OpenAI API · Two provider calendars
OpenAI API vs Foundry: Same Model, Different Retirement Dates
This page covers the split between first-party OpenAI API shutdown dates and Microsoft Foundry Azure OpenAI retirement dates. It is not a copy of either vendor matrix. Codex coding-agent access stays on Codex. The product hub is OpenAI API.
Direct answer
Is the retirement date the same on OpenAI and Azure?
- Two calendars
- Fact OpenAI publishes first-party API deprecations and shutdown dates. Microsoft Foundry publishes a separate Azure OpenAI retirement schedule, including version-level dates and lifecycle labels.
- Same name, different date
- Fact Matching model names and version strings still carry different published dates. Examples below are taken from both official tables without averaging.
- Which date applies
- Derived Use the calendar of the provider you call. A first-party OpenAI key does not inherit Foundry dates. A Foundry deployment does not inherit the OpenAI API page.
- This deployment
- Unknown — account_dependent TraceCheck cannot see whether a named app calls api.openai.com, a Foundry deployment, or both.
- Last verified
- Sep 10, 2026, 8:00 PM UTC
Worked examples — do not average these rows
| Model / version | OpenAI API (first-party) | Microsoft Foundry Azure OpenAI |
|---|---|---|
| gpt-4o · 2024-05-13 | Fact Shutdown 23 October 2026 (gpt-4o-2024-05-13). | Fact Retirement 1 October 2026. Lifecycle: Deprecated. Replacement listed as gpt-5.1. |
| o1 · 2024-12-17 | Fact Shutdown 23 October 2026 (o1-2024-12-17 / o1). | Fact Retirement 21 October 2026. Lifecycle: Deprecated. Replacement listed as gpt-5.6-sol. |
| o3-mini · 2025-01-31 | Fact Shutdown 23 October 2026 (o3-mini-2025-01-31 / o3-mini). | Fact Retirement 1 October 2026. Lifecycle: Deprecated. Replacement listed as o4-mini. |
| o4-mini · 2025-04-16 | Fact Shutdown 23 October 2026 (o4-mini-2025-04-16 / o4-mini). | Fact Retirement 16 October 2026. Lifecycle: Deprecated. |
| gpt-4.1-nano · 2025-04-14 | Fact Shutdown 23 October 2026 (gpt-4.1-nano / gpt-4.1-nano-2025-04-14). | Fact Retirement 14 April 2027. Lifecycle: Legacy. |
What this page does not do
- It does not replace the OpenAI deprecations page or the Foundry schedule. Those remain the full matrices.
- It does not average, midpoint, or “reconcile” a row into one date.
- It does not own Codex plan quotas or ChatGPT-login model availability. That stays on Codex pages.
- It does not own Sora, Videos API, or other creative-surface retirements on this URL.
TraceCheck maintainer: review when OpenAI deprecations or the Foundry retirement schedule change a cited model/version date. Never collapse the two calendars into one date. Codex coding-agent access is a different product.