clone(&account_feedback),
             CodexCookiePolicy::official().map_err(|_| OpenAiInitializeError::CookiePolicy)?,
         )
diff --git a/backend/crates/providers/openai/src/provider/execution.rs b/backend/crates/providers/openai/src/provider/execution.rs
index d495fe751..8c1750bcb 100644
--- a/backend/crates/providers/openai/src/provider/execution.rs
+++ b/backend/crates/providers/openai/src/provider/execution.rs
@@ -629,6 +629,7 @@ pub(super) fn cold_json_response_stream(request: ColdJsonResponse) -> EventStrea
             response_origin: &request.response_origin,
             cyber_policy_scope: None,
             allows_account_state_mutation,
+            upstream_model: None,
         };
         let active_account = request.lease.account().clone();
         let cookie_header = build_cookie_header(request.lease.cookies())?;
@@ -797,6 +798,7 @@ pub(super) fn cold_response_stream(response: ColdResponse) -> EventStream {
             response_origin: &response_origin,
             cyber_policy_scope: cyber_policy_scope.as_ref(),
             allows_account_state_mutation,
+            upstream_model: Some(&upstream_model),
         };
         let mut active_account = lease.account().clone();
         let cookie_header = build_cookie_header(lease.cookies())?;
diff --git a/backend/crates/providers/openai/src/provider/failure.rs b/backend/crates/providers/openai/src/provider/failure.rs
index 7677eeeab..d2500aefc 100644
--- a/backend/crates/providers/openai/src/provider/failure.rs
+++ b/backend/crates/providers/openai/src/provider/failure.rs
@@ -46,6 +46,7 @@ pub(super) struct MappedProviderFailure {
     /// 原始上游错误描述，仅在凭据错误状态下持久化
     pub(super) error_message: Option<String>,
     pub(super) cyber_policy_failure: bool,
+    pub(super) model_unsupported: bool,
     pub(super) set_cookie_headers: Vec<String>,
     pub(super) response_origin: Option<Url>,
     pub(super) rate_limit_headers: Vec<(String, String)>,
@@ -61,6 +62,7 @@ impl MappedProviderFailure {
             account_failure: None,
             error_message: None,
             cyber_policy_failure: false,
+            model_unsupported: false,
             set_cookie_headers: Vec::new(),
             response_origin: None,
             rate_limit_headers: Vec::new(),
@@ -159,6 +161,7 @@ pub(super) struct OpenAiFailureContext<'a> {
     pub(super) response_origin: &'a Url,
     pub(super) cyber_policy_scope: Option<&'a CodexCyberPolicyScope>,
     pub(super) allows_account_state_mutation: bool,
+    pub(super) upstream_model: Option<&'a UpstreamModelId>,
 }
 
 #[derive(Clone, Copy)]
@@ -308,6 +311,16 @@ pub(super) async fn apply_failure(
         return;
     }
     synchronize_passive_quota_headers(context.quota, account, &failure.rate_limit_headers).await;
+    if failure.model_unsupported
+        && let Some(model) = context.upstream_model
+        && let Err(error) = context
+            .selector
+            .record_model_unsupported(account, model)
+            .await
+    {
+        tracing::warn!(account_id = %account.id(), error = %error,
+            "Failed to persist OpenAI model availability cooldown");
+    }
     let needs_authoritative_quota_refresh = matches!(
         failure.account_failure,
         Some(CodexAccountFailure::QuotaExhausted | CodexAccountFailure::UsageLimitExhausted { .. })
@@ -473,12 +486,13 @@ pub(super) fn apply_websocket_recovery_policy(
         return;
     }
     // 明确账号拒绝走已有换号路径，业务瞬态失败走请求内退避，不消耗 WS 传输预算
-    if failure.error.replay_is_safe()
-        && (failure.account_failure.is_some()
-            || matches!(
-                failure.error.pre_delivery_retry(),
-                Some(gateway_core::error::PreDeliveryRetry::SameAccountTransientRetry { .. })
-            ))
+    if failure.model_unsupported
+        || (failure.error.replay_is_safe()
+            && (failure.account_failure.is_some()
+                || matches!(
+                    failure.error.pre_delivery_retry(),
+                    Some(gateway_core::error::PreDeliveryRetry::SameAccountTransientRetry { .. })
+                )))
     {
         tracing::warn!(
             request_id = context.request_id,
@@ -1490,6 +1504,7 @@ pub(super) fn map_upstream_failure(
         ),
         error_message: failure.client_message,
         cyber_policy_failure,
+        model_unsupported: category == CodexFailureCategory::ModelUnsupported,
         // 普通 5xx 与未知流内错误不足以证明容量拒绝，不能用于冻结账号
         set_cookie_headers: failure.set_cookie_headers,
         response_origin: failure.response_origin,
diff --git a/backend/crates/providers/openai/src/provider/live.rs b/backend/crates/providers/openai/src/provider/live.rs
index 6df1afd13..a36e6ed95 100644
--- a/backend/crates/providers/openai/src/provider/live.rs
+++ b/backend/crates/providers/openai/src/provider/live.rs
@@ -423,6 +423,7 @@ fn cold_live_call_stream(request: ColdLiveCall) -> EventStream {
             response_origin: &request.response_origin,
             cyber_policy_scope: None,
             allows_account_state_mutation,
+            upstream_model: None,
         };
         let active_account = request.lease.account().clone();
         let authorization = request
diff --git a/backend/crates/providers/openai/tests/credential/contract/cooldown_reads.rs b/backend/crates/providers/openai/tests/credential/contract/cooldown_reads.rs
index 7bdf2318c..592ab314e 100644
--- a/backend/crates/providers/openai/tests/credential/contract/cooldown_reads.rs
+++ b/backend/crates/providers/openai/tests/credential/contract/cooldown_reads.rs
@@ -3,8 +3,10 @@
 use std::sync::atomic::{AtomicUsize, Ordering};
 
