# GPT-5.1

GPT-5.1 è un modello di OpenAI, rilasciato il 2025-11-13. La finestra di contesto è di 400.000 token. L’output massimo è di 128.000 token. Il prezzo per milione di token è $1,25 per l’input e $10,00 per l’output.

- Sviluppatore: OpenAI
- Id: gpt-5.1
- Secondo indiscrezioni: 2025-11-12T00:00:00.000Z
- Rilasciato: 2025-11-13T00:00:00.000Z
- Avvistamento: 2026-10-02T05:01:45.891Z
  - [link di riscontro](https://developers.openai.com/api/docs/models/gpt-5.1)
- Stato: Rilasciato
- Disponibilità API: 2025-11-13
  - [link di riscontro](https://developers.openai.com/api/docs/changelog)
  - [link di riscontro](https://openai.com/index/gpt-5-1-for-developers)
- Canonico: https://alexgetman.com/it/models/openai/gpt-5-1/

## Domande

### Qual è la finestra di contesto di GPT-5.1?

La finestra di contesto è di 400.000 token. L’output massimo è di 128.000 token.

### Quanto costa GPT-5.1?

Il prezzo per milione di token è $1,25 per l’input e $10,00 per l’output. L'ingresso in cache costa $0,125 per milione.

### Quando è stato rilasciato GPT-5.1?

Il 2025-11-13.

