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GPT-5.1
openai/gpt-5.1
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Organization
OpenAI
Family
GPT
Released
2025-11-13
Context window
400K
Max output
128K
Input
Image
Text
Output
Text
Providers
OpenRouter, OpenAI
Price
IN
$1.25
OUT
$10
Weights
Closed
Attachments
Native
Reasoning
Native
Tool call
Native
Structured
Native
Temperature
-
Open weight
-
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