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GPT-5.1 Chat
gpt-codex
Chat-tuned GPT-5.1 for polished assistants, writing, and product conversations
- Family
- gpt-codex
- Providers
- 2
- Context
- 128,000
- Output
- 16,384
- Knowledge
- 2024-09-30
- Weights
- Closed
- Input
- textimage
- Output
- text
- Release date
- 2025-11-13
- Updated
- 2025-11-13
Providers
Source: models.dev