## Cronologia

- 2026-10-07T18:13:28.058Z · [OpenAI · ChatGPT release notes](https://help.openai.com/en/articles/6825453-chatgpt-release-notes)
- 2026-10-07T18:13:28.058Z · [OpenAI · ChatGPT release notes](https://help.openai.com/en/articles/6825453-chatgpt-release-notes)
> As of March 11, 2026, GPT-5.1 models are no longer available in ChatGPT
- 2026-10-07T19:40:56.675Z · [OpenAI · news](https://openai.com/index/gpt-5-1-for-developers)
> GPT-5.1 is now available in the API, bringing faster adaptive reasoning, extended prompt caching, improved coding performance, and new apply_patch and shell tools
- 2026-10-07T19:40:58.119Z · [OpenAI · system cards](https://deploymentsafety.openai.com/gpt-5-1/)
- 2026-11-05T14:39:16.565Z · [OpenAI · Model release notes](https://help.openai.com/en/articles/9624314-model-release-notes)
> As of March 11, 2026, GPT-5.1 models are no longer available in ChatGPT
- 2026-11-10T17:58:10.980Z · [GitHub · openai/openai-agents-js · code](https://github.com/openai/openai-agents-js/blob/7589b9c40120b89a7d2d28a5a60b4defe1ed7bf5/packages/agents-core/src/sandbox/capabilities/compaction.ts)
> 4.1-2025-04-14',
>   'gpt-4.1-mini',
>   'gpt-4.1-mini-2025-04-14',
>   'gpt-4.1-nano',
>   'gpt-4.1-nano-2025-04-14',
> ]);
> 
> const SANDBOX_CONTEXT_WINDOWS_400K = new Set([
>   'gpt-5',
>   'gpt-5-codex',
>   'gpt-5-mini',
>   'gpt-5-nano',
>   'gpt-5-pro',
>   'gpt-5.1',
>   'gpt-5.1-codex',
>   'gpt-5.1-codex-max',
>   'gpt-5.1-codex-mini',
>   'gpt-5.2',
>   'gpt-5.2-codex',
>   'gpt-5.2-codex-cyber',
>   'gpt-5.2-pro',
>   'gpt-5.3-codex',
>   'gpt-5.3-codex-spark',
>   'gpt-5.4-mini',
>   'gpt-5.4-nano',
> ]);
> 
> const SANDBOX_CONTEXT_WINDOWS_200K = new Set([
>   'codex-mini-latest',
>   'o1',
>   'o1-2024-12-17',
>   'o1-pro',
>   'o3',
>   'o3-2025-04-16',
>   'o3-mini',
>   'o3-pro',
>   'o3-deep-research',
>   'o4-mini',
>   'o4-mini-2025-04-16',
>   'o4-mini-deep-research',
> ]);
> 
> const SANDBOX_CONTEXT_WINDOWS_128K = new Set([
>   'gpt-4o',
>   'gpt-4o-2024-08-06',
>   'gpt-4o-mini',
>   'gpt-4o-mini-2024-07-18',
>   'gpt-5-chat-latest',
>   'gpt-5.1
- 2026-11-10T17:58:16.002Z · [GitHub · openai/openai-python · code](https://github.com/openai/openai-python/blob/0ebd00647f6088fb100b03440c6c4554bbab549d/src/openai/types/beta/beta_responses_client_event.py)
>          "gpt-5.4-nano-2026-03-17",
>             "gpt-5.3-chat-latest",
>             "gpt-5.2",
>             "gpt-5.2-2025-12-11",
>             "gpt-5.2-chat-latest",
>             "gpt-5.2-pro",
>             "gpt-5.2-pro-2025-12-11",
>             "gpt-5.1",
>             "gpt-5.1-2025-11-13",
>             "gpt-5.1-codex",
>             "gpt-5.1-mini",
>             "gpt-5.1-chat-latest",
>             "gpt-5",
>             "gpt-5-mini",
>             "gpt-5-nano",
>             "gpt-5-2025-08-07",
>             "gpt-5-mini-2025-08-07",
>             "gpt-5-nano-2025-08-07",
>             "gpt-5-chat-latest",
>             "gpt-4.1",
>             "gpt-4.1-mini",
>             "gpt-4.1-nano",
>             "gpt-4.1-2025-04-14",
>             "gpt-4.1-mini-2025-04-14",
>             "gpt-4.1-nano-2025-04-14",
>             "o4-mini",
>             "o4-mini-2025-04-16",
>             "o3",
>             "o3-2025-04-16",
>     
- 2026-11-10T17:59:50.472Z · [GitHub · openai/openai-agents-python · code](https://github.com/openai/openai-agents-python/blob/d68961657843c7d81dfc25834484f8aac2957eb3/src/agents/sandbox/capabilities/compaction.py)
> -2025-08-07",
>             "gpt-5-codex",
>             "gpt-5-mini",
>             "gpt-5-mini-2025-08-07",
>             "gpt-5-nano",
>             "gpt-5-nano-2025-08-07",
>             "gpt-5-pro",
>             "gpt-5-pro-2025-10-06",
>             "gpt-5.1",
>             "gpt-5.1-2025-11-13",
>             "gpt-5.1-codex",
>             "gpt-5.1-codex-max",
>             "gpt-5.1-codex-mini",
>             "gpt-5.2",
>             "gpt-5.2-2025-12-11",
>             "gpt-5.2-codex",
>             "gpt-5.2-pro",
>             "gpt-5.2-pro-2025-12-11",
>             "gpt-5.3-codex",
>             "gpt-5.4-mini",
>             "gpt-5.4-mini-2026-03-17",
>             "gpt-5.4-nano",
>             "gpt-5.4-nano-2026-03-17",
>         ),
>         400_000,
>     ),
>     **_model_context_windows(
>         (
>             "codex-mini-latest",
>             "o1",
>             "o1-2024-12-17",
>             "o1-pro",
>             "o1-
- 2026-11-10T18:00:44.369Z · [GitHub · openai/codex · code](https://github.com/openai/codex/blob/82e6bacb9c6950d3b56cb153847fa80bdd698053/.github/codex/home/config.toml)
> model = "gpt-5.1"
> 
> # Consider setting [mcp_servers] here!
> 
- 2026-11-12T18:45:20.401Z · [GitHub · openai/openai-node · code](https://github.com/openai/openai-node/blob/b579bcb3e586d22269ffe6fe504653a0e05acbe8/src/resources/beta/responses/responses.ts)
>    | 'gpt-5.4-nano'
>     | 'gpt-5.4-mini-2026-03-17'
>     | 'gpt-5.4-nano-2026-03-17'
>     | 'gpt-5.3-chat-latest'
>     | 'gpt-5.2'
>     | 'gpt-5.2-2025-12-11'
>     | 'gpt-5.2-chat-latest'
>     | 'gpt-5.2-pro'
>     | 'gpt-5.2-pro-2025-12-11'
>     | 'gpt-5.1'
>     | 'gpt-5.1-2025-11-13'
>     | 'gpt-5.1-codex'
>     | 'gpt-5.1-mini'
>     | 'gpt-5.1-chat-latest'
>     | 'gpt-5'
>     | 'gpt-5-mini'
>     | 'gpt-5-nano'
>     | 'gpt-5-2025-08-07'
>     | 'gpt-5-mini-2025-08-07'
>     | 'gpt-5-nano-2025-08-07'
>     | 'gpt-5-chat-latest'
>     | 'gpt-4.1'
>     | 'gpt-4.1-mini'
>     | 'gpt-4.1-nano'
>     | 'gpt-4.1-2025-04-14'
>     | 'gpt-4.1-mini-2025-04-14'
>     | 'gpt-4.1-nano-2025-04-14'
>     | 'o4-mini'
>     | 'o4-mini-2025-04-16'
>     | 'o3'
>     | 'o3-2025-04-16'
>     | 'o3-mini'
>     | 'o3-mini-2025-01-31'
>     | 'o1'
>     | 'o1-2024-12-17'
>     | 'o1-preview'
>     | 'o1-preview-2024-09-12'
>     | 'o1-mini'
>     | 'o1-m
- 2026-11-14T00:29:48.887Z · [OpenAI · official articles](https://openai.com/index/gpt-5-1-for-developers)
**Utilizzo confermato**
- 2026-11-14T00:29:48.887Z · [OpenAI · official articles · Introducing group chats in ChatGPT](https://openai.com/index/group-chats-in-chatgpt)
- 2026-11-14T00:29:48.887Z · [OpenAI · official articles](https://openai.com/index/introducing-gpt-5-2)
> In ChatGPT, GPT‑5.1 will still be available to paid users for three months under legacy models, after which we will sunset GPT‑5.1

