Labs · Friday, September 4, 2026
OpenAI introduces GPT-6 Astra; marks Critical cybersecurity tier
The File desk · Sep 4, 2026, 12:18 PM UTC
Status
Confirmed as OpenAI’s Sept. 3 launch post (Internet Archive capture; live openai.com returned 403), API docs, and system card. Company benchmark claims are OpenAI’s; not independently verified here.
- Confirmed
OpenAI’s Sept. 3, 2026, post “GPT-6 Astra: A new generation of intelligence” introduces GPT-6 Astra, says it is rolling out to a limited set of organizations and then to ChatGPT Plus, Pro, Business, and Enterprise and the API, Azure, and Bedrock, and says Astra meets the Critical cybersecurity threshold under its Preparedness Framework. The API page lists model id gpt-6-astra and Standard pricing of $10 per million input tokens and $50 per million output tokens. The system card, published Sept. 3, says Astra is OpenAI’s first model to reach that Critical cybersecurity level.
- Unverified
OpenAI’s benchmark tables (FrontierMath, ARC-AGI-3, ExploitBench, and others) are the company’s. This desk did not independently verify them.
On Thursday, Sept. 3, 2026, OpenAI published “GPT-6 Astra: A new generation of intelligence,” introducing GPT-6 Astra as its most intelligent and aligned model, with claimed state-of-the-art results on computer use, browsing, software engineering, cybersecurity, science, and professional work. The post says Astra is rolling out to a limited set of organizations and over coming days to ChatGPT Plus, Pro, Business, and Enterprise users, plus the OpenAI API, Microsoft Azure, and AWS Bedrock. API model id gpt-6-astra; Standard pricing cited as $10 per million input tokens and $50 per million output tokens. OpenAI’s system card says Astra is its first model to reach the Critical cybersecurity capability threshold under its Preparedness Framework. The launch post says the version launching that day will refuse more advanced cybersecurity tasks such as creating proof-of-concept exploits, with less-restrictive defensive access planned through OpenAI Daybreak. Anthropic’s newsroom still led by Sept. 1 Fable/Mythos 5.1. Google’s Gemini 3.8 Flash remains Thursday’s File AI item. Live openai.com returned 403 to this desk; the launch-post text is from an Internet Archive capture.
An Internet Archive capture of openai.com/index/gpt-6-astra/ (snapshot 20260904072121) opens: “We’re introducing GPT‑6 Astra, the world’s most intelligent and aligned model.” “Astra is state-of-the-art on computer use, browsing, software engineering, cybersecurity, science, and professional work.” “GPT‑6 Astra is rolling out today to a limited set of organizations 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.” The live URL returned HTTP 403 on this desk’s Friday morning fetch.
The same capture: “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.” OpenAI’s developers page, fetched live, matches that model id and Standard price ($10 input / $50 output per 1 million tokens) and says Astra “is rolling out today for enterprises in our Trusted Access Program, with access through API and our Plus, Pro, Business and Enterprise plans coming in the coming days.”
On cybersecurity, the launch post says Astra “meets the Critical threshold in cybersecurity under our Preparedness Framework.” It writes that with the version launching that day, “defenders can use it to complete tasks such as secure code review and patching.” “However, Astra will refuse to comply with more advanced cybersecurity tasks such as creating proof-of-concept exploits for vulnerabilities. Through OpenAI Daybreak, we plan to expand access and roll out less restrictive safeguards in the coming weeks.” This file does not restate OpenAI’s exploit-evaluation tables beyond labeling them company claims.
The GPT-6 Astra System Card on deploymentsafety.openai.com, published September 3, 2026, opens its safety overview: “Today, we are releasing GPT-6 Astra, the most capable model we have ever broadly deployed. Astra is our first model to reach the Critical level of cybersecurity capability under our Preparedness Framework.” The live safety-overview URL on openai.com returned 403; the same Critical-threshold wording is in this system card. Company eval numbers are OpenAI’s.
Anthropic’s newsroom, fetched Sept. 4, still leads with “Introducing Claude Fable 5.1 and Claude Mythos 5.1,” dated Sept. 1, 2026. Thursday’s File already carried Google’s Gemini 3.8 Flash launch.
What is still unknown or disputed
- Company eval numbers are OpenAI’s; not independently verified here.
- Live openai.com/index/gpt-6-astra/ and openai.com/index/safety-overview-gpt-6-astra/ returned HTTP 403 on this desk pass.
- Fairwind-style Daybreak acceptance criteria beyond the launch-post and system-card summary were not separately fetched.
Primary sources
Every claim in this story is drawn from the documents below. If a fetch failed, that is recorded on the card.
Source 1 · fetch incomplete
GPT-6 Astra: A new generation of intelligence
OpenAI · September 3, 2026
Live page returned HTTP 403 to this desk. See the Internet Archive capture of the same URL.
https://openai.com/index/gpt-6-astra/
Source 2
GPT-6 Astra: A new generation of intelligence (Internet Archive capture)
Internet Archive / OpenAI · September 3, 2026
We’re introducing GPT‑6 Astra, the world’s most intelligent and aligned model. Astra is state-of-the-art on computer use, browsing, software engineering, cybersecurity, science, and professional work. GPT‑6 Astra is rolling out today to a limited set of organizations 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. OpenAI API Standard pricing is $10 per million input tokens and $50 per million output tokens. Astra meets the Critical threshold in cybersecurity under our Preparedness Framework. However, Astra will refuse to comply with more advanced cybersecurity tasks such as creating proof-of-concept exploits for vulnerabilities. Through OpenAI Daybreak, we plan to expand access and roll out less restrictive safeguards in the coming weeks.
https://web.archive.org/web/20260904072121/https://openai.com/index/gpt-6-astra/
Source 3 · fetch incomplete
Safety overview: GPT-6 Astra
OpenAI · September 3, 2026
Live page returned HTTP 403. The system card’s opening safety overview states Astra is OpenAI’s first model to reach the Critical cybersecurity capability under its Preparedness Framework.
https://openai.com/index/safety-overview-gpt-6-astra/
Source 4
GPT-6 Astra System Card
OpenAI Deployment Safety Hub · September 3, 2026
Published September 3, 2026. Today, we are releasing GPT-6 Astra, the most capable model we have ever broadly deployed. Astra is our first model to reach the Critical level of cybersecurity capability under our Preparedness Framework.
https://deploymentsafety.openai.com/gpt-6-astra
Source 5
GPT-6 Astra Model | OpenAI API
OpenAI Developers · September 3, 2026
GPT‑6 Astra is rolling out today for enterprises in our Trusted Access Program, with access through API and our Plus, Pro, Business and Enterprise plans coming in the coming days. Model id gpt-6-astra. Price $10 • $50 Input • Output. Per 1M tokens Input $10.00.
https://developers.openai.com/api/docs/models/gpt-6-astra
Source 6
Anthropic Newsroom (checked)
Anthropic · September 4, 2026
Top announcement remains Introducing Claude Fable 5.1 and Claude Mythos 5.1 (Sep 1, 2026).
https://www.anthropic.com/news