Read more: https://t.co/QUCrXhUHdD ...

U.S. federal departments and agencies can now more quickly and easily get access to Claude to transform how they work, all while still meeting federal security and compliance requirements. https://t.co/cQABMyklGY ...

Model Improvement - The company plans to release substantially larger improvements to its models in the coming weeks [1]

Opus 4.1 is now available to paid Claude users and in Claude Code.It's also on our API, Amazon Bedrock, and Google Cloud's Vertex AI.Read more: https://t.co/ansKMHes5I ...

Product Update - Claude Opus 4.1 is released, representing an upgrade to Claude Opus 4 [1] - The upgrade focuses on improvements in agentic tasks, real-world coding, and reasoning [1]

This research was led by @RunjinChen and @andyarditi through the Anthropic Fellows program, supervised by @Jack_W_Lindsey, in collaboration w/ @sleight_henry and @OwainEvans_UK.The Fellows program is accepting applications: https://t.co/li3i79QnGAAnthropic (@AnthropicAI):We’re running another round of the Anthropic Fellows program.If you're an engineer or researcher with a strong coding or technical background, you can apply to receive funding, compute, and mentorship from Anthropic, beginning this October. ...

We’re also hiring full-time researchers to investigate topics like this in more depth: https://t.co/L5I2x0xrPDJack Lindsey (@Jack_W_Lindsey):We're launching an "AI psychiatry" team as part of interpretability efforts at Anthropic! We'll be researching phenomena like model personas, motivations, and situational awareness, and how they lead to spooky/unhinged behaviors. We're hiring - join us! https://t.co/cUPsJ8ktsG ...

New Anthropic research: Persona vectors.Language models sometimes go haywire and slip into weird and unsettling personas. Why? In a new paper, we find “persona vectors"—neural activity patterns controlling traits like evil, sycophancy, or hallucination. https://t.co/PPX1oXj9SQ ...

Claude artifacts are now even better.Upload PDFs, images, code files, and more to AI-powered apps that work with your data. https://t.co/DvbWmioFOF ...

Available for all plans, including Team and Enterprise: https://t.co/1UxUsc9nkq. ...