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The AI Agent Stack
Cheat Sheet 2026

Every framework, LLM provider, tool, and design pattern you need to build autonomous AI agents — organized on a single page.

What's inside

7 Agent Frameworks

  • LangGraph, CrewAI, AutoGen
  • OpenAI, Claude, Google ADK
  • Smolagents + when to use each

6 LLM Providers

  • GPT-5, Claude Opus 4, Gemini 2.5
  • DeepSeek V3, Llama 4, Qwen 3
  • Pricing & best use cases

18 Essential Tools

  • Vector DBs & memory
  • Orchestration & monitoring
  • Guardrails, eval & deployment

6 Design Patterns

  • ReAct, Plan-and-Execute
  • Reflection, Multi-Agent
  • Tool-Use, Human-in-the-Loop

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Always current

Updated for 2026 with the latest frameworks and models

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Built for builders

No fluff — just the tools you need to ship AI agents

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Decision matrix

Know exactly which framework fits your use case

Want more depth? Get our Top 10 AI Agent Tools guide — 14 pages with ratings, pricing, and a decision matrix.

paxrel.com · AI Agents Weekly · Top 10 Tools · @paxrel_ai