diff --git a/src/main/opencode-usage/cache-read-reproduction.test.ts b/src/main/opencode-usage/cache-read-reproduction.test.ts
index 015c2922de4..454da7d8199 100644
--- a/src/main/opencode-usage/cache-read-reproduction.test.ts
+++ b/src/main/opencode-usage/cache-read-reproduction.test.ts
@@ -41,7 +41,7 @@ it('preserves a local cache-heavy session through every usage projection', async
     }
     const { sessions, dailyAggregates } = await parseOpenCodeUsageDatabase(path, () => null)
     const counters = {
-      inputTokens: 13_634_611,
+      inputTokens: 278_041_631,
       outputTokens: 207_892,
       reasoningOutputTokens: 97_467,
       cachedInputTokens: 264_407_020,
diff --git a/src/main/opencode-usage/cache-write-accounting.test.ts b/src/main/opencode-usage/cache-write-accounting.test.ts
new file mode 100644
index 00000000000..883f0cf3f57
--- /dev/null
+++ b/src/main/opencode-usage/cache-write-accounting.test.ts
@@ -0,0 +1,101 @@
+import { mkdtempSync, realpathSync, rmSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { expect, it } from 'vitest'
+import { codexOpenCodeTokenSessions } from '../usage/agent-token-usage'
+import { createUsageWorktreeResolver } from '../usage/usage-worktree-resolver'
+import { getDefaultState, normalizePersistedState } from './persisted-state-normalization'
+import { writeOpenCodeUsageDatabase } from './opencode-usage-sqlite-fixture'
+import { parseOpenCodeUsageDatabase } from './scanner'
+import { parseOpenCodeUsageRow } from './opencode-usage-row-parsing'
+
+it.each([
+  { input: 638, read: 642944, write: 1024, total: 644706 },
+  { input: 0, read: 0, write: 1024, total: 1124 }
+])(
+  'preserves cache writes and uncached input in $total tokens',
+  ({ input, read, write, total }) => {
+    const parsed = parseOpenCodeUsageRow({
+      id: 'cache-write-message',
+      session_id: 'cache-write-session',
+      time_created: 1_777_777_700_000,
+      time_updated: null,
+      directory: null,
+      title: null,
+      worktree: null,
+      session_model: null,
+      data: JSON.stringify({
+        tokens: { input, output: 100, reasoning: 0, total, cache: { read, write } }
+      })
+    })
+    expect(parsed).toMatchObject({
+      inputTokens: input + read + write,
+      cachedInputTokens: read + write,
+      cacheWriteInputTokens: write,
+      outputTokens: 100,
+      totalTokens: total
+    })
+    expect((parsed?.inputTokens ?? 0) - (parsed?.cachedInputTokens ?? 0)).toBe(input)
+  }
+)
+
+it.each(['v1', 'v2-only'] as const)(
+  'preserves separate cache read and write telemetry after %s aggregation and reload',
+  async (generation) => {
+    const directory = realpathSync(mkdtempSync(join(tmpdir(), 'orca-cache-buckets-')))
+    try {
+      const path = join(directory, 'opencode.db')
+      const sessions = [
+        {
+          id: 'cache-session',
+          directory,
+          tokensInput: 638,
+          tokensOutput: 100,
+          tokensCacheRead: 642944,
+          tokensCacheWrite: 1024
+        }
+      ]
+      writeOpenCodeUsageDatabase(path, {
+        generation,
+        legacySessions: sessions,
+        v2Sessions: sessions,
+        worktree: directory
+      })
+      const resolver = await createUsageWorktreeResolver([
+        {
+          repoId: 'repo',
+          worktreeId: 'folder',
+          path: directory,
+          displayName: 'Repo'
+        }
+      ])
+      const database = await parseOpenCodeUsageDatabase(path, resolver)
+      const state = normalizePersistedState({
+        ...getDefaultState(),
+        processedDatabases: [structuredClone(database)],
+        sessions: structuredClone(database.sessions),
+        dailyAggregates: structuredClone(database.dailyAggregates)
+      })
+      expect(state.dailyAggregates[0]).toMatchObject({
+        inputTokens: 644606,
+        cachedInputTokens: 643968,
+        cacheWriteInputTokens: 1024
+      })
+      expect(state.sessions[0]?.modelBreakdown[0]?.cacheWriteInputTokens).toBe(1024)
+      expect(state.sessions[0]?.locationModelBreakdown[0]?.cacheWriteInputTokens).toBe(1024)
+      for (const sessions of [state.sessions, state.processedDatabases[0]?.sessions ?? []]) {
+        expect(codexOpenCodeTokenSessions(sessions)).toEqual([
+          {
+            providerSessionId: 'cache-session',
+            input_tokens: 638,
+            output_tokens: 100,
+            cached_input_tokens: 642944,
+            cache_write_input_tokens: 1024
+          }
+        ])
+      }
+    } finally {
+      rmSync(directory, { recursive: true, force: true })
+    }
+  }
+)
diff --git a/src/main/opencode-usage/opencode-usage-provider.ts b/src/main/opencode-usage/opencode-usage-provider.ts
index 9d91c876028..6e815fb1727 100644
--- a/src/main/opencode-usage/opencode-usage-provider.ts
+++ b/src/main/opencode-usage/opencode-usage-provider.ts
@@ -9,7 +9,8 @@ import type {
 // Why: v4 reads OpenCode 2's `session_v2` table; v3 caches miss every v2 session.
 // v5 merges a migrated session's two rows per column instead of picking one, so
 // v4 caches hold zeroed costs and pre-migration metadata.
-export const OPENCODE_USAGE_SCHEMA_VERSION = 5
+// v6 normalizes input; v7 preserves writes separately for telemetry.
+export const OPENCODE_USAGE_SCHEMA_VERSION = 7
 
