About
GPT-5.1-Codex-Mini is a smaller and faster version of GPT-5.1-Codex
Related Models
Pricing
Input
$0.25
per 1M tokens
Output
$2.00
per 1M tokens
Blended
$0.69
per 1M tokens
Cheaper than 46% of models. Median price is $0.54/1M tokens.
Cost Calculator
Tokens per day1M
100K100M
Daily
$0.69
Monthly
$20.63
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$0.21-69%
Claude 4 Sonnet (Reasoning)Q:+0.1
$6.00+773%
Performance
216
tokens/sec
Faster than 89% of models
3.33
seconds
Faster than 19% of models
3.33
seconds
Faster than 49% of models
Market Median
94 tok/s
129% faster
Median TTFT
1.11s
199% slower
Throughput/Dollar
315
tok/s per $/1M
Speed Comparison
Gemini 3 Flash Preview (Reasoning)
215 tok/s-1%
NVIDIA Nemotron Nano 12B v2 VL (Non-reasoning)
219 tok/s+1%
Nova 2.0 Omni (Non-reasoning)
219 tok/s+1%
Context Window
400K
tokens
Larger than 76% of models
Max Output
100K
tokens
25% of context
Benchmarks
MMLU-Pro
82.0%
GPQA Diamond
81.3%
HLE
16.9%
LiveCodeBench
83.6%
SciCode
42.6%
TerminalBench Hard
33.3%
MATH-500Not evaluated
AIMENot evaluated
AIME 2025
91.7%
IFBench
67.9%
Long Context Recall
62.7%
Tau2
62.9%
Market AverageTop Score