Flagship model optimized for coding and agentic tasks with configurable reasoning effort.
Modalities
Context window
400,000
Pricing
input / output per 1M
Reasoning
Streaming
Real-time token-by-token response streaming
Function calling
Connect the model to external tools and systems
Structured outputs
Return responses in JSON schema format
Web search
Search the internet for real-time information
File search
Search and retrieve from uploaded files
Code execution
Execute code in a sandboxed environment
Image generation
Generate images from text descriptions
| Knowledge cutoff | 2024-09-30 |
| Model ID | gpt-5.1 |
| Provider | OpenAI |
| Tier | RPM | TPM | Batch queue |
|---|---|---|---|
| Tier1 | 500 | 500,000 | 1,500,000 |
| Tier2 | 5,000 | 1,000,000 | 3,000,000 |
| Tier3 | 5,000 | 2,000,000 | 100,000,000 |
| Tier4 | 10,000 | 4,000,000 | 200,000,000 |
| Tier5 | 15,000 | 40,000,000 | 15,000,000,000 |