openai/gpt-5.1-chat
GPT-5.1 Chat (AKA Instant is the fast, lightweight member of the 5.1 family, optimized for low-latency chat while retaining strong general intelligence. It uses adaptive reasoning to selectively “think” on...
| Provider | In $/M | Out $/M | Context | Uptime |
|---|---|---|---|---|
| Azurecache | $1.25 | $10.00 | 128K | — |
| OpenAIcache | $1.25 | $10.00 | 128K | 100% |
GPT-5.1 Chat costs $1.25 per million input tokens and $10.00 per million output tokens via OpenRouter, making it 224th cheapest of 298 paid models.
GPT-5.1 Chat generates around 61 tokens per second with 1.1s time-to-first-token (p50), the 140th fastest tracked model.
GPT-5.1 Chat supports a 128K-token context window and can output up to 32K tokens. It accepts file, image, text input.