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openaiOpenAI: GPT-5.1
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...
openai/gpt-5.1
Context Size
400K
Input Price
187,500 pts/M
Output Price
1,500,000 pts/M
Architecture
Image
Text
File
Supported Parameters
include_reasoningmax_completion_tokensmax_tokensreasoningresponse_formatseedstructured_outputstool_choicetools
Details
TokenizerGPT
Max Completion128,000 tokens
Provider Context400K tokens
ModeratedNo
CreatedNov 13, 2025