 use gateway_core::provider_ports::{
-    ProviderCooldown, ProviderCooldownKind, ProviderStoreError, ProviderStoreErrorKind,
+    ProviderCooldown, ProviderCooldownKind, ProviderCooldownScope, ProviderScopedCooldown,
+    ProviderStoreError, ProviderStoreErrorKind,
 };
+use gateway_core::routing::UpstreamModelId;
 use tokio::sync::Notify;
 
 use super::*;
@@ -68,19 +70,26 @@ fn pool_attempt(store: &Arc<MemoryAccountStore>, count: usize) -> AttemptContext
 
 #[tokio::test(start_paused = true)]
 async fn selector_overlaps_cooldown_reads_with_bounded_in_flight_work() {
-    for count in [10_usize, 100, 1000] {
+    for count in [10_usize, 100, 1000, 3000] {
         let store = Arc::new(MemoryAccountStore::default());
         let attempt = pool_attempt(&store, count);
         let activity = Arc::new(ReadActivity::default());
         let observed = activity.clone();
-        let cooldowns = Arc::new(MemoryCooldownPort::new().with_read_hook(Arc::new(move |_| {
-            let activity = observed.clone();
-            Box::pin(async move {
-                let _read = ActiveRead::begin(activity);
-                tokio::time::sleep(Duration::from_millis(10)).await;
-                Ok(())
-            })
-        })));
+        let read_hook = Arc::new(
+            move |_| -> futures::future::BoxFuture<'static, Result<(), ProviderStoreError>> {
+                let activity = observed.clone();
+                Box::pin(async move {
+                    let _read = ActiveRead::begin(activity);
+                    tokio::time::sleep(Duration::from_millis(10)).await;
+                    Ok(())
+                })
+            },
+        );
+        let cooldowns = Arc::new(
+            MemoryCooldownPort::new()
+                .with_read_hook(read_hook.clone())
+                .with_scoped_read_hook(read_hook),
+        );
         let selector = selector_with_runtime(
             &store,
             Arc::new(TestLeaseCoordinator::default()),
@@ -101,9 +110,9 @@ async fn selector_overlaps_cooldown_reads_with_bounded_in_flight_work() {
             .expect("available account");
         let elapsed = started.elapsed();
         assert!(selected.account_id().as_str().starts_with("acct_"));
-        assert_eq!(activity.started.load(Ordering::SeqCst), count);
+        assert_eq!(activity.started.load(Ordering::SeqCst), count * 2);
         assert_eq!(activity.active.load(Ordering::SeqCst), 0);
-        assert_eq!(activity.peak.load(Ordering::SeqCst), count.min(128));
+        assert_eq!(activity.peak.load(Ordering::SeqCst), count.min(128) * 2);
         // 使用虚拟时间证明等待被合并，不把 CI 的 CPU 调度抖动当成性能回归
         assert!(elapsed <= Duration::from_millis(20 * count.div_ceil(128) as u64));
         println!(
@@ -253,3 +262,63 @@ async fn concurrent_reads_preserve_cooldown_expiry_probe_freeze_and_error_fallba
         );
     }
 }
+
+#[tokio::test]
+async fn shorter_account_cooldown_cannot_unmask_an_active_model_cooldown_during_selection() {
+    let store = Arc::new(MemoryAccountStore::default());
+    create_account(&store, "acct_first", "test-first");
+    create_account(&store, "acct_second", "test-second");
+    store.set_scheduling("acct_first", None, AccountWeight::new(100).unwrap());
+    let account = store.account("acct_first").unwrap();
+    let cooldowns = MemoryCooldownPort::new();
+    let account_cooldowns = cooldowns.cooldowns.clone();
+    let revision = account.revision();
+    let cooldowns = Arc::new(cooldowns.with_read_hook(Arc::new(move |id| {
+        let account_cooldowns = account_cooldowns.clone();
+        Box::pin(async move {
+            if id.as_str() == "acct_first" {
+                account_cooldowns.lock().unwrap().insert(
+                    id.clone(),
+                    ProviderCooldown::new(
+                        id,
+                        revision,
+                        SystemTime::now() + Duration::from_millis(100),
+                    ),
+                );
+            } else {
+                // 后续候选的读取跨过账号冷却期限，模型冷却仍必须阻止高权重账号
+                tokio::time::sleep(Duration::from_millis(200)).await;
+            }
+            Ok(())
+        })
+    })));
+    cooldowns
+        .put_scoped_if_later(ProviderScopedCooldown::new(
+            account.id().clone(),
+            revision,
+            ProviderCooldownScope::upstream_model(UpstreamModelId::new("gpt-5.4").unwrap()),
+            SystemTime::now() + Duration::from_secs(60),
+        ))
+        .await
+        .unwrap();
+    let selector = selector_with_runtime(
+        &store,
+        Arc::new(TestLeaseCoordinator::default()),
+        Arc::new(MemorySessionAffinity::default()),
+        Arc::new(AccountFeedbackStats::default()),
+        cooldowns.clone(),
+    );
+    let request_url = Url::parse(OFFICIAL_CODEX_BASE_URL).unwrap();
+    let attempt = attempt(BTreeSet::new());
