GPT-5.1
AvailableGPT-5.1 is the latest frontier-grade model in the GPT-5 series, offering stronger general-purpose reasoning, improved instruction adherence, and a more natural conversational style compared to GPT-5. It uses adaptive reasoning...
- Context
- 400K tokens
- Max output
- 128K tokens
- Input / 1M tokens
- $1.25per 1M tokens
- Output / 1M tokens
- $10.00per 1M tokens
- Listed since
- Nov 13, 2025
Prices and model data from OpenRouter
Where it's availableProviders · 1
| Provider | Input / 1M tokens | Output / 1M tokens | Status |
|---|---|---|---|
| OpenRouter | $1.25 | $10.00 | Available |
Published benchmark results
From independent leaderboards, each credited to its publisher.