Under the hood
SDK turn results now capture finer streaming latency timing for the first content frame.
Headless SDK query results now capture finer-grained streaming latency: first_content_frame_ms and timing for when the first stream chunk was posted/acknowledged, including wall-clock variants, added alongside the existing ttft metrics.
Names in the bundlefirst_content_frame_ms
Documented inclaude-code/agent-sdk/typescript