OpenAI: GPT-5.1
OpenAIenterprise
openai/gpt-5.1Description
GPT-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...
Specifications
Context Window
400,000
tokens
Max Completion Tokens
128,000
tokens
Input Modalities
imagetextfile
Output Modalities
text
Supported Parameters
include_reasoningmax_completion_tokensmax_tokensreasoningresponse_formatseedstructured_outputstool_choicetools
Pricing
| Price Type | Rate | Unit |
|---|---|---|
| Input (Prompt) | $0.000001 | per 1M tokens |
| Output (Completion) | $0.000010 | per 1M tokens |
| Cache Read | $0.000000 | per 1M tokens |
Tier Availability
Free
Not Available
Pro
Not Available
Enterprise
✓ Available