+    let selected = selector
+        .select(&SelectCodexCredential {
+            upstream_model: "gpt-5.4",
+            request_url: &request_url,
+            attempt: &attempt,
+            session_affinity_key: None,
+        })
+        .await
+        .unwrap();
+    assert!(cooldowns.cooldowns.lock().unwrap()[account.id()].until() < SystemTime::now());
+    assert_eq!(selected.account_id().as_str(), "acct_second");
+}
diff --git a/backend/crates/providers/openai/tests/credential/contract/mod.rs b/backend/crates/providers/openai/tests/credential/contract/mod.rs
index e0adae6e8..3684a65e2 100644
--- a/backend/crates/providers/openai/tests/credential/contract/mod.rs
+++ b/backend/crates/providers/openai/tests/credential/contract/mod.rs
@@ -230,12 +230,21 @@ fn selector_with_runtime(
         verified_at: chrono::Utc::now(),
     });
     let http = reqwest::Client::builder().build().expect("HTTP client");
+    let catalog = Arc::new(
+        provider_openai::credential::CodexCredentialCatalogService::new(
+            store.repository(),
+            profile.clone(),
+            http.clone(),
+            OFFICIAL_CODEX_BASE_URL.to_owned(),
+            crate::support::catalog_cache(),
+        ),
+    );
     let quota = Arc::new(CodexCredentialQuotaService::new(
         store.repository(),
         profile,
         http,
         OFFICIAL_CODEX_BASE_URL.to_owned(),
-        cooldowns,
+        cooldowns.clone(),
         crate::support::runtime_policy(),
     ));
     CodexCredentialSelector::new(
@@ -245,6 +254,8 @@ fn selector_with_runtime(
         session_affinity,
         Arc::new(MemorySessionExclusions::default()),
         quota,
+        catalog,
+        cooldowns,
         account_feedback,
         CodexCookiePolicy::official().expect("official cookie policy"),
     )
diff --git a/backend/crates/providers/openai/tests/provider/contract/cookies.rs b/backend/crates/providers/openai/tests/provider/contract/cookies.rs
index 6c4929017..33c74f08f 100644
--- a/backend/crates/providers/openai/tests/provider/contract/cookies.rs
+++ b/backend/crates/providers/openai/tests/provider/contract/cookies.rs
@@ -6,6 +6,7 @@ fn cookie_provider(store: &Arc<MemoryAccountStore>, base_url: String) -> Arc<Cod
     let profile = wire_profile();
     let http = reqwest::Client::builder().no_proxy().build().unwrap();
     let leases = Arc::new(TestLeaseCoordinator::default());
+    let cooldowns = Arc::new(MemoryCooldownPort::new());
     let catalog = Arc::new(CodexCredentialCatalogService::new(
         store.repository(),
         profile.clone(),
@@ -18,7 +19,7 @@ fn cookie_provider(store: &Arc<MemoryAccountStore>, base_url: String) -> Arc<Cod
         profile.clone(),
         http.clone(),
         base_url.clone(),
-        Arc::new(MemoryCooldownPort::new()),
+        cooldowns.clone(),
         crate::support::runtime_policy(),
     ));
     let feedback = Arc::new(AccountFeedbackStats::default());
@@ -29,6 +30,8 @@ fn cookie_provider(store: &Arc<MemoryAccountStore>, base_url: String) -> Arc<Cod
         Arc::new(MemorySessionAffinity::default()),
         Arc::new(MemorySessionExclusions::default()),
         Arc::clone(&quota),
+        Arc::clone(&catalog),
+        cooldowns,
         Arc::clone(&feedback),
         // 测试仅允许本机模拟上游，生产 Cookie 白名单不放宽
         CodexCookiePolicy::new(["cf_clearance"], ["127.0.0.1"]).unwrap(),
diff --git a/backend/crates/providers/openai/tests/provider/contract/mod.rs b/backend/crates/providers/openai/tests/provider/contract/mod.rs
index 05ace0db9..4edfcbcc4 100644
--- a/backend/crates/providers/openai/tests/provider/contract/mod.rs
+++ b/backend/crates/providers/openai/tests/provider/contract/mod.rs
@@ -1245,7 +1245,7 @@ fn provider_and_quota_with_runtime_ports(
         profile.clone(),
         http.clone(),
         base_url.clone(),
-        cooldowns,
+        cooldowns.clone(),
         policy,
     ));
     let account_feedback = Arc::new(AccountFeedbackStats::default());
@@ -1256,6 +1256,8 @@ fn provider_and_quota_with_runtime_ports(
         session_affinity,
         Arc::new(MemorySessionExclusions::default()),
         Arc::clone(&quota),
+        Arc::clone(&catalog),
+        cooldowns,
         Arc::clone(&account_feedback),
         CodexCookiePolicy::official().expect("cookie policy"),
     ));
diff --git a/backend/crates/providers/openai/tests/provider/contract/model_account_eligibility.rs b/backend/crates/providers/openai/tests/provider/contract/model_account_eligibility.rs
index 05278b04f..fc5d20b14 100644
--- a/backend/crates/providers/openai/tests/provider/contract/model_account_eligibility.rs
+++ b/backend/crates/providers/openai/tests/provider/contract/model_account_eligibility.rs
@@ -1,4 +1,4 @@
-//! Grok 的 ChatGPT OAuth 选号边界与 API Key 未知模型透传合同
+//! 验证模型目录、上游拒绝反馈与未知模型的账号选号边界
 
