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GPT-5.1 Codex mini (high)

New in 2026

Developed by OpenAI

API Pricing (per 1M tokens)

Input$0.25
Output$2.00

Intelligence Benchmarks

MMLU Pro82.0%
GPQA81.3%
Intelligence Index38.5
LivebenchN/A

Technical Specifications

Context Window400K Tokens
Vision SupportYes
Tokens per Second149
Time to First Token (s)11.62
Modalities
textimagefile->text
GPT-5.1 Codex mini (high) Pricing, Context Window, and Benchmarks 2026