gpt-5.3-codex — GA or Deprecated — shutdown 2027-08-24 or Apr 1, 2027 — sources disagree
For gpt-5.3-codex, provider is Microsoft Azure / Foundry; lifecycle status is disputed: GA per learn.microsoft.com, Deprecated per developers.openai.com; shutdown / retirement date is disputed: 2027-08-24 per learn.microsoft.com, Apr 1, 2027 per developers.openai.com; platform / deployment scope is Azure / Microsoft Foundry, recorded from its source on 2026-08-28; source re-checked 2026-10-13.
- Provider
- Microsoft Azure / Foundry our reading
- OpenAI per developers.openai.com
- Model ID / API name
- gpt-5.3-codex verified
- Human-readable model name
- gpt-5.3-codex verified
- Lifecycle status
- GA sources disagree
- Shutdown / retirement date
- 2027-08-24 sources disagree
- Platform / deployment scope
- Azure / Microsoft Foundry our reading
- Deprecation announced
- 2026-10-01 per developers.openai.com
- Recommended replacement
- gpt-6-sol per developers.openai.com
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
What the source says
| gpt-5.3-codex | 2026-02-24 | GA | 2027-08-24 | — |
— learn.microsoft.com, retrieved 2026-08-28
Where each value comes from
The value above is stated away from the sentence quoted with the answer, so the passage that states it is shown here too.
Shutdown / retirement date
| Model | Version | Lifecycle | Retirement date | Replacement | | --- | --- | --- | --- | --- | | codex-mini | 2025-05-16 | Deprecated | 2026-11-15 | — | | gpt-4.1 | 2025-04-14 | Deprecated | 2027-04-14 | — | | gpt-4.1-mini | 2025-04-14 | Deprecated | 2027-04-14 | — | | gpt-4.1-nano | 2025-04-14 | Deprecated | 2027-04-14 | — | | gpt-4o | 2024-05-13 | Deprecated | 2026-12-09 | gpt-5.6-sol | | gpt-4o | 2024-08-06 | Deprecated | 2027-04-14 | gpt-5.1 | | gpt-4o | 2024-11-20 | Legacy | 2027-04-14 | gpt-5.1 | | gpt-4o-mini | 2024-07-18 | Deprecated | 2027-04-14 | — | | gpt-4o-mini-transcribe | 2025-03-20 | GA | 2026-10-15 | — | | gpt-4o-mini-transcribe | 2025-12-15 | GA | 2027-06-15 | — | | gpt-4o-mini-tts | 2025-03-20 | Preview | 2026-10-15 | — | | gpt-4o-mini-tts | 2025-12-15 | GA | 2027-06-15 | — | | gpt-4o-transcribe | 2025-03-20 | GA | 2026-10-15 | — | | gpt-4o-transcribe-diarize | 2025-10-15 | GA | 2027-04-15 | — | | gpt-5 | 2025-08-07 | GA | 2027-02-09 | — | | gpt-5-chat | 2025-08-07 | Retired | 2026-06-29 | gpt-chat-latest | | gpt-5-chat | 2025-10-03 | Retired | 2026-05-13 | gpt-chat-latest | | gpt-5-codex | 2025-09-15 | GA | 2027-03-17 | — | | gpt-5-mini | 2025-08-07 | GA | 2027-02-09 | — | | gpt-5-nano | 2025-08-07 | GA | 2027-02-09 | — | | gpt-5-pro | 2025-10-06 | GA | 2027-04-07 | — | | gpt-5.1 | 2025-11-13 | GA | 2027-05-15 | — | | gpt-5.1-chat | 2025-11-13 | Retired | 2026-06-29 | gpt-chat-latest | | gpt-5.1-codex | 2025-11-13 | GA | 2027-05-15 | — | | gpt-5.1-codex-max | 2025-12-04 | GA | 2027-05-18 | — | | gpt-5.1-codex-mini | 2025-11-13 | GA | 2027-05-15 | — | | gpt-5.2 | 2025-12-11 | GA | 2027-06-08 | — | | gpt-5.2-chat | 2025-12-11 | Retired | 2026-05-13 | gpt-chat-latest | | gpt-5.2-chat | 2026-02-10 | Retired | 2026-06-29 | gpt-chat-latest | | gpt-5.2-codex | 2026-01-14 | GA | 2027-07-13 | — | | gpt-5.3-chat | 2026-03-03 | Retired | 2026-06-29 | gpt-chat-latest | | gpt-5.3-codex | 2026-02-24 | GA | 2027-08-24 | — |
— all from learn.microsoft.com, retrieved 2026-08-28
Sources disagree
More than one authority states this, and they do not state the same thing. Both are reproduced with the source each came from — deciding between them is yours, not ours.
Lifecycle status
learn.microsoft.com says lifecycle status is GA, as of 2026-08-28.
| gpt-5.3-codex | 2026-02-24 | GA | 2027-08-24 | — |
https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-schedule
developers.openai.com says lifecycle status is Deprecated, as of 2026-10-05.
| Apr 1, 2027 | `gpt-5.3-codex` | `gpt-6-sol` |
https://developers.openai.com/api/docs/deprecations.md
Shutdown / retirement date
learn.microsoft.com says shutdown / retirement date is 2027-08-24, as of 2026-08-28.
| gpt-5.3-codex | 2026-02-24 | GA | 2027-08-24 | — |
https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-schedule
developers.openai.com says shutdown / retirement date is Apr 1, 2027, as of 2026-10-05.
| Apr 1, 2027 | `gpt-5.3-codex` | `gpt-6-sol` |
Sources
- learn.microsoft.comhttps://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-schedule
- developers.openai.comhttps://developers.openai.com/api/docs/deprecations.md