In-context Learning (ICL) is when an LLM picks up a new task from examples shown in the prompt itself. This guide covers zero-shot, few-shot, chain-of-thought, fine-tuning comparisons, and production patterns.

Hallucination in LLMs is when a model produces plausible but incorrect output. This guide covers the causes, taxonomy, detection techniques, RAG and Constitutional AI mitigations, and the latest 2026 research.

A multi-agent system is an architecture where several LLMs collaborate to solve a task. Learn orchestrator-worker patterns, real-world examples, and Anthropic's research configuration.

OpenAI o3 is a reasoning-focused LLM released April 16, 2025. It uses reinforcement learning to think before answering, achieving state-of-the-art results on math, science, and coding benchmarks.

Plan Mode is Claude Code's read-only operating mode that forces Claude to plan without editing files. Use it for safe multi-file refactors, exploration, and production-impacting changes.

CLAUDE.md is a Markdown file Claude Code auto-loads to learn your codebase's commands, conventions, and constraints. Learn placement rules, structure, and practical patterns with examples.

Hugging Face is the largest open AI hub, hosting over a million models, hundreds of thousands of datasets, and Spaces demo apps. Learn its architecture (Hub, Transformers, Datasets, Diffusers), how to use it, license caveats, and how it compares to GitHub and Kaggle.

Ollama is an open-source runtime that lets you run Llama 3.1, Mistral, Gemma, Qwen, DeepSeek-R1, and other LLMs locally with one command. Learn its architecture, REST API, OpenAI compatibility, hardware requirements, and how it compares to LM Studio and llama.cpp.

DeepSeek V3 is an open-weight Mixture-of-Experts large language model from DeepSeek. This guide covers its MoE architecture, performance, training cost, deployment patterns, and how it compares to DeepSeek R1 and other modern LLMs.

AI Studio is Google's browser-based playground for trying Gemini, getting an API key, and prototyping LLM apps. This guide covers pronunciation, pricing, key management, Gemini integration, and how AI Studio differs from Vertex AI.