GPT-6 Astra: The Flagship Reasoning Model of GPT-6
OpenAI’s flagship reasoning model for hard problems and long documents
GPT-6 Astra is the flagship reasoning model of OpenAI’s GPT-6 family, the one behind Pro reasoning in the ChatGPT Pro plans. It is built for hard reasoning, math and analysis that needs careful thought, and it can read very long documents. You can set the thinking effort from low to max: higher settings think longer and answer in more depth.
On CherryChat it reads images and searches the web automatically when needed. It usually takes a while to answer, so it suits work where accuracy matters more than speed. It does not support tool use; to create Word, Excel or PowerPoint files, switch to GPT-6.1 Sol.
Available on CherryChat; not an official OpenAI product.
Good for
- Math, logic and hard reasoning
- Research and analysis that needs careful thought
- Very long reports, papers and contracts
Not ideal for
- Quick questions that need an instant answer
- Creating Word, Excel or PowerPoint files directly
Using it on CherryChat
- Provider: OpenAI
- Price: Input 3 · Output 12 credits/1K tokens
- Context: 400k
- Capabilities: Vision · Reasoning
Comparisons
- Claude vs ChatGPT: Which One Fits Your Work?
- Gemini vs ChatGPT: Which One Fits Your Work?
- Grok vs ChatGPT: Which One Fits Your Work?
- DeepSeek vs ChatGPT: Which One Fits Your Work?
Similar models
Operated by UK Company CHERRYCHAT LTD · Company Number 16096119 · Support WeChat: JsnonoChat · Content is AI-generated — please verify before relying on it
