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16 guides~1.8 hrs totalupdated Jul 6, 2026

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Pydantic AI vs LangChain: Which Framework Should You Use? (2026)

Pydantic AI vs LangChain in 2026: real code for both, a clear verdict on which to pick, and exactly where each framework stands right now — including the v2 beta.

Intermediate · 6 min

AI Engineering

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IntermediateOpenAI Agents SDK vs LangGraph: Which to Use in 2026?OpenAI Agents SDK vs LangGraph in 2026: a managed agent loop or an explicit state graph? A head-to-head on control, state, durability, and when to pick each.5 min IntermediateAgentic RAG: Why Static Retrieval Isn't Enough (2026)Agentic RAG wraps retrieval in an agent loop that grades its own results and re-queries when they're weak. Here's how it beats static RAG — and what it costs.6 min IntermediateWhy Your LangGraph Agent Keeps Looping (and How to Fix It)Your LangGraph agent looping until GraphRecursionError? Here's how to diagnose the four causes and fix the stop condition — not just raise the limit.9 min BeginnerWhich AI Agent Framework Should You Use in 2026?A developer's decision guide to the best AI agent frameworks in 2026 — three questions to confidently pick LangGraph, CrewAI, the OpenAI or Claude SDK.9 min IntermediateAgentic AI in Python: Zero to Production — The Full SeriesThe complete Agentic AI in Python series — six parts that take you from a local LangGraph agent to a deployed, memory-keeping, tool-using, observable app. Start here.1 min BeginnerFrom Scratch to LangGraph: When to Stop Hand-Building AgentsFrom scratch to LangGraph: the four walls that tell you when to use LangGraph instead of a hand-built Python agent loop — and when plain Python is still the right call.5 min IntermediateLangGraph Tutorial: Build Your First AI Agent in Python (2026)A LangGraph tutorial for 2026: build your first AI agent in Python with create_agent, then rebuild it as a raw StateGraph so you actually see what's underneath.7 min IntermediateBuild an Agentic AI App in Python: MCP Client (Part 5)Build an MCP client in Python so your agent calls real tools — connect a LangGraph agent to an authenticated FastMCP server with langchain-mcp-adapters.7 min BeginnerAgentic AI Roadmap 2026: Worth It + the Exact PathAn honest agentic AI roadmap for 2026: is it worth learning, the exact path from Python to a deployed agent, what to skip, and the tools that matter.5 min IntermediateLangGraph vs CrewAI vs AutoGen: Which to Use in 2026?LangGraph vs CrewAI vs AutoGen compared for 2026: dev speed, production reliability, observability, and how to pick the right Python AI agent framework.6 min IntermediateBuild an Agentic AI App in Python: AI Agent Memory (Part 4)Add real AI agent memory in Python — a LangGraph Store that recalls users across threads, semantic search with embeddings, and Redis for production.7 min IntermediateBuild an Agentic AI App in Python: Multi-Agent Systems (Part 3)Build multi-agent systems in Python with LangGraph: a supervisor routing search, summarise & fact-check workers, plus loop guards that save real money.8 min IntermediateDeploy AI Agent to Cloud Run or Fly.io (Python 2026)Deploy AI agent code to Cloud Run or Fly.io in one command: push once, get a live HTTPS URL, and keep your Postgres-backed agent memory intact — no VPS.8 min IntermediateBuild an Agentic AI App in Python: FastAPI, Docker & Deploy to Production (Part 2)Wrap your LangGraph agent in FastAPI, Dockerize it, and deploy to a cloud VPS. Part 2 of the Agentic AI Python series — zero to production.9 min IntermediateBuild an Agentic AI App in Python: Zero to Production (Part 1)Learn how to build a working agentic AI app in Python with LangGraph. Part 1 covers tools, StateGraph, and memory — step by step from scratch.9 min

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