OpenAI · GPT-6
GPT-6 Astra
OpenAI’s flagship for demanding research, coding and computer-use work. Plus includes Astra in ChatGPT Work and Codex; GPT-6 Pro in Chat is available on Pro $100, Pro $200, Business and Enterprise, subject to workspace access. OpenAI also lists the API, Microsoft Azure and AWS Bedrock.
Start here
- What this helps you do
- Decide whether GPT-6 Astra is the right model for a job you have, or one to leave alone.
- What you leave with
- A plain read of what GPT-6 Astra is for, what to avoid giving it, and the facts behind that.
- What to check before trusting it
- Access depends on plan, workspace permissions and surface; Plus includes Astra in Work and Codex, while GPT-6 Pro in Chat has narrower plan access.
Treat the capability claim as a reason to test, not to delegate. OpenAI’s launch comparison includes both Claude Fable 5 and Fable 5.1; its benchmark scores remain vendor-reported. Run one real task beside another flagship and keep a human checkpoint on anything you could not easily undo.
Use it for
- Research, coding and computer-use work that runs several steps on its own
- Document, spreadsheet and presentation work with a clear acceptance check
- Long-running agentic tasks where a person still owns the result
Do not reach for it where the missing piece is your own source, judgement or sign-off rather than more capability, and do not read “can do anything you can do on a computer” as permission to hand over work you cannot check.
Effort without the jargon
The API exposes adjustable reasoning effort at low, medium, high, xhigh and max; start at a sensible middle level and raise it only when the task, not an unclear prompt, is why a shallower pass failed.
Advanced recordCost, limits, privacy and operations
Compare the total cost of your real task, including cache behaviour and long prompts, rather than treating the headline token rate as the whole bill.
- API cost
- Officially disclosedOpenAI API price: US$10 per million input tokens and US$50 per million output tokens, with cached input at US$1 and cache writes at US$12.50 per million tokens. Prompts above 272,000 input tokens use 2x input and cache rates and 1.5x output rates for the full request.
- Context window
- Officially disclosed1,050,000 tokens
- Maximum output
- Officially disclosed128,000 tokens
- Knowledge cutoff
- Officially disclosed30 April 2026
- Recorded inputs
- Text · Images
- Recorded output
- Text
Data handling is a product decision
Depends on surfaceRetention and training rules belong to the ChatGPT plan, API account and workspace, not the model name alone. Astra is offered across ChatGPT, the OpenAI API and cloud platforms, which are different surfaces; check the exact one before adding sensitive material.
Operational constraints
- Access depends on plan, workspace permissions and surface; Plus includes Astra in Work and Codex, while GPT-6 Pro in Chat has narrower plan access.
- Benchmark scores and the most-intelligent framing are vendor self-reported and were not independently replicated at review time; treat them as claims.
- OpenAI rates Astra at the Critical cybersecurity capability level under its Preparedness Framework; review security and human approval boundaries before broad use.
- OpenAI names Microsoft Azure and AWS Bedrock as cloud surfaces; platform-specific access and terms still apply.
Record details
- Evidence readiness
- informational
- Guidance confidence
- moderate
- Evidence revision
- gpt-6-astra@v1
Unknown means the cited official record does not disclose a safe value. It is not an estimate. Prices are provider list prices in USD where stated and can change before this record's review date.
Keep the evidence separate
OpenAI describes GPT-6 Astra as its most intelligent and aligned model and says anything you can do on a computer, Astra can do for you, aimed at research, coding, computer use and long-running agentic work. It also says Astra is the first model it has rated at the Critical cybersecurity capability level under its Preparedness Framework, which was the stated reason the initial rollout was phased.
No sufficiently useful independent note has been added yet. That absence is not filled with our guess.
No Human Bit result is claimed; use this as evaluation guidance only.
Not scheduled
No Human Bit result is claimed for this model yet.
Reviewed comparisons that include GPT-6 Astra
A detailed guide to longer AI work across files, apps, research and finished deliverables, with practical permission boundaries, approval points and recurring workflow examples.
Model comparisonGPT-6 Astra vs Claude Fable 5.1A dated comparison of GPT-6 Astra and Claude Fable 5.1 for demanding professional work. They now share the same headline token price, so the decision moves to cache economics, how much each will attempt on its own, and the task-level test that should settle it.