This is GPT-6 Astra.
Anything you can do on a computer, Astra can do for you. Fast.
OpenAI released GPT-6 Astra on 3 September, and the capability it leads with is the computer rather than the chat window: filling in online forms, updating records in a CRM, organising a calendar, running research and drafting it into your email or document editor, building a site and then checking the features on it work. The speed claim in the post has numbers behind it in OpenAI's own write-up, 72.6% on OSWorld 2.0 at around 40 minutes a task against GPT-5.6 Sol's 65.7% at around 75, and 1.9x faster completion on Mind2Web once the updated Codex harness is counted. It reaches a limited set of organisations first and Plus, Pro, Business and Enterprise over the coming days, with the API at $10 per million input tokens and $50 per million output, and a Fast mode at twice that price for up to twice the speed. One line matters if you are building on it: OpenAI says Astra meets the Critical cybersecurity threshold in its own Preparedness Framework, so it ships with checks that can pause a task in ChatGPT or Codex and stop it outright in the API, and it will refuse work like writing proof-of-concept exploits until access is widened. A lot of the founders on eChai run their week through a browser and a spreadsheet, which is the work this is pointed at.
This is GPT-6 Astra.
Anything you can do on a computer, Astra can do for you. Fast.
Vaibhav Srivastav is at OpenAI, and was at Hugging Face before that, so this is written from inside the team that shipped the model. The five lines in the middle are the part to keep: what to change in your own prompts and AGENTS.md now that Astra follows instructions more closely than the model before it.
GPT-6 Astra is now available to all Pro, Enterprise and Business Premium users in ChatGPT Work and Codex. It’s also live in the API.
It's a phenomenal model and I love every second working with it!
Astra follows instructions more closely, so revisit your prompts and skills:
> Make “can you…” mean “do it”: finish authorised work and prepare a reviewable result before seeking approval.
> Audit AGENTS.md and skills. Ask it to identify the exact file and rule blocking progress. Prioritise your request over skill guidelines.
> Specify short paragraphs, plain language and phrases to avoid.
> Ask for subagents on independent work when it improves speed or quality.
> Run relevant checks. Repeat or expand only for changes, failures or unresolved concerns.
To push it to it's limits, I gave it a prompt to build a real-scale video fly through of nürburguring track in blender and it did not disappoint!
Enjoy! ✨
Miguel Ángel is a product engineer at HeyGen, and HyperFrames is HeyGen's own product, so this is the model being used on the thing he builds all day.
Astra is too good making @HyperFrames_ videos!
Astra is so cracked at Blender.
You can literally one-shot game assets with it.