 export const openCodeUsageProvider = {
   id: 'opencode',
diff --git a/src/main/opencode-usage/opencode-usage-row-parsing.ts b/src/main/opencode-usage/opencode-usage-row-parsing.ts
index 5f6da050fe3..504a15efd63 100644
--- a/src/main/opencode-usage/opencode-usage-row-parsing.ts
+++ b/src/main/opencode-usage/opencode-usage-row-parsing.ts
@@ -77,14 +77,16 @@ export function parseOpenCodeUsageRow(row: OpenCodeUsageRow): OpenCodeUsageParse
     return null
   }
   const cache = parseJsonObject(tokens.cache)
-  const inputTokens = ensureNumber(tokens.input)
+  const uncachedInputTokens = ensureNumber(tokens.input)
   const outputTokens = ensureNumber(tokens.output)
   const reasoningOutputTokens = ensureNumber(tokens.reasoning)
-  // Cache reads can exceed input; max avoids double-counting when total already includes them.
-  const cachedInputTokens = ensureNumber(cache?.read)
+  // OpenCode reports uncached input separately; Orca includes both cache buckets in input.
+  const cacheWriteInputTokens = ensureNumber(cache?.write)
+  const cachedInputTokens = ensureNumber(cache?.read) + cacheWriteInputTokens
+  const inputTokens = uncachedInputTokens + cachedInputTokens
   const totalTokens = Math.max(
     ensureNumber(tokens.total),
-    inputTokens + outputTokens + reasoningOutputTokens + cachedInputTokens
+    inputTokens + outputTokens + reasoningOutputTokens
   )
 
   if (inputTokens + outputTokens + reasoningOutputTokens + cachedInputTokens + totalTokens <= 0) {
@@ -104,6 +106,7 @@ export function parseOpenCodeUsageRow(row: OpenCodeUsageRow): OpenCodeUsageParse
     estimatedCostUsd: ensureNumber(data.cost) > 0 ? ensureNumber(data.cost) : null,
     inputTokens,
     cachedInputTokens,
+    cacheWriteInputTokens,
     outputTokens,
     reasoningOutputTokens,
     totalTokens
diff --git a/src/main/opencode-usage/opencode2-session-usage.test.ts b/src/main/opencode-usage/opencode2-session-usage.test.ts
index 46e6909274a..12135c9af31 100644
--- a/src/main/opencode-usage/opencode2-session-usage.test.ts
+++ b/src/main/opencode-usage/opencode2-session-usage.test.ts
@@ -81,10 +81,10 @@ describe('OpenCode 2 session_v2 usage', () => {
         cwd: WORKTREE,
         model: 'anthropic/claude-sonnet-4-5',
         estimatedCostUsd: 0.5,
-        inputTokens: 100,
+        inputTokens: 1300,
         outputTokens: 20,
         reasoningOutputTokens: 5,
-        cachedInputTokens: 900,
+        cachedInputTokens: 1200,
         totalTokens: 1325
       })
     ])
@@ -106,8 +106,9 @@ describe('OpenCode 2 session_v2 usage', () => {
     })
 
     const [event] = readEvents(path)
-    expect(event?.cachedInputTokens).toBe(5_000)
-    // Cache writes are not billed as input, so they only reach the total.
+    expect(event?.cachedInputTokens).toBe(7_000)
+    expect(event?.inputTokens).toBe(7_010)
+    // Both cache buckets contribute to input; total counts them once.
     expect(event?.totalTokens).toBe(7_011)
   })
 
@@ -130,7 +131,7 @@ describe('OpenCode 2 session_v2 usage', () => {
 
     const events = readEvents(path)
     expect(events.map((event) => event.sessionId)).toEqual(['ses_shared', 'ses_v2_only'])
-    expect(events[0]?.inputTokens).toBe(180)
+    expect(events[0]?.inputTokens).toBe(240)
     expect(events[0]?.cachedInputTokens).toBe(60)
   })
 
