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Vercel adds a Sessions view to AI Gateway logs showing session affinity
Vercel's AI Gateway logs now group AI requests into sessions and show cache hit rate, cost, models and providers for each one.
Summary
Vercel's AI Gateway logs now include a Sessions view that groups requests into sessions and shows how session affinity routed each one. Each session shows its cost, models, providers and cache hit rate, and you can open it to see every turn. Session affinity runs by default on text and chat requests.
What changed
- New Sessions view in AI Gateway logs groups requests into sessions.
- Each row shows the client, such as Claude Code, Codex or Cursor, plus cost, models, providers and cached input.
- Opening a session shows cache hit rate, duration, and a path listing each turn with its model and timing.
- Sessions can be filtered by turns, client, model, provider, authentication or cost.
- You can set your own sessions with sessionId in providerOptions.gateway or an x-session-id header.
Availability
Available now“Session affinity runs by default on text and chat requests.”
Founder takeaway
If you route coding agents or chat apps through AI Gateway, check the Sessions view to see cache hit rates and cost per session. Send a consistent session id on every request in a conversation so requests group the way you want.
Source
Researched and drafted with AI from the official sources above, then checked automatically before publishing. Spotted a mistake? Tell us.
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