Chat

GPT-5.1 Codex Mini

openai

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

Try Now

Capabilities

Image Input

Extended Thinking

Tool Use

Example Use Cases

Quick code generation

Lightweight coding tasks

Fast code review

Technical Specifications

Context Window

400,000 tokens

Max Output

100,000 tokens

Pricing

Token Costs (per 1M tokens)

Cache Miss Input

$0.25

Non-Reasoning Output

$2

Cache Read Input

$0.025

Tool Costs (per 1K calls)

Web Search

$15

Code Execution

$0.19

⚠️ Legacy

Made legacy on

Reason

Untested

Recommended Replacement

Qwen3.5 Plus