GPT-5.1 Chat
active Active
GPT-5.1 Chat is an active OpenAI LLM API model. As of May 24, 2026 it has no announced deprecation or retirement date.
Lifecycle & specs
- Provider
- OpenAI
- API model ID
gpt-5.1-chat- Status
- active
- Released
- Nov 13, 2025
- Context window
- 128,000 tokens
- Input price
- $1.25 / 1M tokens
- Output price
- $10.00 / 1M tokens
- Pricing checked
- May 22, 2026
Source: official OpenAI documentation ↗ · pending verification