gpt-5.1 retirement date and replacement

Name: gpt-5.1 retires (OpenAI API)
Start: 2027-04-01
End: 2027-04-01

OpenAI API · Model · retires Apr 1, 2027 (in 6 months)Unverified

Dates

Checked Oct 2, 2026 on OpenAI's page

Retires	Apr 1, 2027 (in 6 months)
Announced	Oct 1, 2026
Replacement	gpt-6-sol
Model page	models.fru.dev/models/gpt-5-1
Notice	GPT-5.3-Codex, GPT-5.1, GPT-5.4-Nano
Source	developers.openai.com/api/docs/deprecations

Date	Change	Source
Oct 2today	Announced2027-04-01UnverifiedGPT-5.3-Codex, GPT-5.1, GPT-5.4-NanoSource	Source

gpt-4o-mini-transcribeOpenAI APIModelgpt-live-transcribe or gpt-transcribein 5moFeb 26, 2027
gpt-4o-transcribeOpenAI APIModelgpt-live-transcribe or gpt-transcribein 5moFeb 26, 2027
gpt-4o-transcribe-diarizeOpenAI APIModelgpt-live-transcribe or gpt-transcribein 5moFeb 26, 2027
whisper-1OpenAI APIModelgpt-live-transcribe or gpt-transcribein 5moFeb 26, 2027
gpt-5.3-codexUnverifiedOpenAI APIModelgpt-6-solin 6moApr 1, 2027
gpt-5.4-nanoUnverifiedOpenAI APIModelgpt-6-lunain 6moApr 1, 2027