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Agentic AI
Agent Frameworks

Five Agent Frameworks, Two We Can Actually Verify: A Documentation-First Comparison

Learn LangGraph and CrewAI's documented APIs hands-on, and know exactly what remains unverified about AutoGen, the OpenAI Agents SDK, and LlamaIndex.

MCB Editorial
MCB Editorial
Tech Buzz Daily Desk · 9 min read ·
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Five Agent Frameworks, Two We Can Actually Verify: A Documentation-First Comparison
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Learning Objectives & Key Takeaways

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What you will learn
  1. LangGraph compiles explicit state graphs you can trace node by node with LangSmith.
  2. CrewAI separates Flows, the event-driven backbone, from Crews, the collaborating agents.
  3. Only LangGraph and CrewAI have official documentation confirmed for this piece.
  4. AutoGen, the OpenAI Agents SDK, and LlamaIndex claims here are unverified background, not sourced facts.
  5. Always re-check framework defaults and APIs against current docs before a production bet.

The Night Our Support Bot Looped Itself Into a Billing Nightmare

A support agent built with a popular multi agent framework kept re delegating a refund request between two agents, each one deciding the other should handle it, until it silently double refunded a customer. The on call engineer paged at 2am couldn't find a single trace showing which agent had made the final call.

The real problem was not the framework chosen but that the team had picked it off a popularity chart rather than reading what it actually promised to do for orchestration, tracing, and state control. Every agent framework markets autonomy, but few marketing pages explain exactly how you debug that autonomy at 2am.

In the rest of this story
  1. LangGraph: Orchestration You Can Actually Trace
  2. CrewAI: Crews for Work, Flows for the Backbone
  3. What We Can't Verify: AutoGen, the OpenAI Agents SDK, and LlamaIndex
  4. Choosing Between What's Documented and What's Not
  5. Your Interview and Project Takeaway
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MCB Editorial

Tech Buzz Daily Desk. Contributing deep-dive engineering architectures, cloud paradigms, and system design insights to Master Class Buddy.