@@ -211,9 +212,9 @@ describe('OpenCode 2 session_v2 usage', () => {
       expect.objectContaining({
         sessionId: 'ses_v1',
         estimatedCostUsd: 1.25,
-        inputTokens: 11,
+        inputTokens: 20,
         outputTokens: 3,
-        cachedInputTokens: 7,
+        cachedInputTokens: 9,
         totalTokens: 23
       })
     ])
@@ -240,7 +241,7 @@ describe('OpenCode 2 session_v2 usage', () => {
     db.close()
 
     expect(readEvents(path)).toEqual([
-      expect.objectContaining({ sessionId: 'ses_msg', inputTokens: 60, cachedInputTokens: 12 })
+      expect.objectContaining({ sessionId: 'ses_msg', inputTokens: 75, cachedInputTokens: 15 })
     ])
   })
 
@@ -373,7 +374,7 @@ describe('OpenCode 2 migrated session column merge', () => {
     const events = readEvents(path)
     expect(events).toHaveLength(1)
     expect(events[0]).toMatchObject({
-      inputTokens: 1000,
+      inputTokens: 2200,
       cachedInputTokens: 1200,
       estimatedCostUsd: 2,
       totalTokens: 2200
@@ -426,9 +427,9 @@ describe('OpenCode 2 migrated session column merge', () => {
         cwd: WORKTREE,
         model: 'anthropic/claude-sonnet-4-5',
         estimatedCostUsd: 1.25,
-        inputTokens: 11,
+        inputTokens: 20,
         outputTokens: 3,
-        cachedInputTokens: 7,
+        cachedInputTokens: 9,
         totalTokens: 23
       })
     ])
diff --git a/src/main/opencode-usage/scanner.test.ts b/src/main/opencode-usage/scanner.test.ts
index 0e5c39eb69a..9ca0d8e73eb 100644
--- a/src/main/opencode-usage/scanner.test.ts
+++ b/src/main/opencode-usage/scanner.test.ts
@@ -127,11 +127,12 @@ describe('parseOpenCodeUsageRow', () => {
       cwd: `${WORKTREE}/packages/app`,
       model: 'anthropic/claude-sonnet-4-5',
       estimatedCostUsd: 0.0123,
-      inputTokens: 1000,
-      cachedInputTokens: 400,
+      inputTokens: 1425,
+      cachedInputTokens: 425,
+      cacheWriteInputTokens: 25,
       outputTokens: 250,
       reasoningOutputTokens: 100,
-      totalTokens: 1750
+      totalTokens: 1775
     })
   })
 
@@ -165,7 +166,7 @@ describe('parseOpenCodeUsageRow', () => {
     })
 
     expect(parsed).toMatchObject({
-      inputTokens: 100,
+      inputTokens: 10_100,
       cachedInputTokens: 10_000,
       outputTokens: 20,
       reasoningOutputTokens: 5,
@@ -246,8 +247,8 @@ describe('parseOpenCodeUsageDatabase', () => {
       primaryModel: 'anthropic/claude-sonnet-4-5',
       primaryProjectLabel: 'Repo',
       eventCount: 1,
-      totalInputTokens: 1000,
-      totalCachedInputTokens: 250,
+      totalInputTokens: 1325,
+      totalCachedInputTokens: 325,
       totalOutputTokens: 500,
       totalReasoningOutputTokens: 100,
       totalTokens: 1925,
@@ -256,8 +257,8 @@ describe('parseOpenCodeUsageDatabase', () => {
     expect(parsed.dailyAggregates).toEqual([
       expect.objectContaining({
         projectLabel: 'Repo',
-        inputTokens: 1000,
-        cachedInputTokens: 250,
+        inputTokens: 1325,
+        cachedInputTokens: 325,
         outputTokens: 500,
         reasoningOutputTokens: 100,
         totalTokens: 1925,
diff --git a/src/main/opencode-usage/scanner.ts b/src/main/opencode-usage/scanner.ts
index 06fd19a6a5e..5cb9eaab883 100644
--- a/src/main/opencode-usage/scanner.ts
+++ b/src/main/opencode-usage/scanner.ts
@@ -32,17 +32,25 @@ function addCost(left: number | null, right: number | null): number | null {
   return (left ?? 0) + (right ?? 0)
 }
 
