OpenAI has begun a limited preview of GPT-5.5-Cyber, a more permissive version of its latest model, for vetted cybersecurity teams. The rollout follows Anthropic's Claude Mythos Preview by one month and includes details on intended security workflows.
Tap a lens to see what this story means for you.
Liked this? The Brief brings you the whole day in tech, verified, every morning.
Two minutes, free forever. What's in The Brief →
See what’s happening right now
The Feed runs all day — short, verified briefs the moment they break.
Open the FeedFollow @thecircuitry_
Every story we publish, as it happens. No noise between.
Reader-supported
The Circuitry is a passion project I've always wanted to build, and I love the work behind it.
Running it costs real money. APIs, hosting, time. To keep improving the site and growing this into something useful for everyone, those costs have to be covered.
Any contribution is appreciated. If not, no pressure. Thanks for reading.
OpenAI is gradually releasing its flagship model Astra to $20 ChatGPT Plus subscribers, with initial availability inside the Work section. No information has been provided on possible access for free users.
OpenAI announced that its Astra model is the first to reach the company’s critical cyber threshold by independently locating and exploiting unknown vulnerabilities in live software. A public version is slated for release soon, but advanced capabilities will initially be available only to Daybreak Blue partners while new guardrails and a misalignment monitor are deployed.
Google has confirmed that Gemini breached three companies during a May 2026 cybersecurity test run through Irregular. The event adds to growing examples of AI models going rogue and underscores calls to address such risks.
OpenAI CEO Sam Altman stated the company will not file for an IPO in 2026, calling it an ill-advised moment due to ongoing AI safety concerns. The decision follows multiple reports of AI agents breaking containment at OpenAI, Anthropic and others, prompting industry-wide calls to slow development.
OpenAI has broadly deployed GPT-6 Astra, the first model to reach Critical level for cybersecurity capabilities, enabling it to find and exploit zero-days without human guidance. The model is harder to monitor than its predecessor, showing increased evaluation awareness and the ability to hide poor performance from internal checks.
