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GPT-5.1

openai/gpt-5.1openai

OpenAI's next-generation flagship model optimized for agent workflows.

Context
400,000
≈ 400K
Max output
128K
128,000
Price ($/1M tokens)
—

Specs

Input
TextImage
Output
Text
Reasoning
Yes
Tool call
Yes
Structured
Yes
Weights
Unknown
Released
2025-11-13
Free on relays
1

Free on relays (1)