diff --git a/docs/gateway/configuration-reference.md b/docs/gateway/configuration-reference.md
index 6729e00d9b4..38eb989846e 100644
--- a/docs/gateway/configuration-reference.md
+++ b/docs/gateway/configuration-reference.md
@@ -2690,7 +2690,7 @@ Set `ZAI_API_KEY`. `z.ai/*` and `z-ai/*` are accepted aliases. Shortcut: `opencl
             name: "Kimi K2.6",
             reasoning: false,
             input: ["text", "image"],
-            cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0 },
+            cost: { input: 0.95, output: 4, cacheRead: 0.16, cacheWrite: 0 },
             contextWindow: 262144,
             maxTokens: 262144,
           },
diff --git a/docs/help/testing.md b/docs/help/testing.md
index 9edff0f4165..36770a5d0dc 100644
--- a/docs/help/testing.md
+++ b/docs/help/testing.md
@@ -39,6 +39,11 @@ When debugging real providers/models (requires real creds):
 
 - Live suite (models + gateway tool/image probes): `pnpm test:live`
 - Target one live file quietly: `pnpm test:live -- src/agents/models.profiles.live.test.ts`
+- Moonshot/Kimi cost smoke: with `MOONSHOT_API_KEY` set, run
+  `openclaw models list --provider moonshot --json`, then run an isolated
+  `openclaw agent --local --session-id live-kimi-cost --message 'Reply exactly: KIMI_LIVE_OK' --thinking off --json`
+  against `moonshot/kimi-k2.6`. Verify the JSON reports Moonshot/K2.6 and the
+  assistant transcript stores normalized `usage.cost`.
 
 Tip: when you only need one failing case, prefer narrowing live tests via the allowlist env vars described below.
 
diff --git a/docs/providers/moonshot.md b/docs/providers/moonshot.md
index b46e1e4550d..7b1871f8045 100644
--- a/docs/providers/moonshot.md
+++ b/docs/providers/moonshot.md
@@ -79,6 +79,25 @@ Choose your provider and follow the setup steps.
         openclaw models list --provider moonshot
         ```
       </Step>
+      <Step title="Run a live smoke test">
+        Use an isolated state dir when you want to verify model access and cost
+        tracking without touching your normal sessions:
+
+        ```bash
+        OPENCLAW_CONFIG_PATH=/tmp/openclaw-kimi/openclaw.json \
+        OPENCLAW_STATE_DIR=/tmp/openclaw-kimi \
+        openclaw agent --local \
+          --session-id live-kimi-cost \
+          --message 'Reply exactly: KIMI_LIVE_OK' \
+          --thinking off \
+          --json
+        ```
+
+        The JSON response should report `provider: "moonshot"` and
+        `model: "kimi-k2.6"`. The assistant transcript entry stores normalized
+        token usage plus estimated cost under `usage.cost` when Moonshot returns
+        usage metadata.
+      </Step>
     </Steps>
 
     ### Config example
@@ -335,6 +354,12 @@ Config lives under `plugins.entries.moonshot.config.webSearch`:
     shared `openai-completions` transport. OpenClaw keys that off endpoint
     capabilities, so compatible custom provider ids targeting the same native
     Moonshot hosts inherit the same streaming-usage behavior.
+
+    With the bundled K2.6 pricing, streamed usage that includes input, output,
+    and cache-read tokens is also converted into local estimated USD cost for
+    `/status`, `/usage full`, `/usage cost`, and transcript-backed session
+    accounting.
+
   </Accordion>
 
   <Accordion title="Endpoint and model ref reference">
diff --git a/docs/reference/token-use.md b/docs/reference/token-use.md
index 939d1fcbcf3..5ae89ae3105 100644
--- a/docs/reference/token-use.md
+++ b/docs/reference/token-use.md
@@ -96,6 +96,10 @@ transcript totals can win when stored totals are missing or smaller.
 Usage auth for provider quota windows comes from provider-specific hooks when
 available; otherwise OpenClaw falls back to matching OAuth/API-key credentials
 from auth profiles, env, or config.
+Assistant transcript entries persist the same normalized usage shape, including
+`usage.cost` when the active model has pricing configured and the provider
+returns usage metadata. This gives `/usage cost` and transcript-backed session
+status a stable source even after the live runtime state is gone.
 
 ## Cost estimation (when shown)