Overview
GPT-5.5 is OpenAI’s frontier model designed for complex professional workloads, building on GPT-5.4 with stronger reasoning, higher reliability, and improved token efficiency on hard tasks.
GPT-5.5 is available in OmnyChat. 1,050,000 token context window. Image input. Reasoning mode.
Key capabilities
- 1,050,000 token context window
- Image input
- Reasoning mode
Using this model
In OmnyChat
Use GPT-5.5 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-5.5?
Open chat in OmnyChat and select GPT-5.5. Model access and usage depend on your plan.
What does GPT-5.5 support in OmnyChat?
1,050,000 token context window. Image input. Reasoning mode.