Sonnet 4 is available in Cursor! We've been very impressed by its coding ability. It is much easier to control than 3.7 and is excellent at understanding codebases. It appears to be a new state of the art.

For code, SWE-Bench bench error rate is reduced by 50% from Sonnet 3.7 to Sonnet 4! In practice that has improved my quality of life signifanctly because I can iterate over ideas and run experiments much faster without being stuck on my code for a long time! 😄

We’re excited to announce Anthropic’s newest models, Claude Opus 4 and Claude Sonnet 4, are available on Vertex AI → goo.gle/4j9c3GJ

If you haven't tried Claude Code yet, its really worth giving it a spin with our latest models.

We're rolling out voice mode in beta on mobile. Try starting a voice conversation and asking Claude to summarize your calendar or search your docs.

Introducing two new ways to create with Claude: A dedicated space for building, hosting, and sharing artifacts, and the ability to embed AI capabilities directly into your creations.

I am really excited to share a new initiative we've been working on -- the ability to create artifacts that can themselves run API requests against Claude. Now, you can ask Claude to make a Claude-powered app, share it, and anyone can use it with their Claude account. More below!

It's all change in AI in 🇨🇭. When I moved here from the UK 11 years ago, for the quiet life, I didn't imagine there would be this much action! Exciting times.

We all know vending machines are automated, but what if we allowed an AI to run the entire business: setting prices, ordering inventory, responding to customer requests, and so on? In collaboration with Andon Labs, we did just that. Read the post: anthropic.com/research/proje…

📣 Anthropic Zurich is hiring again 🇨🇭 The team has been shaping up fantastically over the last months, and I have re-opened applications for pre-training. We welcome applications from anywhere along the "scientist/engineer spectrum". If building the future of AI for the

Tip: Claude Code Community is useful as a general agent, beyond coding. Name your files well. For mac users, Apple Notes and iMessages exists in your local file system. With your permission, Claude Code Community will be able to help with them. Example usages : /journal command that will

How fast has society been adopting AI? Back in 2022, ChatGPT arguably became the fastest-growing consumer app ever, hitting 100M users in just 2 months. But the field of AI has transformed since then, and it’s time to take a new look at the numbers. 🧵

New on mobile: Draft and send emails, messages, and calendar invites directly from the Claude app.

Today we're releasing Claude Opus 4.1, an upgrade to Claude Opus 4 on agentic tasks, real-world coding, and reasoning.

Our team Anthropic has been (~silently) entering Claude into cybersecurity competitions against humans. Turns out Claude is pretty good. Better than we were expecting! Read more at the link below, and come to Keane 's talk at DEF CON Saturday at 12:30!

Comparing Opus 4 to 4.1, side by side. From sharper design mocks to smoother animations, 4.1 produces more polished outputs—with more depth and complexity. Examples from us and the community:

The fellows program is running again, apply by August 17th. Currently available in US, Canada, and UK.

Claude Sonnet 4 now supports a 1 million token context window on the Anthropic API. Process over 75,000 lines of code or hundreds of documents in a single request.

"Opus for planning, Sonnet for execution" is now available as a model setting in Claude Code! Best way to see it in action is with a status line.

We’ve developed Claude for Chrome, where Claude works directly in your browser and takes actions on your behalf. We’re releasing it at first as a research preview to 1,000 users, so we can gather real-world insights on how it’s used.