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GPT 5.1 Codex Mini

At a glance

Compact coding model for fast, cost-efficient development tasks.

400K ctx$0.25/$2.00 per M
Agent Demos
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AI Output
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Benchmarks
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Reasoning
CodingInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:Epoch AI·OpenRouter· as of 2026-07-10
Agentic
Terminal Tasks61.6%
Specs
400K
Context
100K
Max output
Nov 2025
Released
Capabilities
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input$0.25/M tokens
Output$2.00/M tokens
Cache read$0.02/M tokens
Web search$0.01/search
Chat with GPT 5.1 Codex MiniGo to model