OpenAI Evals goes read-only on 31 October

OpenAI’s hosted Evals turns read-only on 31 October 2026 and shuts down on 30 November 2026. If your regression suite lives there, export the eval definitions and the last good run before the read-only date, while you can still re-run them for a baseline. Keep golden items in plain JSON or CSV with an id, a prompt and an expected answer: that shape moves between tools without a converter. The built-in suites in assert(llm) use exactly that shape; importing your own file is next on the roadmap.