AI Gateway logs now show session affinity
Vercel's changelog lists an entry titled "AI Gateway logs now show session affinity," published on October 17, 2026. The available source text contains only the changelog title and page metadata; it does not include a body describing the mechanism, scope, or configuration of the change. Based on the title alone, the update concerns the logging output of Vercel's AI Gateway, which now displays session affinity information. The source does not specify how session affinity is calculated, which upstream model providers or models are involved, whether the information appears in a particular log view or field, or whether users must enable anything to see it. It also does not describe any change to routing behavior, only to what the logs show. Because the excerpt is limited to the title, this digest does not extend beyond confirming that AI Gateway logs now include session affinity data.
Developers inspecting AI Gateway logs can now see session affinity information, per Vercel's changelog title.