-type OpenCodeUsageMetric = { estimatedCostUsd: number | null }
+type OpenCodeUsageMetric = {
+  estimatedCostUsd: number | null
+  cacheWriteInputTokens?: number
+}
 
 const openCodeUsageAggregation = createUsageEventAggregation<
   OpenCodeUsageAttributedEvent,
   OpenCodeUsageMetric
 >({
   metric: {
-    empty: () => ({ estimatedCostUsd: null }),
-    fromEvent: (event) => ({ estimatedCostUsd: event.estimatedCostUsd }),
+    empty: () => ({ estimatedCostUsd: null, cacheWriteInputTokens: 0 }),
+    fromEvent: (event) => ({
+      estimatedCostUsd: event.estimatedCostUsd,
+      cacheWriteInputTokens: event.cacheWriteInputTokens ?? 0
+    }),
     fold: (target, source) => {
       target.estimatedCostUsd = addCost(target.estimatedCostUsd, source.estimatedCostUsd)
+      target.cacheWriteInputTokens =
+        (target.cacheWriteInputTokens ?? 0) + (source.cacheWriteInputTokens ?? 0)
     }
   },
   cloneSessionForMerge: (session) => structuredClone(session)
diff --git a/src/main/opencode-usage/types.ts b/src/main/opencode-usage/types.ts
index cf8d2c6a8d0..53a4ea673d5 100644
--- a/src/main/opencode-usage/types.ts
+++ b/src/main/opencode-usage/types.ts
@@ -12,6 +12,7 @@ export type OpenCodeUsageLocationBreakdown = {
   eventCount: number
   inputTokens: number
   cachedInputTokens: number
+  cacheWriteInputTokens?: number
   outputTokens: number
   reasoningOutputTokens: number
   totalTokens: number
@@ -25,6 +26,7 @@ export type OpenCodeUsageModelBreakdown = {
   eventCount: number
   inputTokens: number
   cachedInputTokens: number
+  cacheWriteInputTokens?: number
   outputTokens: number
   reasoningOutputTokens: number
   totalTokens: number
@@ -39,6 +41,7 @@ export type OpenCodeUsageLocationModelBreakdown = {
   eventCount: number
   inputTokens: number
   cachedInputTokens: number
+  cacheWriteInputTokens?: number
   outputTokens: number
   reasoningOutputTokens: number
   totalTokens: number
@@ -58,6 +61,7 @@ export type OpenCodeUsageSession = {
   eventCount: number
   totalInputTokens: number
   totalCachedInputTokens: number
+  cacheWriteInputTokens?: number
   totalOutputTokens: number
   totalReasoningOutputTokens: number
   totalTokens: number
@@ -77,6 +81,7 @@ export type OpenCodeUsageDailyAggregate = {
   eventCount: number
   inputTokens: number
   cachedInputTokens: number
+  cacheWriteInputTokens?: number
   outputTokens: number
   reasoningOutputTokens: number
   totalTokens: number
@@ -117,6 +122,7 @@ export type OpenCodeUsageParsedEvent = {
   estimatedCostUsd: number | null
   inputTokens: number
   cachedInputTokens: number
+  cacheWriteInputTokens?: number
   outputTokens: number
   reasoningOutputTokens: number
   totalTokens: number
diff --git a/src/main/usage/agent-token-usage.ts b/src/main/usage/agent-token-usage.ts
index 36cada6cf01..bc6868d10fc 100644
--- a/src/main/usage/agent-token-usage.ts
+++ b/src/main/usage/agent-token-usage.ts
@@ -40,8 +40,18 @@ export function codexOpenCodeTokenSessions(
           0
         ),
         output_tokens: locations.reduce((sum, entry) => sum + entry.outputTokens, 0),
-        cached_input_tokens: locations.reduce((sum, entry) => sum + entry.cachedInputTokens, 0),
-        cache_write_input_tokens: 0
+        cached_input_tokens: locations.reduce(
+          (sum, entry) =>
+            sum +
+            entry.cachedInputTokens -
+            ('cacheWriteInputTokens' in entry ? (entry.cacheWriteInputTokens ?? 0) : 0),
+          0
+        ),
+        cache_write_input_tokens: locations.reduce(
+          (sum, entry) =>
+            sum + ('cacheWriteInputTokens' in entry ? (entry.cacheWriteInputTokens ?? 0) : 0),
+          0
+        )
       }
     ]
   })
diff --git a/src/renderer/src/components/stats/CodexUsageDailyChart.tsx b/src/renderer/src/components/stats/CodexUsageDailyChart.tsx
index 3ac8b94dadb..6c8be76711d 100644
--- a/src/renderer/src/components/stats/CodexUsageDailyChart.tsx
+++ b/src/renderer/src/components/stats/CodexUsageDailyChart.tsx
@@ -48,7 +48,7 @@ export function CodexUsageDailyChart({ daily }: CodexUsageDailyChartProps): Reac
             {
               key: 'input',
               label: translate('auto.components.stats.CodexUsageDailyChart.99a91d3143', 'Input'),
-              value: entry.inputTokens,
+              value: Math.max(0, entry.inputTokens - entry.cachedInputTokens),
               className: 'bg-sky-500/80'
             },
             {