OpenAI API Models o1 End of Life
Support dates and upgrade guidance — rebuilt from live data.
Supported
OpenAI API Models o1 is actively supported. It reaches end of life on 23 Oct 2026.
37 days of security support left
95% of this branch's supported lifetime has elapsed — 5 Dec 2024 → 23 Oct 2026.
Support timeline
Official dates from the OpenAI API Models release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 5 Dec 2024 | 1y 9mo ago |
| Active support ended | 22 Apr 2026 | security fixes only after this |
| Deprecated support ends | 23 Oct 2026 | in 1mo |
| Latest release | — | current |
How much runway a newer branch buys
OpenAI API Models o1 is the newest branch — this is the longest runway currently available.
Frequently asked questions
When does OpenAI API Models o1 reach end of life?
OpenAI API Models o1 reaches end of life on 23 Oct 2026 — 37 days from now. After that date it receives no security fixes.
Is OpenAI API Models o1 still supported?
Yes. OpenAI API Models o1 is currently maintained. Latest release: —.
What happens when OpenAI API Models o1 reaches end of life?
Security fixes stop. After 23 Oct 2026 this branch receives no further updates under standard support.
How long do I have to upgrade from OpenAI API Models o1?
37 days. This is already the newest branch, so this is the longest runway currently available.
All OpenAI API Models versions
gpt-6-astra supported gpt-5.6-cyber supported gpt-live-transcribe supported gpt-transcribe supported gpt-5.6-luna supported gpt-5.6-terra supported gpt-5.6-sol supported gpt-realtime-2.1 supported gpt-realtime-2.1-mini supported gpt-realtime-2 supported gpt-realtime-translate supported gpt-realtime-whisper supported chat-latest supported gpt-5.5 supported gpt-5.5-pro supported gpt-image-2 supported gpt-5.4-mini supported gpt-5.4-nano supported gpt-5.4 supported gpt-5.4-pro supported gpt-5.3-chat-latest EOL 2026 gpt-audio-1.5 supported gpt-realtime-1.5 supported gpt-5.3-codex supported gpt-audio supported gpt-audio-mini supported gpt-5.2-codex EOL 2026 gpt-image-1.5 supported gpt-5.2 supported gpt-5.2-chat-latest EOL 2026 gpt-5.2-pro supported gpt-5.1-codex-max EOL 2026 gpt-5.1-codex EOL 2026 gpt-5.1-codex-mini EOL 2026 gpt-5.1 supported gpt-5.1-chat-latest EOL 2026 gpt-4o-transcribe-diarize supported gpt-image-1-mini supported gpt-realtime-mini supported sora-2 supported sora-2-pro supported gpt-5-codex EOL 2026 gpt-realtime supported gpt-5 supported gpt-5-chat-latest EOL 2026 gpt-5-mini supported gpt-5-nano supported gpt-5-pro supported gpt-oss-120b supported gpt-oss-20b supported codex-mini-latest EOL 2026 o3 supported o3-pro supported o4-mini supported gpt-4.1 supported gpt-4.1-mini supported gpt-4.1-nano supported chatgpt-image-latest supported gpt-image-1 supported gpt-4o-mini-transcribe supported gpt-4o-mini-tts supported gpt-4o-transcribe supported o1-pro supported o3-deep-research EOL 2026 o4-mini-deep-research EOL 2026 o3-mini supported o1 supported omni-moderation-latest supported o1-mini EOL 2025 chatgpt-4o-latest EOL 2026 gpt-4o-mini supported gpt-4o supported text-embedding-3-large supported text-embedding-3-small supported gpt-4-turbo supported tts-1 supported tts-1-hd supported babbage-002 supported davinci-002 supported gpt-4 supported gpt-3.5-turbo supported whisper-1 supported text-moderation-latest EOL 2025 text-moderation-stable EOL 2025 text-embedding-ada-002 supported