lebu.io
LearnExperimentBuildUnderstand
Every concept becomes a hands-on lab you run in the browser: see the data, build the pipeline, measure and improve it, then secure and harden it.
RAGLive
Retrieval-Augmented Generation
Eight retrieval patterns — chunking and retrieval strategies — one lab each.
8 labschunking × retrieval
Start
HarnessLive
Harness Engineering
Build the agent harness itself — capability contracts, shims, context, tools, governance, and resilience.
1 labsimulated traces
Start
AgentsSoon
AI Agents
Tools, planning, memory, and multi-agent orchestration.
Fine-tuningSoon
Fine-tuning & Adaptation
LoRA, distillation, and when to fine-tune vs retrieve.
EvalsSoon
Evaluation & Guardrails
Offline evals, LLM judges, and safety checks.