Obituaries · OpenAI
gpt-4.1-nano-2025-04-14, 2025–2026
Retired by OpenAI
gpt-4.1-nano-2025-04-14, an OpenAI model that answered questions, wrote emails and was blamed for both, was switched off on October 23, 2026, aged 1 year and 6 months. Code that still calls it will find out the hard way.
Survived by gpt-5.6-luna, younger, cheaper, and named in the same documentation table.
Last seen alive
In a scan of the 60 most-starred LLM repositories on GitHub (November 5, 2026), this code still names it:
- mem0ai/mem0 (68,449 stars) ·
examples/misc/multillm_memory.py
| Model ID | gpt-4.1-nano-2025-04-14 |
|---|---|
| Provider | OpenAI deprecations page |
| Born | April 14, 2025 |
| Shut down | October 23, 2026 |
| Successor | gpt-5.6-luna |
In lieu of flowers
Replace the string. Search your code for gpt-4.1-nano-2025-04-14 and swap it for gpt-5.6-luna, 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: gpt-4-1-nano-2025-04-14 on Model Graveyard Check