 use super::*;
 
@@ -139,3 +139,235 @@ async fn unlisted_models_remain_available_without_catalog_discovery() {
         );
     }
 }
+
+#[tokio::test]
+async fn known_oauth_models_filter_plan_candidates_before_weight_and_keep_unknown_models() {
+    let server = MockServer::start().await;
+    let store = Arc::new(MemoryAccountStore::default());
+    create_account(&store, "acct_provider_contract").await;
+    let mut free = profile("chatgpt-acct_scope_new");
+    free.plan_type = Some("free".to_owned());
+    store
+        .seed_oauth_credential(ImportCodexOAuthCredential {
+            account_id: "acct_scope_new".to_owned(),
+            name: "free".to_owned(),
+            secret: secret("test-free"),
+            verified_account: free,
+            next_refresh_at: Some(Utc::now() + chrono::Duration::minutes(30)),
+            enabled: true,
+        })
+        .await;
+    store.set_scheduling("acct_scope_new", None, AccountWeight::new(100).unwrap());
+    for (id, models) in [
+        (
+            "acct_scope_new",
+            json!([{"slug":"gpt-6-luna","display_name":"Luna"}]),
+        ),
+        (
+            "acct_provider_contract",
+            json!([{"slug":"gpt-6-luna","display_name":"Luna"},{"slug":"gpt-6-astra","display_name":"Astra"}]),
+        ),
+    ] {
+        Mock::given(method("GET"))
+            .and(path("/codex/models"))
+            .and(header("chatgpt-account-id", format!("chatgpt-{id}")))
+            .respond_with(ResponseTemplate::new(200).set_body_json(json!({"models":models})))
+            .expect(1)
+            .mount(&server)
+            .await;
+    }
+    Mock::given(method("POST"))
+        .and(path("/codex/responses"))
+        .respond_with(
+            ResponseTemplate::new(200).set_body_raw(CAPTURE_COMPLETED_SSE, "text/event-stream"),
+        )
+        .expect(3)
+        .mount(&server)
+        .await;
+    let affinity = Arc::new(MemorySessionAffinity::default());
+    let provider = provider_with_affinity_and_base_url(&store, affinity.clone(), server.uri());
+    provider.query_model_capabilities().await.unwrap();
+    for (model, expected) in [
+        ("gpt-6-luna", "acct_scope_new"),
+        ("gpt-6-astra", "acct_provider_contract"),
+        ("custom-unlisted", "acct_scope_new"),
+    ] {
+        let request_operation = if model == "custom-unlisted" {
+            operation(model)
+        } else {
+            Operation::Generate(GenerateRequest::from_protocol_payload(
+                ProtocolPayload::json_object(
+                    "openai",
+                    json!({
+                        "model": model, "input": "hello",
+                        "client_metadata": {"x-codex-turn-metadata": json!({
+                            "session_id":"model-session", "thread_id":"model-session"
+                        }).to_string()}
+                    })
+                    .as_object()
+                    .unwrap()
+                    .clone(),
+                )
+                .unwrap()
+                .with_context(Map::from_iter([("use_websocket".to_owned(), json!(false))])),
+            ))
+        };
+        let mut stream = provider
+            .clone()
+            .execute(
+                planned_request_for_model("openai", request_operation, model),
+                context("req_plan_model", CancellationToken::new()),
+            )
+            .await
+            .unwrap();
+        assert_eq!(
+            stream.metadata().provider_account_id().as_str(),
+            expected,
+            "{model}"
+        );
+        while let Some(event) = stream.next().await {
+            event.unwrap();
+        }
+    }
+    assert_eq!(affinity.binding_count(), 1);
+    let pinned = AttemptContext::new(
+        RequestAttemptContext::new(
+            ModelRequestId::new("req_catalog_pin").unwrap(),
+            ClientApiKeyId::new("key_openai_contract").unwrap(),
+        ),
+        NonZeroU32::MIN,
+        SystemTime::now() + Duration::from_secs(30),
+        account_policy(),
+        AccountAttemptContext::new(
+            BTreeSet::new(),
+            Some(ProviderAccountId::new("acct_scope_new").unwrap()),
+            None,
+        )
+        .with_account_scope(contract_account_scope()),
+        None,
+        CancellationToken::new(),
+    );
+    let error = provider
+        .execute(
+            planned_request_for_model("openai", operation("gpt-6-astra"), "gpt-6-astra"),
+            pinned,
+        )
+        .await
+        .err()
+        .expect("a fixed account cannot escape model eligibility");
+    assert_eq!(error.kind(), ProviderErrorKind::NoEligibleAccount);
+}
+
+#[tokio::test]
+async fn upstream_model_rejection_cools_only_that_model_across_requests_and_transports() {
+    use gateway_core::provider_ports::{ProviderCooldownScope, ProviderScopedCooldown};
+
+    for websocket in [false, true] {
+        let server = MockServer::start().await;
