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This approach has made Sonnet the model of choice for developers worldwide. In addition to our new model, we're launching Claude Code, our first coding tool, in a limited research preview. With Claude Code, you can delegate substantial tasks to Claude—right from your terminal.
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Introducing Claude 3.7 Sonnet: our most intelligent model to date. It's a hybrid reasoning model, producing near-instant responses or extended, step-by-step thinking. One model, two ways to think. We’re also releasing an agentic coding tool: Claude Code.

Claude 3.7 Sonnet is a significant upgrade over its predecessor. Extended thinking mode gives the model an additional boost in math, physics, instruction-following, coding, and many other tasks. In addition, API users have precise control over how long the model can think for.

Claude 3.7 Sonnet is a state-of-the-art model for both coding and agentic tool use. In developing it, we’ve optimized somewhat less for math and computer science competition problems, and instead shifted focus towards real-world tasks that better reflect the needs of our users.

Claude Code has become indispensable for our team. In early testing, Claude completed tasks in a single pass that would normally take 45+ minutes of manual work. Join the limited preview:

We've conducted extensive model testing for security, safety, and reliability. We also listened to your feedback. With Claude 3.7 Sonnet, we've reduced unnecessary refusals by 45% compared to its predecessor. See the system card for more detail:

Claude 3.7 Sonnet and Claude Code mark an important step towards AI systems that can truly augment human capabilities. We look forward to seeing what you'll create. And we welcome your feedback as we continue to build. Read the full post:

Send important transactional emails with confidence knowing you'll reach customers' inboxes. Easy for devs to integrate with intuitive features that enable the rest of the team to collaborate. Try it out—no CC needed!

@_catwu !!!!! beautiful product

@cursor_ai integration please! 🥹

I imagine this will be an even bigger ass rape in terms of api credits...

"It'll keep going until it works." Claude develops just like me!

Love seeing @_catwu !!!!! Yessss. Go Cat, go Anthropic, go Claude!

They should ship a web app next 🧵

AI is making the world much easier to create in.




