diff --git a/changelog.d/features/9571-plugin-streaming-usage-timing.md b/changelog.d/features/9571-plugin-streaming-usage-timing.md
index d14ea459d8..84720d2df5 100644
--- a/changelog.d/features/9571-plugin-streaming-usage-timing.md
+++ b/changelog.d/features/9571-plugin-streaming-usage-timing.md
@@ -1,20 +1,11 @@
----
-kind: feature
-ref: "#9571"
----
+- **feat(plugins):** add onStreamComplete built-in event exposing streaming usage and timing (#9571)
 
-feat(plugins): add onStreamComplete built-in event exposing streaming usage and timing (#9571)
+  Adds a new `onStreamComplete` plugin event that fires after an SSE stream is fully
+  consumed, carrying usage token counts and timing metrics (latency, TTFT). Built-in
+  events now include `onStreamComplete` as a fire-and-forget lifecycle hook.
 
-Adds a new `onStreamComplete` plugin event that fires after an SSE stream is fully
-consumed, carrying usage token counts and timing metrics (latency, TTFT). Built-in
-events now include "onStreamComplete" as a fire-and-forget lifecycle hook.
+  Payload: `status`, `usage` (prompt_tokens, completion_tokens, reasoning_tokens,
+  cache_read_input_tokens, cache_creation_input_tokens), `timing` (latencyMs, ttft),
+  `model`, `provider`, `errorCode`.
 
-The payload shape:
-
-- `status` — HTTP status of the stream
-- `usage.prompt_tokens`, `.completion_tokens`, `.reasoning_tokens`,
-  `.cache_read_input_tokens`, `.cache_creation_input_tokens`
-- `timing.latencyMs`, `.ttft`
-- `model`, `provider`, `errorCode`
-
-Non-breaking — existing `onResponse` hooks with `{ streamed: true }` remain unchanged.
+  Non-breaking — existing `onResponse` hooks with `{ streamed: true }` remain unchanged.