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Exciting times at Anthropic — we’re actively hiring for product engineering roles across Growth, Mobile, and more. Open roles here: anthropic.com/jobs let me know if you apply!

Really enjoyed meeting with the JetBrains team recently and seeing how they're integrating Claude to help developers write better code. They just announced Claude models are now available in JetBrains AI Assistant - excited to see what folks build with it!

Tons of fun talking with Michael Mignano about my first 9 months at Anthropic!

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

Behind the scenes look at the Claude 3.7 Sonnet naming process

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.

Here is how I use Claude Code effectively.

We've just shipped a new feature in Claude Code: extended thinking. You can simply ask Claude to “think”, “think more”, or “think harder” and it’ll show its extended thinking process. This is all powered by our hybrid reasoning model, Claude 3.7 Sonnet.

Excited to see the MCP love spread to OpenAI – welcome! MCP has gone from a glimmer in Justin Spahr-Summers and David Soria Parra’s eyes last year to a thriving open standard with thousands of integrations and growing. LLMs are most useful when connecting to the data you already have and software

Claude Code team is cooking using Claude Code to code Claude Code

Fun working with our design + front-end team on these — really happy with how this refresh is turning out

We're hosting our first developer conference in May! More details here: anthropic.com/news/Introduci…

Have been using Research a ton internally — both for searching and synthesizing internal data, and gathering information from the web. I’ve especially liked using it for insights on my calendar and how I’m spending my time.

Just shipped web search to our API! We already use this in Claude Code to dynamically fetch documentation or other info, now you can build it into your apps too.

Claude 4 is here: Opus 4 and Sonnet 4 are now live! These are the best coding models in the world. Opus 4 can handle complex tasks for hours on end – one team ran it for 7 straight hours refactoring code. No more painful either/or decisions for founders. Looking forward to

Today, we're announcing four new capabilities on the Anthropic API to help developers build more powerful AI agents. A code execution tool, MCP connector, Files API, and extended prompt caching:

Dream collaboration!

Some fun user stats from day one of Claude 4: * New Max subscribers tripled * New Pro subscribers tripled * Claude Code usage increased 40% * Claude 4 already accounts for over 60% of our first party API

Honored that Reed Hastings is joining Anthropic's board! Reed's track record at Netflix is legendary and I’ve been even more inspired by his investments in education and his work accelerating digital economic development in Africa. anthropic.com/news/reed-hast…