GPT-5.1 Chat
GPT-5.1 Chat by OpenAI — specifications, pricing and published benchmark scores, with community links.
| Organization | OpenAI |
|---|---|
| Released | 2025-11-13 |
| Open weights | No |
| Context window | 128,000 tokens |
| Modality | text, image |
| Input price | Self-host / varies |
| Output price | Self-host / varies |
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