Every drop, every tool we track

Claude Fable 5 will be available again globally tomorrow.

We’ve received notice that the Department of Commerce has lifted export controls on Claude Fable ...

As agents take on longer-running work, engineering shifts to setting direction, reviewing work, a...

Claude Sonnet 5 is now available in Cursor.

Sonnet 5 is a substantial improvement over Sonnet 4.6 on reasoning, tool use, coding, and knowled...

We’re introducing GeneBench-Pro, a research-level benchmark for a harder kind of AI progress: how...

Introducing Claude Science, a new app designed with every stage of research in mind.

⚙️ We debugged a year’s worth of crashes in our data infrastructure and found one issue in the ha...

MCPs and Organizations in Team Marketplaces

We've expanded team marketplaces to support Team MCPs and organization groups.

Introducing GeneBench-Pro

Research

Core dump epidemiology: fixing an 18-year-old bug

Engineering

Claude Science, an AI workbench for scientists, is now available

Claude Science is a customizable app that integrates the tools and packages researchers most often use, produces auditable artifacts, and provides flexible access to computing resources.

Introducing Claude Sonnet 5

Sonnet 5 delivers frontier performance across coding, agents, and professional work at scale.

Redeploying Fable 5

Fable 5 returns globally July 1. We're also proposing an industry-wide framework for scoring jailbreak severity, together with Amazon, Microsoft, Google, and other Glasswing partners.