GPT-6 Astra
The largest GPT-6, at five times the price of GPT-6 Sol.
A model a workspace can run · gbrain.io
OpenAI
GPT-6 Astra
The largest GPT-6, at five times the price of GPT-6 Sol.
- Vendor
- OpenAI
- Released
- Aug 2026
- Model id
- gpt-6-astra
GPT-6 Astra is the largest model in OpenAI’s GPT-6 line. It costs five times what GPT-6 Sol costs on both input and output, and it holds about a million tokens of context.
It reasons before it answers. Reach for it when the work is hard enough to be worth the price. For most day-to-day work, GPT-6 Sol is the better trade.
Best for: the hardest reasoning and long, many-step work on OpenAI.
Pick it per workspace from the model settings and switch any time. Inference is included in the plan, or bring a key of the team's own.