Response schema changed for POST /chat/completions (Choice)

What changed

Response schema changed for POST /chat/completions (Choice) Affected surface: POST /chat/completions. Root cause: schema `Choice`. Detected at Tue, 19 May 2026 01:36:41 UTC UTC.

Diff

{
  "path": "POST /chat/completions",
  "removed_fields": [
    "tool_calls"
  ],
  "schema_path": "schema Choice"
}

Likely impact

The contract still holds, but observable behavior shifted — defaults, response timing, or rate-limit shaping. Existing code keeps compiling and most calls keep working, but edge cases may differ. Worth a sanity check.

Recommended action

Diff your serializers against the new schema. The diff above shows what moved.