AI/TLDR

Agent SDKs & Frameworks

Every major way to build an agent — provider SDKs, LangGraph, CrewAI, DSPy, and the case for no framework at all.

Choosing a Framework

What frameworks buy you, what they cost you, and how to stay portable.

Provider Agent SDKs

First-party stacks from Anthropic, OpenAI, Google, and Vercel, hands-on.

LangChain & LangGraph

The biggest ecosystem in LLM tooling, demystified.

Orchestration Frameworks

LlamaIndex, CrewAI, AutoGen, Semantic Kernel, Haystack — one guide each.

Lightweight & Typed Frameworks

The minimal, type-safe, and optimizer-driven corner of the ecosystem.