ModelBeat
Models/GPT-5.1-Codex-mini
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OpenAI: GPT-5.1-Codex-mini

CompareFind source
openai/gpt-5.1-codex-mini

GPT-5.1-Codex-Mini is a smaller and faster version of GPT-5.1-Codex

Context
400K
Input
$0.25 / 1M
Output
$2 / 1M
Released
Nov 12, 2025
Modalities
imagetext→text

Benchmarks

Scores on standardized evaluations. Higher is better — and rank shows where GPT-5.1-Codex-mini lands among all models tracked on Model Beat.

57.0
Intelligence Index
Epoch AI
57th percentile of tracked models
41.0
Coding Index
Epoch AI
41st percentile of tracked models
73.0
Agentic Index
Epoch AI
73rd percentile of tracked models

Coding

1 evals
WebDev Arena1247

Human-rated web development

Agentic & Tools

1 evals
Terminal-Bench61.6%

Command-line agentic tasks

Model & benchmark data from Epoch AI (CC BY); pricing, specs & descriptions from OpenRouter.