Data%20Scientist

Hugging Face is the GitHub of AI, hosting 500k+ models, datasets, and Spaces. The Transformers library is the standard for NLP. The Inference API allows for immediate model deployment. It is the center of the open-source AI community.

Cursor is an IDE built from VS Code with deep AI integration. Cursor 3 with Agents Window can automatically write, edit, and debug entire features. It supports multiple models (Claude, GPT-4, Gemini) and has a large codebase context.

LangChain is the most popular Python/JavaScript framework for building AI applications. It supports RAG, AI agents, tool calling, and integrates with over 100 LLM providers and vector databases. LangSmith provides observability.