AI Models & Assistants / Knowledge library

GPT-5.1-Codex

A version of GPT-5.1 optimized for agentic coding in Codex.

AI Workbench · sourced catalog

Why learn GPT-5.1-Codex?

Offers the documented OpenAI model capabilities through hosted.

The problem it solves

Provides model inference for supported text / image inputs.

Where it came from

GPT-5.1-Codex: A version of GPT-5.1 optimized for agentic coding in Codex. Published aliases: gpt-5.1-codex. Input: text, image. Output: text. Checked 2026-10-13. Model capabilities are distinct from tools available in a particular agent.

Build your understanding

Work through these exercises in order. Try the task before opening a reference.

1. Explain what GPT-5.1-Codex does.
2. Identify a use case for GPT-5.1-Codex.
3. Describe a limitation of GPT-5.1-Codex.
4. Name a compatible tool for GPT-5.1-Codex.
5. Compare GPT-5.1-Codex against an alternative.

Documentation and sources

• Primary source / model card (developers.openai.com)

Catalog research notes

• See the AI Workbench for source dates, pricing evidence and configuration details.

Connect the ideas

Built on

Catalog source: technology-maxxing. This page reproduces the existing catalog’s learning material and source links.