OpenAI sets Jan 14, 2027 API shutdown for GPT-4o, 4o mini, GPT-4.1, and 4.1 mini
OpenAI's deprecations page says the gpt-4o-2024-08-06, gpt-4o-2024-11-20, gpt-4o-mini-2024-07-18, gpt-4.1-2025-04-14, and gpt-4.1-mini-2025-04-14 snapshots leave the API on January 14, 2027, with gpt-6-luna as the recommended replacement for all of them. Fine-tunes built on these models shut down on the same date, so agents still pinned to them have about three months to migrate and re-test tool calls.