Obituaries · OpenAI
chatgpt-4o-latest, 2024–2026
OpenAI model switched off after 1 year and 6 months
The version people actually talked to in ChatGPT. When it changed, they noticed; when it left, they protested.
chatgpt-4o-latest, an OpenAI model that answered questions, wrote emails and was blamed for both, was switched off on February 17, 2026, aged 1 year and 6 months. Calls to its ID are now expected to fail.
Survived by gpt-5.1-chat-latest, younger, cheaper, and named in the same documentation table.
| Model ID | chatgpt-4o-latest |
|---|---|
| Provider | OpenAI deprecations page |
| Born | August 13, 2024 |
| Shut down | February 17, 2026 |
| Successor | gpt-5.1-chat-latest |
In lieu of flowers
Replace the string. Search your code for chatgpt-4o-latest and swap it for gpt-5.1-chat-latest, or paste a repo into Model Graveyard Check to find every dead model at once.
Want to say something to it? Leave a letter on the farewell wall.
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Technical notice, with a code scanner: chatgpt-4o-latest on Model Graveyard Check