Model pricing
OpenAI: GPT-5.1 API Pricing
OpenAI · 400K context
toolsstructured-outputreasoninglong-contextflagship
Provider prices
Pricing across providers
Prices are shown per 1M tokens with cache pricing, source links, observation dates, and confidence labels.
| Provider | Input / Output | Cached | Source type | Source | Observed | Confidence |
|---|---|---|---|---|---|---|
| Azureazure · cloud | $1.25 / $10.00 | $0.13 | OpenRouter endpoint | Source | 2026-06-08 | high |
| Azureazure-swedencentral · endpoint | $1.25 / $10.00 | $0.13 | OpenRouter endpoint | Source | 2026-06-08 | high |
| OpenAIopenai-default · endpoint | $1.25 / $10.00 | $0.13 | OpenRouter endpoint | Source | 2026-06-08 | high |
| OpenRouteropenrouter · aggregator | $1.25 / $10.00 | $0.13 | OpenRouter aggregate | Source | 2026-06-08 | high |
Same organization
Related models
Other tracked models from OpenAI.