AI assistant by Anthropic for complex reasoning, code generation, and analysis tasks.
Claude is a large language model developed by Anthropic that excels at complex reasoning, code generation, and analysis tasks. Built with Constitutional AI principles, Claude provides reliable assistance for programming, writing, research, and problem-solving while maintaining safety and accuracy.
- 🏢 Official Anthropic Resources
- ⭐ Community Curated Lists
- 🧩 Extensions & Integrations
- 💻 Applications
- 📚 Educational Resources
- 👥 Community
The authoritative source for everything Claude — directly from Anthropic
- Claude Opus 4.5 (Nov 2025) — World's best for coding, agents, computer use, and complex enterprise tasks. Dramatically improved token efficiency. Announcement
- Claude Sonnet 4.5 (Sep/Oct 2025) — Best balance of intelligence, speed, and cost. Sets new benchmarks in coding, reasoning, and alignment. Announcement
- Claude Haiku 4.5 (Oct 2025) — Fastest and most cost-effective, with state-of-the-art speed for complex tasks. Announcement
- Anthropic Console — Sign up, get API keys, test prompts, and monitor usage.
- Official Documentation — Complete API reference, guides, prompt engineering, tool use, computer use, and release notes.
- API Overview & Pricing — Usage-based pricing, prompt caching, web search, computer use (Python execution), batch processing, citations, and more.
Official SDKs — The most reliable way to use the Claude API. All support messages, tool use, streaming, prompt caching, and more.
- anthropic-sdk-python — Python SDK with async support, type hints, and full feature parity.
- anthropic-sdk-typescript — TypeScript/JavaScript SDK for Node.js and browsers.
- anthropic-sdk-java — Java/Kotlin SDK with modern features.
- anthropic-sdk-go — Go SDK with idiomatic design.
- anthropic-sdk-php — PHP SDK (Beta).
- anthropic-sdk-csharp — C#/.NET SDK (Beta).
- anthropic-sdk-ruby — Ruby SDK.
Agent SDKs — For building advanced agentic applications.
Code Examples & Starters
- Claude Cookbook — Official notebooks and recipes for common patterns (RAG, tool use, etc.).
- Claude Quickstarts — Ready-to-deploy example apps.
Official access to Claude models through cloud providers
- Amazon Bedrock — Fully managed access to the latest Claude models (including Opus 4.5, Sonnet 4.5, and Haiku 4.5). Supports features like cross-region inference, latency optimizations, fine-tuning, agents, guardrails, and deep integration with AWS services. Ideal starting point for AWS users.
- Google Cloud Vertex AI Model Garden — Discover and deploy Claude models directly in the Model Garden with provisioned throughput, prompt caching, batch predictions, grounding, and enterprise compliance (e.g., FedRAMP High). Great for building and deploying agents with Google Cloud tools.
- Microsoft Azure AI Model Catalog (Anthropic Publisher) — Access Claude models (Opus 4.5, Sonnet 4.5, Haiku 4.5, and more) via the AI Model Catalog (public preview). Supports serverless deployment, agent building, tool integration, fine-tuning, and billing through existing Azure agreements. Perfect for hands-on discovery and deployment in Azure ecosystems.
Detailed evaluations, risk assessments, and alignment insights for Claude models
- Transparency Hub — Overview of safety evaluations and improvements across models.
- Claude Opus 4.5 System Card — Comprehensive capability and safety report (Nov 2025).
- Claude Sonnet 4.5 System Card — Detailed evaluations (Sep 2025).
- Claude Haiku 4.5 System Card — Safety and performance report (Oct 2025).
Awesome lists and collections maintained by the community
- hesreallyhim/awesome-claude-code — Slash-commands, CLAUDE.md files, CLI tools, and workflows for Claude Code.
- travisvn/awesome-claude-skills — Resources and tools for customizing AI workflows with Claude Skills.
- BehiSecc/awesome-claude-skills — Categorized skills for document handling, development tools, data analysis, and more.
- langgptai/awesome-claude-prompts — Collection of prompt examples designed to improve Claude interactions.
- vijaythecoder/awesome-claude-agents — Team of specialized AI agents for building features and debugging.
- VoltAgent/awesome-claude-code-subagents — 100+ specialized AI agents for full-stack development maintained by the community.
- punkpeye/awesome-mcp-servers — Curated list of Model Context Protocol (MCP) servers for extending Claude's capabilities.
- Claude Code Chat — Beautiful native chat interface for Claude Code within VS Code with conversation history and MCP support.
- Claude VSCode Theme — Thoughtful dark theme collection with classic and italic variants. Inspired by Claude AI with carefully balanced contrast and warm syntax colors.
- Claude for Chrome (Beta) — Max plan required. Claude works directly in your browser and takes actions on your behalf. Features scheduled tasks, planning mode, multi-tab workflows, and smart navigation for Slack, Gmail, Google Calendar, Docs, and GitHub.
- Claude Usage Tracker — Chrome extension for tracking Claude AI usage and performance metrics.
- Claude Desktop — Official Claude desktop app for macOS and Windows.
- Claude Desktop Debian — Unofficial Claude desktop app for Debian/Linux.
Free courses from Anthropic covering prompt engineering, API usage, agents, and more
- AI Fluency: Framework & Foundations — Collaborate with AI systems effectively, efficiently, ethically, and safely.
- AI Fluency for Educators — Apply AI Fluency into teaching practice and institutional strategy.
- AI Fluency for Students — Enhance learning, career planning, and academic success through AI.
- AI Fluency for Nonprofits — Increase organizational impact while staying true to mission and values.
- Teaching AI Fluency — Teach and assess AI Fluency in instructor-led settings.
- Building with the Claude API — Full spectrum of working with Anthropic models using the Claude API.
- Claude Code in Action — Integrate Claude Code into your development workflow.
- Introduction to Model Context Protocol — Build MCP servers and clients from scratch using Python.
- MCP: Advanced Topics — Advanced patterns including sampling, notifications, and transports.
- Claude with Amazon Bedrock — Accreditation program course, now available publicly.
- Claude with Google Vertex AI — Working with Anthropic models through Google Cloud's Vertex AI.
- Claude Video Tutorials — Official video tutorials from Claude Support.
- Claude Code Everything You Need to Know — Ultimate all-in-one guide to mastering Claude Code. Covers setup, prompt engineering, commands, hooks, workflows, automation, integrations, MCP servers, and the BMAD method.
- 40+ Claude Code Tips — Tips for getting the most out of Claude Code, including a custom status line script, cutting the system prompt in half, using Gemini CLI as Claude Code's minion, and Claude Code running itself in a container. Also includes the dx plugin for GitHub Actions debugging, conversation cloning, and handoffs.
Join the Claude community to share knowledge, get help, and stay updated
- Claude Discord — Official Discord community for Claude users and developers.
- r/ClaudeAI — Reddit community for Claude discussions and tips.
- Anthropic AI Facebook Group — Facebook group for Anthropic AI and Claude discussions.