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GPT-5.1 (high)

New in 2026

Developed by OpenAI

API Pricing (per 1M tokens)

Input$1.25
Output$10.00

Intelligence Benchmarks

MMLU Pro87.0%
GPQA87.3%
Intelligence Index47.6
LivebenchN/A

Technical Specifications

Context Window400K Tokens
Vision SupportYes
Tokens per Second110
Time to First Token (s)38.51
Modalities
textimagefile->text
GPT-5.1 (high) Pricing, Context Window, and Benchmarks 2026