Learn AI by Building
From your first dataset to production agents — deep-dive series, hands-on notebooks, and experiments you can rerun yourself.
Tutorials
View All →LLM Agent Cookbook
Build AI agents from scratch — ReAct, Tool Use, Multi-Agent orchestration
ML Cookbook
Master machine learning algorithms with hands-on Jupyter projects
Data Analysis Cookbook
SQL, Pandas, Statistics — everything for data-driven decisions
Ontology & KG Cookbook
RDF, OWL, Neo4j, and GraphRAG for knowledge-powered AI
Premium Series
Our Products
Tools we built for developers and job seekers
DrillCheck
AI-powered mock interviews — practice with real questions and get instant feedback
VibeCheck
Vibe-check your project — get AI feedback on your side project ideas
SpecRadar
Find what to build next — discover gaps in existing products and market opportunities
SpecRadar Career
Hottest tech skills from job posts — newsletter and CV analysis for your career
Starter Kits
View All →Practice notebooks, interview questions, and project solutions — ready to download.
Browse Starter KitsLatest Posts
View All →
Why ChatGPT Gives You a Different Answer Every Time -- One Knob, Measured
We measure, on a local model and on GPT-4o-mini, exactly how much answers change with sampling temperature. Temperature doesn't create diversity -- it amplifies what's already there.
Breaking the Reversal Curse with Identity Bridges — the ICML 2026 fix that shouldn't work but does
LLMs trained on "Alice's husband is Bob" famously fail on "Bob's wife is?" — the reversal curse. A new ICML 2026 paper fixes it by adding one weird kind of self-referential example to the training set. The naive version doesn't work; the right version does.
Mobile Claude Code: three approaches, and what actually works
Three ways to reach Claude Code from your phone — tmux + SSH, /remote-control, and server-based agents. The real fix isn't "mobile support" but decoupling compute from your device.
Inside Google COSMO — The New Architecture of On-Device AI Agents
Deep-dive into COSMO, Google's next-gen AI assistant accidentally leaked before I/O 2026. Full breakdown of the 3-mode architecture: Gemini Nano + PI server + Hybrid routing.
Self-Evolving AI Agents — The New Paradigm of 2026
GenericAgent, Evolver, Open Agents — comparing 3 self-evolving agent frameworks that learn, adapt, and grow without human coding.
PremiumBuild Your Own LLM Knowledge Base — A Karpathy-Style Knowledge System
Complete guide to building a permanent personal knowledge system with Obsidian + Claude Code. Wiki + Memory dual-axis architecture.