openai-python v3.9.0 released (2026-09-05)
openai-python v3.9.0 (2026-09-05) adds prompt cache diagnostics and corrects function argument completion event fields. It also accepts incomplete web search call statuses, refuses overflowing server retry delays, and updates docs and dependencies.
What changed
openai-python v3.9.0: add prompt cache diagnostics; correct function argument completion event fields; accept incomplete web search call statuses; refuse overflowing server retry delays; document throttling and model overload responses; migrate to forked steady.
Why it matters
Developers integrating OpenAI APIs get improved diagnostics and more accurate completion-event behavior, which can speed debugging and reduce integration errors.
Who should care
DevelopersEnterprises
Worth trying
Yes — upgrade if you use prompt cache or function argument completion