---
title: "Azure OpenAI gpt-4o version 2024-05-13 retires on 2026-12-09 | Harbyn"
description: "Azure OpenAI gpt-4o version 2024-05-13 retires on 2026-12-09; replacement: gpt-5.6-sol."
canonical: "https://harbyn.com/changes/azure-openai/2026-10-08-foundry-model-retirement-scheduled-for-2026-12-09"
last-updated: 2026-10-08
---

# Azure OpenAI gpt-4o version 2024-05-13 retires on 2026-12-09

Markdown version of <https://harbyn.com/changes/azure-openai/2026-10-08-foundry-model-retirement-scheduled-for-2026-12-09>.

Retirement - Azure OpenAI. high severity. Announced. Upcoming.

Microsoft Foundry retires gpt-4o version 2024-05-13 on 2026-12-09; the listed replacement is gpt-5.6-sol. gpt-4o versions 2024-08-06 and 2024-11-20 stay until 2027-04-14.

45 days left: the deadline is Dec 9, 2026.

## Facts

| Fact | Value |
| --- | --- |
| Vendor | [Azure OpenAI](https://harbyn.com/vendors/azure-openai.md) |
| Kind | Retirement |
| Severity | high |
| Status | Announced |
| Announced | Oct 8, 2026 (undated by the vendor; already published when we first read the page) |
| Effective | Dec 9, 2026 |
| Added to Harbyn | Oct 8, 2026 |
| Lead time | 62 days of warning |
| Symbols | `gpt-4o` |
| Replacement | `gpt-5.6-sol` |
| Review | Reviewed by a person, extracted by a model |

## Find it in your code

```sh
npx harbyn scan
```

This change names no identifier the scanner can match line by line, so the scan tells you whether your repository uses Azure OpenAI, from its packages and API hosts. Nothing leaves your machine.

## Sources

Where this event comes from: the page we read, when we read it, and the hash of that snapshot.

- <https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-schedule> (deprecations, fetched 2026-10-08 17:16 UTC, sha256 `ff56ace1251c0f2071f42cb6e197252b84be4afc4feb7ed87d84a5c0b7175d7b`)

## Related changes

### More from Azure OpenAI

- [claude-mythos-preview on Foundry retires on 2027-04-02](https://harbyn.com/changes/azure-openai/2026-10-08-claude-mythos-preview-retires-on-2027-04-02.md) (Retirement, effective Apr 2, 2027)
- [claude-opus-4-8 on Foundry retires on 2027-09-01](https://harbyn.com/changes/azure-openai/2026-10-08-claude-opus-4-8-retires-on-2027-09-01.md) (Retirement, effective Sep 1, 2027)
- [gpt-chat-latest preview version 2026-06-24 retired on 2026-09-24](https://harbyn.com/changes/azure-openai/2026-10-08-foundry-model-retirement-scheduled-for-2026-09-24.md) (Retirement, effective Sep 24, 2026)
- [MAI-Image-2.5, MAI-Image-2.5-Flash and MAI-Image-2.5-Pro previews retired on 2026-10-01](https://harbyn.com/changes/azure-openai/2026-10-08-foundry-model-retirement-scheduled-for-2026-10-01.md) (Retirement, effective Oct 1, 2026)

### Changes at other vendors

- [OpenRouter: arcee-ai/trinity-large-thinking expire 2026-10-26](https://harbyn.com/changes/openrouter/2026-10-23-arcee-ai-trinity-large-thinking-expires-2026-10-26.md) (effective Oct 26, 2026)
- [Google Cloud Run and Functions: Node.js 20 runtime decommission](https://harbyn.com/changes/google-cloud/2026-10-08-node-js-20-runtime-decommission.md) (effective Oct 30, 2026)
- [Mistral AI: Z.ai GLM 5.2 (zai-glm-5-2) retires on Mistral on October 31, 2026](https://harbyn.com/changes/mistral/2026-09-29-z-ai-glm-5-2-deprecated-and-scheduled-for-retirement.md) (effective Oct 31, 2026)
- [Fireworks AI: DeepSeek V4 Flash 0731 retires from Serverless Training November 2](https://harbyn.com/changes/fireworks/2026-10-18-upcoming-serverless-training-deprecation-deepseek-v4-flash-0731.md) (effective Nov 2, 2026)

[All upcoming deadlines](https://harbyn.com/deadlines.md)