Sign in - Claude What is Claude and how does it 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
Home \ Anthropic 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 research company that's working to build reliable, interpretable, and steerable AI systems
Claude (language model) - Wikipedia Claude is trained using "constitutional AI", a technique developed by Anthropic to improve ethical and legal compliance (AI alignment) Since Claude 3, each generation has typically been released in three sizes, from least to most capable: Haiku, Sonnet, and Opus
Claude by Anthropic - Apps on Google Play Built by Anthropic, an AI research company dedicated to building safe and dependable AI tools Powered by Claude Opus 4 6 and Sonnet 4 5, it brings advanced reasoning, creativity, and
Anthropic Courses Learn how to use and create sub-agents in Claude Code to manage context, delegate tasks, and build specialized workflows that keep your main conversation clean and focused
6 Ways to Invest in Anthropic Stock in 2026 Claude is an AI system that can analyze large volumes of information, generate and edit text, write code, and help automate complex workflows It's built by Anthropic, an AI safety and research company founded in 2021 by former OpenAI executives