+        let store = Arc::new(MemoryAccountStore::default());
+        create_account(&store, "acct_provider_contract").await;
+        let cooldowns = Arc::new(MemoryCooldownPort::new());
+        let (provider, pool) = provider_with_cooldowns(&store, server.uri(), cooldowns.clone());
+        Mock::given(method(if websocket { "GET" } else { "POST" }))
+            .and(path("/codex/responses"))
+            .respond_with(ResponseTemplate::new(400).set_body_json(json!({"error":{
+                "code":"model_not_found", "type":"invalid_request_error",
+                "message":"The 'gpt-6-astra' model is not supported when using Codex with a ChatGPT account."
+            }}))).mount(&server).await;
+        let request_operation = if websocket {
+            let payload = ProtocolPayload::json_object(
+                "openai",
+                Map::from_iter([
+                    ("model".to_owned(), json!("gpt-6-astra")),
+                    ("input".to_owned(), json!("hello")),
+                ]),
+            )
+            .unwrap();
+            Operation::Generate(GenerateRequest::from_protocol_payload(payload))
+        } else {
+            operation("gpt-6-astra")
+        };
+        let mut stream = provider
+            .clone()
+            .execute(
+                planned_request_for_model("openai", request_operation, "gpt-6-astra"),
+                context("req_model_rejected", CancellationToken::new()),
+            )
+            .await
+            .unwrap();
+        let error = loop {
+            match stream.next().await {
+                Some(Err(error)) => break error,
+                Some(Ok(_)) => {}
+                None => panic!("expected model rejection"),
+            }
+        };
+        assert_eq!(error.kind(), ProviderErrorKind::Unsupported);
+        assert!(error.replay_is_safe());
+        drop(stream);
+        let blocked = provider
+            .clone()
+            .execute(
+                planned_request_for_model("openai", operation("gpt-6-astra"), "gpt-6-astra"),
+                context("req_model_cooled", CancellationToken::new()),
+            )
+            .await
+            .err()
+            .expect("model cooldown must survive the first request");
+        assert_eq!(blocked.kind(), ProviderErrorKind::NoEligibleAccount);
+        assert!(cooldowns.cooldowns.lock().unwrap().is_empty());
+        server.reset().await;
+        Mock::given(method("POST"))
+            .and(path("/codex/responses"))
+            .respond_with(
+                ResponseTemplate::new(200).set_body_raw(CAPTURE_COMPLETED_SSE, "text/event-stream"),
+            )
+            .expect(2)
+            .mount(&server)
+            .await;
+        let mut other = provider
+            .clone()
+            .execute(
+                planned_request_for_model("openai", operation("gpt-6-luna"), "gpt-6-luna"),
+                context("req_other_model", CancellationToken::new()),
+            )
+            .await
+            .unwrap();
+        while let Some(event) = other.next().await {
+            event.unwrap();
+        }
+        let account = store.account("acct_provider_contract").unwrap();
+        let scope =
+            ProviderCooldownScope::upstream_model(UpstreamModelId::new("gpt-6-astra").unwrap());
+        let key = (account.id().clone(), scope.clone());
+        {
+            let mut scoped = cooldowns.scoped.lock().unwrap();
+            let until = scoped[&key].until();
+            assert!(
+                (Duration::from_secs(29 * 60)..=Duration::from_secs(30 * 60))
+                    .contains(&until.duration_since(SystemTime::now()).unwrap())
+            );
+            scoped.insert(
+                key,
+                ProviderScopedCooldown::new(
+                    account.id().clone(),
+                    account.revision(),
+                    scope,
+                    SystemTime::now() - Duration::from_secs(1),
+                ),
+            );
+        }
+        let mut recovered = provider
+            .clone()
+            .execute(
+                planned_request_for_model("openai", operation("gpt-6-astra"), "gpt-6-astra"),
+                context("req_model_recovered", CancellationToken::new()),
+            )
+            .await
+            .unwrap();
+        while let Some(event) = recovered.next().await {
+            event.unwrap();
+        }
+        pool.shutdown().await;
+    }
+}
diff --git a/backend/crates/providers/openai/tests/support.rs b/backend/crates/providers/openai/tests/support.rs
index 078236cbd..b9fb02062 100644
--- a/backend/crates/providers/openai/tests/support.rs
+++ b/backend/crates/providers/openai/tests/support.rs
@@ -1187,13 +1187,14 @@ pub(crate) fn account_policy() -> gateway_core::account::AccountSelectionPolicy
 type CooldownReadHook =
     dyn Fn(ProviderAccountId) -> BoxFuture<'static, Result<(), ProviderStoreError>> + Send + Sync;
 
