Claude is Anthropic's flagship AI assistant, known for its advanced reasoning, coding capabilities, and safety-focused design. The latest Claude Opus 4.6 model features a 1 million token context window, enabling it to process entire codebases or extensive document libraries in a single conversation. Claude offers Extended Thinking mode for complex multi-step reasoning and debugging, agent capabilities for completing 30+ hour tasks autonomously, and Cowork for multi-step workflow automation. The platform supports text generation, code writing, image analysis, web search, and file processing. Claude is available through a web interface, iOS, Android, and desktop apps, as well as a developer API. The API offers three model tiers: Haiku (fast and affordable), Sonnet (balanced), and Opus (most capable). Claude Code provides terminal-based agentic coding with deep codebase understanding. Enterprise features include HIPAA-ready configuration, SSO/SCIM provisioning, and audit logs for regulated industries.