Chat model · OpenAI ·
GPT-6 Astra is a chat model by OpenAI. In Endless it costs 1215 credits per 1M input tokens and 5062.5 per 1M output tokens, on every plan.
GPT-6 Astra is OpenAI's most capable model, built for deep research, complex coding and computer use when accuracy matters more than cost.
GPT-6 Astra opened OpenAI's GPT-6 generation in September 2026 and is the company's highest-intelligence model. It is built for complex reasoning, coding, computer use, research and document creation, with a sharper grasp of what you actually intend. When the answer could change depending on a detail you left out, Astra asks a focused question before committing. It reads text and images and holds 1.05M tokens of context.
Teams reserve it for problems where a wrong answer is expensive: a research question that needs many sources reconciled, an architecture decision that spans a large codebase, or a long report that has to stay consistent from the first section to the last. It writes up to 128K tokens in a single response, enough for full documents and large code changes.
Astra is the top of the GPT-6 family in Endless. GPT-6.1 Sol comes close to it on coding and professional work at a lower cost, and GPT-6 Luna handles quick, high-volume requests. You can start a hard task on Astra and move routine follow-ups to Sol or Luna without leaving your workspace.
Start a chat in your workspace and choose GPT-6 Astra in the model picker.
Attach files, mention a project with @, or ask it to search the web and social media.
Generate images and video, write documents and save what matters to a project.
by OpenAI
Near-flagship agentic coding and professional work at lower cost
162 / 810 credits per 1M tokens
by OpenAI
Long, complex coding sessions with deep reasoning
324 / 1620 credits per 1M tokens
by OpenAI
Fast, low-cost answers for focused, high-volume tasks
8.1 / 40.5 credits per 1M tokens
Start free, create a project, and bring your brand’s references together. Or book a demo to explore Endless with your team.