Overview
GPT-5.1 is the latest frontier-grade model in the GPT-5 series, offering stronger general-purpose reasoning, improved instruction adherence, and a more natural conversational style compared to GPT-5.
GPT-5.1 is available in OmnyChat. 400,000 token context window. Image input. Reasoning mode.
Key capabilities
- 400,000 token context window
- Image input
- Reasoning mode
Using this model
In OmnyChat
Use GPT-5.1 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?
Open chat in OmnyChat and select GPT-5.1. Model access and usage depend on your plan.
What does GPT-5.1 support in OmnyChat?
400,000 token context window. Image input. Reasoning mode.