Response field seed is no longer guaranteed

What changed

Producer-side tools call this non-breaking. For a consumer it is a null dereference on an unknown future date.

Affects seed on FineTuningJob reachable from 6 operations. Nothing fails at the call; it fails wherever the value is finally used, which is usually somewhere else entirely.

can now be null

Who is affected

Code that reads OpenAI's FineTuningJob objects, used by 6 OpenAI operations.

Before and after

Code that breaks

// response.seed may now be absent or null
const seed = response.seed ?? fallback;

Based on OpenAI’s published API specification. How severity is decided.