OpenAI removes its gpt-5.2 and gpt-5.3 chat snapshots today
Both -latest snapshots leave the API after 3 months' notice; gpt-5.6-sol is the only migration path, and it's a different model — retest before you cut over.
Copy markdown
The two IDs that stop responding
gpt-5.2-chat-latest and gpt-5.3-chat-latest are pulled from the OpenAI API today, Aug 10. Any request still pinned to those snapshot IDs will start failing — the shutdown was posted May 8, so it has had roughly 3 months' notice.
gpt-5.6-sol is the only exit
OpenAI points both snapshots to gpt-5.6-sol, a newer, differently-tuned model. Swap the ID and regression-test prompts, output parsing, latency and cost in a non-prod environment before the cutover — not after.
Check whether you're actually exposed
Only the -latest chat snapshots are affected; if your code calls a versioned or general model ID, nothing changes. ChatGPT app users lost 5.2 back in June, so the API was its last home — and today closes it.