-/// 内存 `ProviderCooldownPort`：实现 `read`/`put_if_later` 与容量失败计数
-/// 证据（openai selector 429 冷却与容量熔断路径用），scope 变体测试不涉及，
-/// 返回占位
+/// 内存账号与模型冷却端口，保留版本和到期时间供选号行为测试
 #[derive(Clone, Default)]
 pub(crate) struct MemoryCooldownPort {
     pub(crate) cooldowns: Arc<Mutex<BTreeMap<ProviderAccountId, ProviderCooldown>>>,
+    pub(crate) scoped:
+        Arc<Mutex<BTreeMap<(ProviderAccountId, ProviderCooldownScope), ProviderScopedCooldown>>>,
     before_read: Option<Arc<CooldownReadHook>>,
+    before_scoped_read: Option<Arc<CooldownReadHook>>,
 }
 
 impl MemoryCooldownPort {
@@ -1206,6 +1207,11 @@ impl MemoryCooldownPort {
         self.before_read = Some(hook);
         self
     }
+
+    pub(crate) fn with_scoped_read_hook(mut self, hook: Arc<CooldownReadHook>) -> Self {
+        self.before_scoped_read = Some(hook);
+        self
+    }
 }
 
 impl ProviderCooldownPort for MemoryCooldownPort {
@@ -1254,17 +1260,39 @@ impl ProviderCooldownPort for MemoryCooldownPort {
 
