Overview
GPT-5.1-Codex is a specialized version of GPT-5.1 optimized for software engineering and coding workflows.
GPT-5.1-Codex is available in OmnyChat. 400,000 token context window. Image input.
Key capabilities
- 400,000 token context window
- Image input
Using this model
In OmnyChat
Use GPT-5.1-Codex in OmnyChat and compare its results with other language models on the same task.
Best for: Chat and comparing answers on your own prompts.
Frequently asked questions
How do I use GPT-5.1-Codex?
Open chat in OmnyChat and select GPT-5.1-Codex. Model access and usage depend on your plan.
What does GPT-5.1-Codex support in OmnyChat?
400,000 token context window. Image input.