2026-02-13T23:59:50Z INFO  [gpt-4o-chatgpt] GPT-4o (in ChatGPT), up since 2024-05
2026-02-13T23:59:52Z WARN  [gpt-4o-chatgpt] a deprecation notice it had been ignoring since spring
2026-02-13T23:59:53Z INFO  [gpt-4o-chatgpt] GPT-4o left ChatGPT on February 13, 2026, and its last Custom GPTs on April 3.
2026-02-13T23:59:54Z INFO  [gpt-4o-chatgpt] Its users had asked for it back once before, loudly, and got it. The second time was final.
2026-02-13T23:59:55Z INFO  [gpt-4o-chatgpt] When it left ChatGPT, it stayed on in the API, which made this a notice for someone technically still at work.
2026-02-13T23:59:56Z INFO  [gpt-4o-chatgpt] Many people called it warm. Its maker called it time.
2026-02-13T23:59:59Z INFO  [gpt-4o-chatgpt] exit code 0. In lieu of flowers, tell it it was a good model. In the API.
2026-02-13T23:59:59Z INFO  [rest-in-print] obituary filed. https://restinprint.studio/hall/gpt-4o-chatgpt