# OpenAI o1-pro — deprecation status

> Yes — OpenAI deprecated o1-pro on April 22, 2026 and shuts it down on October 23, 2026 (in 85 days). The recommended replacement is GPT-5.6 Sol.

The long-compute variant of o1, available only through the Responses API and priced for problems where minutes of thinking are worth it. Deprecated in April 2026 with an October shutdown.

## Facts

| Field | Value |
| --- | --- |
| Provider | OpenAI |
| Model id | `o1-pro` |
| Status | Deprecated |
| Aliases | `o1-pro-2025-03-19` |
| Released | March 19, 2025 |
| Deprecated | April 22, 2026 |
| Shutdown | October 23, 2026 (in 85 days) |
| Last verified | July 30, 2026 |

## Replacement

- **GPT-5.6 Sol** (`gpt-5.6-sol`) · recommended — https://modeldeprecations.dev/openai/gpt-5.6-sol
  - OpenAI directs o1-pro traffic to Sol with reasoning set to its pro mode rather than to a separate model id. The dial moved from the id into the request body.
  - Parameters it accepts: https://modelparams.dev/models/openai/gpt-5.6-sol

```diff
- "model": "o1-pro"
+ "model": "gpt-5.6-sol"
```

## FAQ

### When will OpenAI o1-pro shut down?

OpenAI o1-pro is scheduled to shut down on October 23, 2026, in 85 days.

### What replaces OpenAI o1-pro?

OpenAI recommends GPT-5.6 Sol (`gpt-5.6-sol`) as the replacement for OpenAI o1-pro. OpenAI directs o1-pro traffic to Sol with reasoning set to its pro mode rather than to a separate model id. The dial moved from the id into the request body.

### Is OpenAI o1-pro still available?

Yes, for now. OpenAI o1-pro is deprecated but still answers requests until October 23, 2026. Deprecated models get no further updates and are the first to lose capacity.

### How do I migrate from OpenAI o1-pro to gpt-5.6-sol?

Swap the model id in your API call: replace "o1-pro" with "gpt-5.6-sol". OpenAI directs o1-pro traffic to Sol with reasoning set to its pro mode rather than to a separate model id. The dial moved from the id into the request body.

### Does this apply to o1-pro-2025-03-19 too?

Yes. OpenAI o1-pro is also published as `o1-pro-2025-03-19`; that id shares the same lifecycle dates as `o1-pro`.

## Sources

- [OpenAI API deprecations](https://developers.openai.com/api/docs/deprecations) — accessed 2026-07-30

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Canonical page: https://modeldeprecations.dev/openai/o1-pro
JSON: https://modeldeprecations.dev/api/v1/models/openai/o1-pro.json