TokenLab - Build & Train LLMs

TokenLab teaches you how modern language models work by letting you build, train, evaluate, and use small models directly on your iPhone. Follow an 18-module learning path that begins with machine learning foundations, tokenization, embeddings, attention, and transformer architecture. Continue into model training, fine-tuning, alignment, reinforcement learning, preference optimization, RAG, agents, evaluation, on-device optimization, embodied AI, and robotics. LEARN BY DOING - Each lesson combines concise technical explanations with: - Interactive diagrams and model controls - Worked examples grounded in real training concepts - Knowledge checks designed to test understanding - Guided experiments that connect theory to measurable results - Reference materials and saved lessons for later review TRAIN MODELS ON DEVICE - Use the Training workspace to conduct real micro-model experiments on…