OpenAI: GPT-5.1-Codex-Mini

openai/gpt-5.1-codex-mini

85th smartest of 182ReasoningToolsJSONVision

Use via OpenRouter ↗

Intelligence

30.6

85th of 182

Design Elo

1135

Website

Speed

—

tokens/sec

Latency

—

first token

Input price

$0.250

117th cheapest

Context

400K

128K max out

How it compares

Smarter than53%

of all ranked models

Cheaper than65%

of all ranked models

Overview

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

Benchmarks

independent · Artificial Analysis & Design Arena

Artificial Analysis76th percentile

Intelligence Index

30.6

GPQA Diamond

81%

Humanity's Last Exam

17%

SciCode

43%

Tau²-Bench (agentic)

63%

Design Arena · Elo22,471 tournaments

Website

1135

Data Viz

1126

1045

svg

1026

Providers & pricing (1)

Provider	In $/M	Out $/M	Context	Uptime
Azurecache	$0.250	$2.00	400K	100%

Specifications

Context window400K

Max output128K

Knowledge cutoff—

Input modalitiesimage, text

Output modalitiestext

Prompt cachingSupported

Cache read price$0.030/M

ModeratedNo

GPT-5.1-Codex-Mini FAQ

How much does GPT-5.1-Codex-Mini cost?

GPT-5.1-Codex-Mini costs $0.250 per million input tokens and $2.00 per million output tokens via OpenRouter, making it 117th cheapest of 332 paid models.

How smart is GPT-5.1-Codex-Mini?

GPT-5.1-Codex-Mini scores 30.6 on the Artificial Analysis Intelligence Index, ranking 85th of 182 benchmarked models, with a GPQA Diamond score of 81%.