Structured model outputs (Responses API) returning invalid JSON 80% of the time
OpenAI Developer Community
March 29, 2026
_j:
and also whether, without web search, things improve significantly.
This is a really interesting idea and potentially worth exploring.
Unfortunately, I have not been able to reproduce these bugged responses from the model myself, but I have seen similar reports come up with some regularity.
@stanislav.modrak, are you willing and able to share a clear repro for this, either here or via private message?
Discussion in the ATmosphere