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OpenAI: GPT-5.1
openai/gpt-5.1
VisionTool useJSONReasoningStreaming
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...
Pricing
Input
$1.25 / 1M
Output
$10.00 / 1M
Specs
Context
400,000 tokens
Input
image, text, file
Output
text
Released: 2025-11
Supported parameters
include_reasoningmax_completion_tokensmax_tokensreasoningresponse_formatseedstructured_outputstool_choicetools