Guides
Practical AI knowledge that compounds
Deep guides for developers, researchers, and teams building real AI systems.
Model SelectionLLMsStrategyUpdated monthly
Claude vs GPT-4 vs Gemini: honest comparison 2025
A practical comparison of leading frontier model families, including pricing patterns, context windows, coding quality, reasoning behavior, and ideal use cases.
17 min read
Verified 2026-03-18
PromptingLLMsApplied AI
The complete prompt engineering guide (2025)
A practical, end-to-end guide to designing prompts that produce reliable, structured, and high-quality outputs from modern LLMs.
18 min read
Verified 2026-03-18
RAGRetrievalLLM Systems
How to build a RAG system from scratch
A practical blueprint for building retrieval-augmented generation systems, from chunking and embeddings to evaluation and production tradeoffs.
20 min read
Verified 2026-03-18