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GPT-5.1 Codex Mini

Cost-effective smaller version of GPT-5.1 Codex

Overview

Cost-effective smaller version of GPT-5.1 Codex

Key Capabilities

Code Generation — suited for tasks requiring code generation proficiency
Code Completion — suited for tasks requiring code completion proficiency
Quick Fixes — suited for tasks requiring quick fixes proficiency

Recommended Use Cases

Quick Code Tasks
Syntax Conversion
Code Completion

Technical Specifications

Context Window: 128K tokens
Max Output Tokens: 33K tokens
Open Weight: No
Release Date: November 15, 2025

Pricing

$3/M input tokens, $12/M output tokens

Provider

GPT-5.1 Codex Mini is developed by OpenAI. For the latest information, visit the official documentation.