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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 Pro
82.0%
GPQA
81.3%
Intelligence Index
38.5
Livebench
N/A
Technical Specifications
Context Window
400K Tokens
Vision Support
Yes
Tokens per Second
149
Time to First Token (s)
11.62
Modalities
text
image
file->text
GPT-5.1 Codex mini (high) Pricing, Context Window, and Benchmarks 2026