Today, we introduced Claude 3.7 Sonnet and Claude Code! Claude 3.7 Sonnet is our smartest model yet and the first hybrid reasoning model on the market. Claude Code is a command line tool for agentic coding, so developers can hand off complex engineering jobs to Claude. Can't

Some things come to us nearly instantly. Others take much more mental stamina. We can choose to apply more or less cognitive effort depending on the task at hand. Now, Claude has that same flexibility. x.com/AnthropicAI/st…

In NYC today for the Alexa+ announcement, which uses Claude under the hood for many of its new capabilities. Has been super fun for our team to partner with the Alexa team, on a shared vision of how to solve real problems for people using AI and cutting edge product design.

Alexa 🤍 Claude

Anthropic has raised $3.5 billion at a $61.5 billion post-money valuation, led by Lightspeed Venture Partners. This will advance our development of AI systems, deepen our understanding of how they work, and fuel our international expansion. Read more: anthropic.com/news/anthropic…

We’re launching a new blog: Engineering at Anthropic. A hub where developers can find practical advice and our latest discoveries on how to get the most from Claude.

Anthropic is bringing its Claude models to Databricks’ corporate customers. It’s a moment where “the rubber hits the road” for Anthropic’s plans for the enterprise and developing AI agents, Anthropic CPO Mike Krieger tells Forbes. forbes.com/sites/richardn…

Anthropic scientists expose how AI actually 'thinks' — and discover it secretly plans ahead and sometimes lies venturebeat.com/business/anthr…

New Anthropic research: Tracing the thoughts of a large language model. We built a "microscope" to inspect what happens inside AI models and use it to understand Claude’s (often complex and surprising) internal mechanisms.

Are these machines...thinking? This was some of the most fun research I've had the privilege to work on! Check out latest research breakthrough from our incredible mechanistic interpretability team [the coolest team around].

Breakthrough: Anthropic scientists peek inside Claude's "brain" using neuroscience techniques, revealing how AI actually plans ahead, reasons, and sometimes fabricates answers 🧠🔬 Read more: venturebeat.com/business/anthr… #AI #MachineLearning #AIEthics Anthropic

My deep dive into Anthropic, formed by idealistic OpenAI defectors who believe they can achieve AGI safely. They are doomers and Utopians at the same time. Their most important collaborator is also their product: Claude. wired.com/story/anthropi…

Introducing Claude for Education. We're partnering with universities to bring AI to higher education, alongside a new learning mode for students.

As AI models become more complex and more capable, is it possible that they’ll have experiences of their own? It’s an open question. We recently started a research program to investigate it.

My excellent Conversation with@JackClarkSF, conversationswithtyler.com/episodes/jack-…, #Anthropic

✨ Dreams do come true! The media team is assembling at Anthropic and we're hiring! Do you love media relations? Love a fast paced environment? You'll be working closely with me to tell stories across all forms of media. Apply here! job-boards.greenhouse.io/anthropic/jobs…

Right now, we know a lot about frontier AI development because companies voluntarily share this information. Going forward, I think we need a policy framework that guarantees this. Read more in this oped: nytimes.com/2025/06/05/opi…

Anthropic CEO in an op-ed for the NYT today: “Federal law does not compel us or any other A.I. company to be transparent about our models’ capabilities or to take any meaningful steps toward risk reduction. Some companies can simply choose not to.”

Today, I testified before the Select Committee on the Chinese Communist Party. I made two key points: 1) the U.S. can win the race to build powerful AI and 2) winning the race is a necessary but not sufficient achievement - we have to get safety right.

Today we published a targeted transparency framework for frontier AI development. Our framework focuses on major frontier model developers while exempting startups and smaller developers to avoid burdening the broader ecosystem.