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#AIEngineering

8 guides~49 min totalupdated Jul 18, 2026

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Build a Customer Support AI Agent in Python (2026)

Build a customer support AI agent in Python with the OpenAI Agents SDK: triage, order lookup, refunds, human escalation, and memory — with runnable 2026 code.

Intermediate · 5 min

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BeginnerEvaluate an AI Agent on a Local LLM: Free, No API Key (2026)Evaluate an AI agent on a local LLM for free — build a tiny Pydantic AI agent on Ollama and score it with pydantic-evals, agent and judge both local, no API key.8 min IntermediateLLM Structured Outputs: Validated JSON in Python (2026)Get structured outputs from LLMs in Python: validated JSON, not fragile parsing — with Pydantic, OpenAI Structured Outputs, and instructor. Runnable code.4 min IntermediateOpenAI Agents SDK Handoffs: Multi-Agent Routing in PythonMaster OpenAI Agents SDK handoffs in Python: route between specialist agents, customize with handoff(), pass data with input_type, and filter history.5 min IntermediateOpenAI Agents SDK Tutorial: Build an Agent in Python (2026)Build your first AI agent with the OpenAI Agents SDK in Python: tools, structured output, handoffs, and memory — with runnable 2026 code and common pitfalls.6 min 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 BeginnerOpenRouter Review (2026): One API, 300+ Models — Worth It?OpenRouter review (2026): one API for 300+ LLMs with automatic failover and zero markup — but a 5.5% credit fee. Real costs, limits, and who should use it.7 min IntermediateHow to Evaluate an AI Agent: Metrics & Frameworks (2026)An AI agent evaluation guide for 2026: the metrics that actually matter, how to score them, and the frameworks — LangSmith, DeepEval, Ragas — to run them.9 min

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