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Created by

openai

ReleasedNov 12, 2025

GPT-5.1-Codex is a version of GPT-5.1 optimized for agentic coding tasks in Codex or similar environments.

Limits

Context Length400K

Max Output Tokens128K

Pricing

Pricing (Input)$1.25/M

Pricing (Output)$10.00/M

Caching

Input Modalities

Text

Image

PDF

Audio

Output Modalities

Text

Image

Audio

Features

Reasoning

Tools

Temperature

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