What changed
A tighter guarantee, not a break. Every value you can receive now was already possible, so existing handling still covers it; a null check here may now be dead code.
Affects ChatCompletionList reachable from 1 operation.
null|string → string
Who is affected
Code that reads OpenAI's ChatCompletionList objects, used by 1 OpenAI operation.
Before and after
| Where | Before | After |
|---|---|---|
| ChatCompletionList.first_id | null|string | string |
Based on OpenAI’s published API specification. How severity is decided.