What is Claude and how does it work? Claude is an artificial intelligence, trained by Anthropic using Constitutional AI to be safe, accurate, and secure — the trusted assistant for you to do your best work.

What should I use Claude for? How much does it cost to use? Sign in to Claude, Anthropic's AI assistant for problem solvers.

Feb 4, 2026 · Claude helped NASA’s Perseverance rover travel four hundred meters on Mars. At Anthropic, we build AI to serve humanity’s long-term well-being. Anthropic is an AI safety and …

Ready to Experience the Future of AI? Join millions of users and developers leveraging Claude 5 for unprecedented productivity and innovation.

As a versatile coding assistant, Claude plans multi-step tasks, pulls in relevant context, and adapts its approach as your project evolves. Write programs through natural conversation and use...

Claude is an AI chatbot similar to ChatGPT, capable of writing, coding, conducting research, and having conversations.

Feb 26, 2026 · Claude cheat sheet with Claude’s core capabilities, how it works, model lineup, availability, pricing, setup steps, and the main alternatives to watch.