Today, OpenAI has officially introduced its latest GPT-6 Astra model that brings together years of research and big bets across pre-training, reinforcement learning, and alignment.
This is GPT-6 Astra.
Anything you can do on a computer, Astra can do for you. Fast. pic.twitter.com/gDd0IsewJw
— OpenAI (@OpenAI) September 3, 2026
GPT-6 Astra
Astra is state-of-the-art in computer use, browsing, software engineering, cybersecurity, science, and professional work. As per OpenAI, Astra is its most aligned model, with substantial improvements in understanding user intent and model behaviour.
GPT‑6 Astra marks a new frontier in the speed, accuracy, and safety of computer use. It can take care of tedious tasks like filling out online forms, updating customer records in a CRM, and organising your calendar. It can conduct online research and draft summaries in your email or in your document editor. It can analyse scientific data, generate plots, create a website, and run frontend QA checks to make sure all the features on that site work. It can help you autonomously install and test software, and troubleshoot problems you see on screen.
In latency simulations on OSWorld 2.0, Astra achieves higher computer-use performance in about 47% less time per task than GPT 5.6 Sol, scoring 72.6% at roughly 40 minutes per task, compared with 65.7% at roughly 75 minutes.
The new model pairs advances in computer use with targeted training for professional environments to help tackle complex work tasks. It creates clear, well-structured documents, presentations, spreadsheets, and analyses that follow your templates and match your writing and visual style. Astra is also trained to specifically pull only the context that matters into outputs, instead of repeating information unnecessary for the work at hand.
With Sites in ChatGPT, Astra can create, host, and share websites, web apps, and games directly from a prompt. Astra uses context to fill in routine gaps and asks focused questions when the answer could change the outcome. In Codex, it can ask asynchronously while continuing work that doesn’t depend on your reply. If you don’t respond, it proceeds with sensible assumptions where appropriate, but waits for your input on consequential decisions.
According to OpenAI, GPT-6 Astra is the best model for software engineering to date. It is a major advance for scientific discovery, mathematics, and health.
Also, in Codex, Astra can keep notes across context windows, preserving accumulated details without repeatedly compressing them into a single summary.
Coming to cybersecurity, Astra is a significant jump in cyber capabilities and meets the Critical threshold in cybersecurity under OpenAI’s Preparedness Framework. On ExploitBench, Astra achieved a perfect score of 100% compared with 78.5% for GPT 5.6-Sol. On ExploitGym, Astra reached a 42.4% success rate, compared with 30.3% for GPT 5.6- Sol, while using substantially fewer output tokens.
Astra was also tested on SRE-Bench (which measures whether models can reverse engineer software binaries to understand their core logic without access to raw source code). Astra solved 88% of tasks in a single attempt and 99.2% within four attempts, compared with 55.9% and 68.7% for GPT 5.6-Sol, respectively.
Expert-led assessments found that Astra, when run without production safeguards, could use previously unknown vulnerabilities to achieve arbitrary code execution in hardened browsers and create privilege-escalation exploits for hardened operating systems.
Astra excels at exercising care, respecting task boundaries and communicating transparently. In sensitive environments, Astra proceeds with care commensurate with its risk. Given the significant increase in Astra’s cybersecurity capabilities, OpenAI is being especially careful to make this deployment safe and secure. Extra safety checks can sometimes slow, pause, or stop legitimate work, including defensive cybersecurity. Though, the company is continuing to iterate on this system to reduce unnecessary interruptions.
Availability
GPT-6 Astra is rolling out to a limited set of organisations and over the coming days will become available to all ChatGPT Plus, Pro, Business, and Enterprise users, as well as through the OpenAI API, Microsoft Azure, and AWS Bedrock.
Astra usage is included within the existing subscription allowances; users and businesses will also be able to purchase credits for additional usage. Users on the Pro, Business, and Enterprise plans will also get access to GPT-6 Astra Pro. Enterprise administrators can enable Astra for their workspace; access is off by default at launch.
Astra supports Zero Data Retention for eligible API customers. For developers, GPT-6 Astra will be available in the OpenAI API as gpt-6-astra and through Microsoft Azure and Amazon Bedrock.
OpenAI API standard pricing is $10 per million input tokens and $50 per million output tokens. Fast mode is available for GPT-6 Astra in the API and delivers up to 2x the speed of Standard processing at 2x the standard price.