     fn put_scoped_if_later(
         &self,
-        _cooldown: ProviderScopedCooldown,
+        cooldown: ProviderScopedCooldown,
     ) -> BoxFuture<'_, Result<bool, ProviderStoreError>> {
-        Box::pin(async { Ok(false) })
+        Box::pin(async move {
+            let mut scoped = self.scoped.lock().unwrap();
+            let key = (cooldown.account_id().clone(), cooldown.scope().clone());
+            let should_write = scoped.get(&key).is_none_or(|current| {
+                current.credential_revision() < cooldown.credential_revision()
+                    || (current.credential_revision() == cooldown.credential_revision()
+                        && current.until() < cooldown.until())
+            });
+            if should_write {
+                scoped.insert(key, cooldown);
+            }
+            Ok(should_write)
+        })
     }
 
     fn read_scoped<'a>(
         &'a self,
-        _account_id: &'a ProviderAccountId,
-        _scope: &'a ProviderCooldownScope,
+        account_id: &'a ProviderAccountId,
+        scope: &'a ProviderCooldownScope,
     ) -> BoxFuture<'a, Result<Option<ProviderScopedCooldown>, ProviderStoreError>> {
-        Box::pin(async { Ok(None) })
+        Box::pin(async move {
+            if let Some(hook) = &self.before_scoped_read {
+                hook(account_id.clone()).await?;
+            }
+            Ok(self
+                .scoped
+                .lock()
+                .unwrap()
+                .get(&(account_id.clone(), scope.clone()))
+                .cloned())
+        })
     }
 
     fn clear_scoped<'a>(
diff --git a/docs/api.md b/docs/api.md
index 2297b0324..7622ff1ff 100644
--- a/docs/api.md
+++ b/docs/api.md
@@ -551,7 +551,7 @@ xAI 没有 Codex 原生目录，使用官方 CLI proxy 当前目录生成通用
 已知模型只路由到明确提供该模型的 Provider，账号不可用时不转发给其他平台的未知模型通道。
 未知模型只在当前范围与路由约束下存在唯一 Provider 透传候选时发送；无法确定归属时返回不可用错误，
 可通过 Client Key 分组限定目标平台。一个 Provider 内的多个 API Key 账号仍按账号模型政策与调度规则选择，
-不要求模型已被上游目录收录；ChatGPT OAuth 账号不接受 Grok 模型
+不要求模型已被上游目录收录；ChatGPT OAuth 账号不接受 Grok 模型，已知模型按[账号模型限制](#账号模型限制)中的套餐资格筛选
 
 目录账号只能来自本次 Client Key 冻结的账号范围。OpenAI 的 OAuth 目录按账号 ID 排序，使用首个成功读取的
 合格账号，最多尝试三个账号；API Key 目录按账号模型权限过滤后聚合。同名模型优先采用 OAuth 原生对象，
@@ -1172,6 +1172,11 @@ Key 预算及其访问状态随互联默认公开，不要求开启 `shareQuota`
 例如 Plus 设置 `allowlist` 并选中 luna 的实际 ID，Pro 设置 `denylist` 并选中同一 ID，即可严格分流；
 Pro 使用 `all` 时也能参与 luna 调度。套餐名称不自动生成或修改规则
 
+原生 ChatGPT OAuth Responses 会在评分和亲和前检查最近 30 分钟内同步的套餐目录：模型已在已知套餐中出现时，
+不会选中成功读取目录但未包含该模型的套餐账号。未知套餐、目录读取失败或过期、未收录模型仍交由上游验证。
+原生 Responses 上游明确拒绝某个账号使用该模型后，该账号与模型组合冷却 30 分钟；其他模型仍可使用该账号。
+冷却按凭据版本隔离，不修改 `modelAccess`，也不解除原生续写的固定账号约束。受管上游适配器不应用这两项原生限制
+
 单账号更新或批量更新省略 `modelAccess` 时保留原值，显式提交 `{ "mode": "all", "models": [] }` 清除限制。
 批量接口的调度、分组、模型与代理字段均可省略；省略的字段保持各账号原值。
 提供 `groupIds` 时替换完整分组集合，提供 `concurrencyLimit: null` 时恢复继承运行参数
@@ -1181,7 +1186,7 @@ Pro 使用 `all` 时也能参与 luna 调度。套餐名称不自动生成或修
 Images 和 Search 按原始请求正文的模型 ID 检查，不依赖模型目录或全局模型映射；可手动添加目录未列出的模型 ID。
 模型缺失、重复或无法识别时，仅使用模型政策为 `all` 的账号，不推测上游默认模型。
 Search 的选号限制不约束插件在选号后主动改写正文。
-管理员连接测试不受该模型限制；连接测试成功只证明指定账号的上游能力。
+管理员连接测试不受账号模型政策、套餐目录筛选与模型拒绝冷却限制；连接测试成功只证明指定账号的上游能力。
 普通 `/v1/models` 和单模型查询将已发现的 OpenAI 模型关联到来源账号，至少一个来源账号在当前 Key 范围内且政策允许时才展示；
 同 Provider 中未发现该模型的 `all` 账号不会使它进入列表。原生目录保留已有来源选择和完整模型对象
 
