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Anthropic· 2025-10-06 17:15
It’s called Petri: Parallel Exploration Tool for Risky Interactions. It uses automated agents to audit models across diverse scenarios.Describe a scenario, and Petri handles the environment simulation, conversations, and analyses in minutes.Read more: https://t.co/inztNkrXMh ...
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Anthropic· 2025-10-06 17:15
Last week we released Claude Sonnet 4.5. As part of our alignment testing, we used a new tool to run automated audits for behaviors like sycophancy and deception.Now we’re open-sourcing the tool to run those audits. https://t.co/cCJGNaVFrl ...
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Anthropic· 2025-10-03 19:45
We’re at an inflection point in AI’s impact on cybersecurity.Claude now outperforms human teams in some cybersecurity competitions, and helps teams discover and fix code vulnerabilities.At the same time, attackers are using AI to expand their operations. https://t.co/odoTuPpJXe ...
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Anthropic· 2025-10-03 19:45
We’ve focused on improving Claude’s skills in defensive cybersecurity. The results of this are visible in Claude Sonnet 4.5, which is comparable or superior to Opus 4.1 in cybersecurity tasks—yet both faster and cheaper.Read more: https://t.co/hwjRuOhlfJ ...
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Anthropic· 2025-09-30 18:52
New on the Anthropic Engineering Blog: Most developers have heard of prompt engineering. But to get the most out of AI agents, you need context engineering.We explain how it works: https://t.co/PpMTiT7AEG ...
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Anthropic· 2025-09-30 14:24
RT Jack Clark (@jackclarkSF)We applaud @CAgovernor for signing @Scott_Wiener's SB 53, establishing transparency requirements for frontier AI companies that will help us all have better data about these systems and the companies building them. Anthropic is proud to have supported this bill. ...
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Anthropic· 2025-09-29 16:57
RT Claude (@claudeai)Introducing Claude Sonnet 4.5—the best coding model in the world.It's the strongest model for building complex agents. It's the best model at using computers. And it shows substantial gains on tests of reasoning and math. https://t.co/7LwV9WPNAv ...
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Anthropic· 2025-09-26 17:30
Chris Ciauri is joining Anthropic as our Managing Director of International.He joins during a period of rapid global expansion for Anthropic, as we triple our international headcount across Dublin, Tokyo, London, and Zurich.Read more: https://t.co/SeFIXPd53x ...
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Anthropic· 2025-09-24 17:44
Claude Sonnet 4 and Opus 4.1 are now available in Microsoft 365 Copilot, bringing Claude’s advanced reasoning capabilities to millions of enterprise users.Read more: https://t.co/3UTzA9A2Yk ...
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Anthropic· 2025-09-23 23:34
We're partnering with Learning Commons from the Chan Zuckerberg Initiative—addressing some of the biggest challenges we hear about from K–12 teachers about AI in the classroom: https://t.co/m3A2eQYbUzChan Zuckerberg Initiative (@ChanZuckerberg):Fall is here 🍎 and we’re sharing big AI releases:✔️ Knowledge Graph✔️ Knowledge Graph’s Claude Connector✔️ EvaluatorsWith tools like Knowledge Graph + Evaluators we are laying a foundation teachers can trust 🔽 https://t.co/MSTDxiJnmI ...