# OpenAI GPT-4 Turbo preview (1106) — deprecation status

> Yes — OpenAI deprecated GPT-4 Turbo preview (1106) on September 26, 2025 and shuts it down on October 23, 2026 (in 85 days). The recommended replacement is GPT-5.6 Sol.

The November 2023 preview that introduced 128k context and JSON mode, and the one entry on this site with two conflicting shutdown dates: OpenAI first set it for March 26, 2026, then listed the same id again in the April 2026 announcement with a new date of October 23, 2026. The later announcement is the one that stands.

## Facts

| Field | Value |
| --- | --- |
| Provider | OpenAI |
| Model id | `gpt-4-1106-preview` |
| Status | Deprecated |
| Released | November 6, 2023 |
| Deprecated | September 26, 2025 |
| 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
  - JSON mode has been superseded by structured outputs, which enforce a schema rather than only guaranteeing valid JSON. Worth adopting during the move instead of after it.
  - Parameters it accepts: https://modelparams.dev/models/openai/gpt-5.6-sol

```diff
- "model": "gpt-4-1106-preview"
+ "model": "gpt-5.6-sol"
```

## FAQ

### When will OpenAI GPT-4 Turbo preview (1106) shut down?

OpenAI GPT-4 Turbo preview (1106) is scheduled to shut down on October 23, 2026, in 85 days.

### What replaces OpenAI GPT-4 Turbo preview (1106)?

OpenAI recommends GPT-5.6 Sol (`gpt-5.6-sol`) as the replacement for OpenAI GPT-4 Turbo preview (1106). JSON mode has been superseded by structured outputs, which enforce a schema rather than only guaranteeing valid JSON. Worth adopting during the move instead of after it.

### Is OpenAI GPT-4 Turbo preview (1106) still available?

Yes, for now. OpenAI GPT-4 Turbo preview (1106) 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 GPT-4 Turbo preview (1106) to gpt-5.6-sol?

Swap the model id in your API call: replace "gpt-4-1106-preview" with "gpt-5.6-sol". JSON mode has been superseded by structured outputs, which enforce a schema rather than only guaranteeing valid JSON. Worth adopting during the move instead of after it.

## Sources

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

---

Canonical page: https://modeldeprecations.dev/openai/gpt-4-1106-preview
JSON: https://modeldeprecations.dev/api/v1/models/openai/gpt-4-1106-preview.json