diff --git a/docs/architecture.md b/docs/architecture.md
index 7cd29a4f9..1d2956eb7 100644
--- a/docs/architecture.md
+++ b/docs/architecture.md
@@ -323,7 +323,7 @@ Provider 模型能力、目录代次与 `ProviderCatalogPort` 由 `routing::cata
 该只读合同，不反向依赖执行注册表；`ProviderRegistry` 实现目录端口，维护唯一的 Provider
 注册集合。已知空目录与查询失败的未知目录保持不同语义，目录替身无需实现请求执行。
 Provider 可为模型提供来源账号集合；Core 在公开目录查询时结合冻结账号范围与政策过滤来源，
-配置发布复用已缓存的来源事实。来源集合只约束目录展示，不改变发现型目录的推理准入语义
+配置发布复用已缓存的来源事实。来源集合只约束目录展示，不直接作为推理账号白名单；Provider 独占上游资格判断
 
 客户端原生模型目录同样由 Provider 拥有，通过 `ExecutionService` 和现有 Registry 的只读调用传递。
 `routing::catalog` 的原生条目只包含模型 ID 与不透明协议正文，Core 负责冻结账号范围和整对象模型映射，
@@ -507,7 +507,8 @@ credential state 调度，不以是否存在上游用户 ID 推断可用性；OA
 状态恢复和未补齐身份的凭据轮换保留 `unknown`。
 API Key 默认 HTTP/SSE，可选 WS 优先；选号先验证传输资格，WS pool 与 continuation 按凭据版本隔离。
 OAuth 与 API Key 共用业务请求、响应和能力透传链路，差异限定在上游地址、认证、传输配置及明确的上游请求合同适配。
-OpenAI 模型目录用于发现，不因目录缺项拒绝请求；管理员配置的模型权限仍由 Core 与选号链路执行
+OpenAI 模型目录用于发现；原生 OAuth Responses 还使用新鲜套餐目录筛选已知模型的候选账号。
+未知目录、未知套餐或未收录模型保留上游验证；管理员配置的模型权限仍由 Core 与选号链路执行
 
 - OpenAI 是透明边界。正文兼容、身份归一和显式请求策略之外的业务字段保留原始语义；
   业务响应按原始字节转发，客户端错误兼容与原生续写额度恢复按明确例外处理，见 [OpenAI 透传](api.md#openai-透传)。
@@ -733,6 +734,13 @@ OpenAI Provider 在选号时排除 Grok 模型的 ChatGPT OAuth 账号，API Key
 OpenAI Provider 的账号资格模块统一解释请求类型、认证与套餐限制，Images 和 Live 共用 OAuth 套餐检查。
 资格检查复用账号持久事实，在获取租约前与冻结的模型黑白名单共同过滤候选；亲和与重试沿用同一检查
 
+原生 OAuth Responses 在评分、亲和和租约前按映射后的模型筛选套餐候选：目录快照未满 30 分钟，
+且模型已在已知 OAuth 套餐中出现时，排除成功读取目录但未包含该模型的套餐。未知或读取失败的套餐、
+过期快照与未收录模型继续交由上游判断；热路径只读进程缓存，不请求上游目录。
+原生 Responses 明确返回模型不支持时，通过既有模型级冷却端口记录账号、凭据版本与上游模型，30 分钟内不再选用该组合。
+该反馈不冻结整个账号，不改写管理员模型政策，也不占用 WS 传输恢复预算；重试仍遵守交付边界与原生续写固定账号约束。
+管理员诊断旁路这两项限制，受管上游适配器不继承原生目录资格或原生模型拒绝冷却
+
 账号编辑在一个事务中更新调度事实，批量更新只应用显式提供的字段。导入与首次 OAuth 可携带统一账号设置，由 Admin 传递给 Store，
 与凭据在同一事务中提交；Provider 仍独占凭据解析。未附带设置的导入、重新授权和后台刷新保留已有分组、
 权重、并发与模型政策。模型政策变更推进配置 revision，不推进 credential revision。管理端导入和账号编辑共用设置表单，凭据输入独立于设置