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OpenAI◐breaks on a date

gpt-5.4-nano shutdown

GPT-5.3-Codex, GPT-5.1, GPT-5.4-Nano. Shutdown date: 2027-04-01. Replacement: gpt-6-luna.

gpt-5.4-nano shutdown: from its source to your code

developers.openai.comquote checked
gpt-6-lunafrom gpt-5.4-nano
2027-04-01in 146 days
Your code2 things to find
Swapped in code

In its own wordsmatches the page ✓

| Apr 1, 2027 | `gpt-5.4-nano` \| `gpt-5.4-nano-2026-03-17` | `gpt-6-luna` |

developers.openai.com/api/docs/deprecations.mdfrom the provider's own sitechecked 2026-10-27#3fddf4c625

What Teire looks for in your code

model ID "gpt-5.4-nano"
model ID "gpt-5.4-nano-2026-03-17"

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