Focus areas for The Anthropic Institute
At The Anthropic Institute (TAI), we’ll be using the information we can access from within a frontier lab to investigate AI’s impact on the world, and sharing our learnings with…
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An update on recent Claude Code quality reports
…The changes it introduced made it past multiple human and automated code reviews, as well as unit tests, end-to-end tests, automated verification, and dogfooding. Combined with this only happening in…
Partnering with Mozilla to improve Firefox’s security
…In this post, we share details of a collaboration with researchers at Mozilla in which Claude Opus 4.6 discovered 22 vulnerabilities over the course of two weeks. Of these, Mozilla assigned…
Introducing Claude Opus 4.5
…For automation of office tasks, our agents were able to autonomously refine their own capabilities—achieving peak performance in 4 iterations while other models couldn’t match that quality after 10. They…
Demystifying evals for AI agents
…Unnecessary shared state between runs (leftover files, cached data, resource exhaustion) can cause correlated failures due to infrastructure flakiness rather than agent performance. Shared state can also artificially inflate performance. For example…
Introducing Sonnet 4.6
…Users reported that it more effectively read the context before modifying code and consolidated shared logic rather than duplicating it. This made it less frustrating to use over long sessions than earlier…
How people ask Claude for personal guidance
…We used an automatic classifier which judged sycophancy by looking at whether Claude showed a willingness to push back, maintain positions when challenged, give praise proportional to the merit of ideas, and…
Introducing Claude for Small Business
…The full list of skills, automations, and connectors is available on the solutions page . Small and mid-market businesses fuel our economies, and for decades, QuickBooks has been proud to be their…
Advancing Claude in healthcare and the life sciences
…Users can choose exactly the information they share with Claude, must explicitly opt-in to enable access, and can disconnect or edit Claude’s permissions at any time. We do not use…
Long-running Claude for scientific computing
…Writing it in JAX is a natural fit here, since it gives us automatic differentiation and compatibility with accelerators (e.g., GPUs) essentially for free. Notably, the task isn’t in my…