Claude

Claude is Anthropic's family of AI models and the assistant built on top of them, designed to be genuinely helpful while staying honest and safe by default. Built around a "Constitutional AI" training approach rather than relying purely on human feedback, Claude aims to reason transparently, push back when appropriate, and avoid the kind of confident-sounding fabrication that plagues many AI assistants.

Claude is widely used across writing, coding, research, and analysis — with coding and long-context reasoning consistently cited as areas where it stands out from competitors.

Common Use Cases

Claude is widely used for:

• Software development: Writing, reviewing, and debugging code, understanding unfamiliar codebases, and building complete features from a plain-language description.
• Research & analysis: Synthesizing large documents, comparing sources, and reasoning through multi-step problems.
• Writing & editing: Drafting, refining, and restructuring text with a more natural, less formulaic tone.
• Team & business workflows: Assisting with spreadsheets, presentations, and documents, and integrating into tools teams already use.

Key Features & Capabilities

• Large context windows: Can hold and reason over very large amounts of text or code in a single conversation.
• Constitutional AI safety approach: Trained on a written set of principles guiding how it reasons and responds, rather than relying solely on reinforcement learning from human feedback.
• Multiple model tiers: A range of models trading off speed against reasoning depth, so lighter tasks and harder problems can each be matched to an appropriate model.
• Extended/adaptive reasoning: Able to work through complex problems step by step before answering, with the depth of reasoning adapting to the task.
• Agentic tool use: Can search the web, execute code, and work with connected tools and data sources as part of completing a task, not just respond in a single turn.

Available Platforms

Claude can be accessed and integrated through:

• claude.ai: The web, macOS, and Windows apps, plus iOS and Android.
• Claude Code: An agentic coding tool for the terminal, VS Code, JetBrains, and desktop.
• Claude for Chrome, Excel, and PowerPoint: Browser and office-app integrations.
• Claude API: Direct model access for developers building their own applications.
• Team integrations: Including Slack, for collaborative, in-context assistance.

Learn More

Official Resources

• Claude (claude.ai)
• Anthropic
• Claude API documentation