# GPT-4.5

GPT-4.5 est un modèle de OpenAI, répertorié pour la première fois le 2026-10-07 ; sa date de sortie n'est pas confirmée.

- Éditeur: OpenAI
- Id: gpt-4.5
- Selon des informations: 2025-02-27T00:00:00.000Z
- Détection: 2026-10-07T18:13:28.058Z
  - [lien de référence](https://help.openai.com/en/articles/6825453-chatgpt-release-notes)
- Statut: Disponible
- Mise à jour du produit: 2025-02-27
  - [lien de référence](https://help.openai.com/en/articles/9624314-model-release-notes)
- Canonique: https://alexgetman.com/fr/models/openai/gpt-4-5/

## Questions

### Quand GPT-4.5 est-il sorti ?

La date de sortie n'est pas confirmée. Signal Forge a répertorié le modèle pour la première fois le 2026-10-07.

## Chronologie

- 2026-08-06T17:53:02.905Z · [Alex Getman](https://alexgetman.com/155/openai-is-launching-gpt-6-astra-next-week/)
> 🚨 OpenAI is launching GPT 6 Astra next week
> 
> It is a brand new model trained from scratch and the company’s largest since GPT 4.5. The latest internal build, codenamed mewfour, is already the release candidate.
Le calendrier prévu ne s’est pas confirmé ; conservé comme mention précoce, pas comme prédiction réussie.
- 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 June 26, 2026, GPT-4.5 is no longer available in ChatGPT, including for custom GPTs
- 2026-11-05T14:39:16.565Z · [OpenAI · Model release notes](https://help.openai.com/en/articles/9624314-model-release-notes)
> GPT-4.5 is available worldwide for users on the Pro plan in ChatGPT
- 2026-11-05T14:39:16.565Z · [OpenAI · Model release notes](https://help.openai.com/en/articles/9624314-model-release-notes)
- 2026-11-10T17:59:50.472Z · [GitHub · openai/openai-agents-python · code](https://github.com/openai/openai-agents-python/blob/d68961657843c7d81dfc25834484f8aac2957eb3/docs/scripts/translate_docs.py)
> mport ThreadPoolExecutor
> 
> # import logging
> # logging.basicConfig(level=logging.INFO)
> # logging.getLogger("openai").setLevel(logging.DEBUG)
> 
> OPENAI_MODEL = os.environ.get("OPENAI_MODEL", "gpt-5.6-sol")
> 
> ENABLE_CODE_SNIPPET_EXCLUSION = True
> # gpt-4.5 needed this for better quality
> ENABLE_SMALL_CHUNK_TRANSLATION = False
> 
> SEARCH_EXCLUSION = """---
> search:
>   exclude: true
> ---
> """
> 
> 
> # Define the source and target directories
> source_dir = "docs"
> REPO_ROOT = Path(__file__).resolve().parents[2]
> languages = {
>     "ja": "Japanese",
>     "ko": "Korean",
>     "zh": "Chinese",
>     # Add more languages here, e.g., "fr": "French"
> }
> 
> # Initialize OpenAI client
> api_key = os.getenv("OPENAI_API_KEY")
> openai_client = OpenAI(api_key=api_key)
> 
> # Define dictionaries for translation control
> do_not_translate = [
>     "OpenAI",
>     "Agents SDK",
>     "Hello World",
>     "Model context protocol",
>     "MCP",
> 
Cette référence dans le code ne confirme pas un identifiant de modèle utilisé.
- 2026-11-14T00:29:48.887Z · [OpenAI · official articles](https://openai.com/index/introducing-indqa)
- 2026-11-14T02:21:52.804Z · [OpenAI · official articles](https://openai.com/index/gpt-4-1)
> GPT‑4.5 Preview will be turned off in three months, on July 14, 2025, to allow time for developers to transition

## Liens de référence

- [Alex Getman](https://alexgetman.com/155/openai-is-launching-gpt-6-astra-next-week/)
- [GitHub · openai/openai-agents-python · code](https://github.com/openai/openai-agents-python/blob/d68961657843c7d81dfc25834484f8aac2957eb3/docs/scripts/translate_docs.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)
- [openai-articles](https://openai.com/index/gpt-4-1)
- [openai-articles](https://openai.com/index/introducing-indqa)

## Signaux