## Link di riscontro

- [Artificial Analysis · benchmarks](https://artificialanalysis.ai/models)
- [OpenAI · system cards](https://deploymentsafety.openai.com/gpt-5-1/)
- [openai-api-changelog](https://developers.openai.com/api/docs/changelog)
- [review](https://developers.openai.com/api/docs/models/gpt-5.1)
- [openai-pricing](https://developers.openai.com/api/docs/pricing)
- [GitHub · openai/codex · code](https://github.com/openai/codex/blob/82e6bacb9c6950d3b56cb153847fa80bdd698053/.github/codex/home/config.toml)
- [GitHub · openai/openai-agents-js · code](https://github.com/openai/openai-agents-js/blob/7589b9c40120b89a7d2d28a5a60b4defe1ed7bf5/packages/agents-core/src/sandbox/capabilities/compaction.ts)
- [GitHub · openai/openai-agents-python · code](https://github.com/openai/openai-agents-python/blob/d68961657843c7d81dfc25834484f8aac2957eb3/src/agents/sandbox/capabilities/compaction.py)
- [GitHub · openai/openai-node · code](https://github.com/openai/openai-node/blob/b579bcb3e586d22269ffe6fe504653a0e05acbe8/src/resources/beta/responses/responses.ts)
- [GitHub · openai/openai-python · code](https://github.com/openai/openai-python/blob/0ebd00647f6088fb100b03440c6c4554bbab549d/src/openai/types/beta/beta_responses_client_event.py)
- [OpenAI · ChatGPT release notes](https://help.openai.com/en/articles/6825453-chatgpt-release-notes)
- [OpenAI · Model release notes](https://help.openai.com/en/articles/9624314-model-release-notes)
- [Azure Foundry · lifecycle](https://learn.microsoft.com/en-us/azure/foundry/concepts/model-lifecycle-retirement?view=azureml-api-2)
- [models.dev · catalogue](https://models.dev/#databricks-gpt-5-1)
- [models.dev · catalogue](https://models.dev/#gpt-5-1)
- [models.dev · catalogue](https://models.dev/#gpt-5.1)
- [openai-articles](https://openai.com/index/gpt-5-1-for-developers)
- [Arena · leaderboards](https://openai.com/index/gpt-5-1/)
- [OpenAI · official articles · Introducing group chats in ChatGPT](https://openai.com/index/group-chats-in-chatgpt)
- [OpenAI · official articles](https://openai.com/index/introducing-gpt-5-2)
- [OpenCode · discovery](https://opencode.ai/data/openai/gpt-5-1)
- [OpenRouter](https://openrouter.ai/openai/gpt-5.1)
- [OpenRouter](https://openrouter.ai/openai/gpt-5.1:batch)
- [OpenAI · deprecations](https://platform.openai.com/docs/deprecations)
- [VoxelBench · leaderboard](https://voxelbench.ai/leaderboard)

## Segnali

- [GPT-5.1 avvistato su Arena](https://alexgetman.com/it/signals/2026/09/11/gpt-5-1/)