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OpenAI: GPT-5.1-Codex-Mini

OpenAI: GPT-5.1-Codex-Mini is openai's model. It is not yet scored on the meo first-party benchmark; aggregated third-party results and OpenRouter metadata are shown below.

Aggregated third-party benchmarks

BenchmarkValueSource
AA Coding Index36artificial_analysis
AA Intelligence Index39artificial_analysis
AA Math Index92artificial_analysis
AIME 202591.7%artificial_analysis
GPQA Diamond81.3%artificial_analysis
Humanity's Last Exam16.9%artificial_analysis
IFBench67.9%artificial_analysis
LCR (long-context reasoning)62.7%artificial_analysis
LiveCodeBench83.6%artificial_analysis
MMLU-Pro82.0%artificial_analysis
SciCode42.6%artificial_analysis
τ²-bench62.9%artificial_analysis
Terminal-Bench Hard33.3%artificial_analysis
Median output throughput (tokens/s)219artificial_analysis
Median time to first token (s)4.09artificial_analysis

Artificial Analysis (artificialanalysis.ai). Redistribution requires an AA commercial license.

Model details

Lab
openai
Released
2025-11-13
Weights
—
Context
400K
Max output
100K
Knowledge cutoff
—
Price in
$0.25/M
Price out
$2.00/M
Modality
text+image->text
View on OpenRouter ↗

Sources: openrouter · artificial_analysis

FAQ

Is OpenAI: GPT-5.1-Codex-Mini open weights?

Open-weights status for OpenAI: GPT-5.1-Codex-Mini is not recorded.