If you've shipped an AI feature on top of
gpt-4-0613,
claude-3-opus-20240229, or
gemini-2.0-flash-001, you've probably been burned by
this before: the model you built against gets a shutdown date, the
announcement goes out on a provider blog post or changelog you never
read, and one day the endpoint just stops responding — or worse,
silently routes to a different model with a different output shape.
OpenAI, Anthropic, and Google each publish their own deprecation pages, in their own formats, on their own schedules — deprecation, retirement, sunset, shutdown, whatever a given provider calls it that week, it all means the same thing to your production traffic. Nobody checks all three regularly. So here's all three, in one table, as of today.
Models retiring in 2026
Sorted by shutdown date — soonest first. All dates are as published by the provider; always double-check the source link before migrating.