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AI Agent Frameworks in 2025: LangChain, LlamaIndex, CrewAI, AutoGPT — and Draft'n run

September 15, 2025

AI Agent Frameworks in 2025: LangChain, LlamaIndex, CrewAI, AutoGPT — and Draft'n run

If you’re evaluating agent frameworks, you’ll likely touch LangChain, LlamaIndex, CrewAI, and AutoGPT. Here’s how they differ—and where Draft’n run fits if you want less glue code and more production.

Internal resources: Agentic AI, AI workflow builder, Integration, Custom AI, Demo.

LangChain

A modular toolbox with a vast ecosystem of tools, memory modules, and agents (ReAct). Great for prototyping and custom pipelines.

  • External site: LangChain
  • Strengths: integrations galore, Python/TS parity, community examples.
  • Trade‑offs: autonomy can be brittle without structure; add LangGraph/LangSmith to harden.

LlamaIndex

Focused on data + RAG: ingestion, parsing (LlamaParse), indexes, and query engines. Now includes Workflows and cloud options.

  • External site: LlamaIndex
  • Strengths: top‑tier data connectors and indexing patterns; strong RAG ergonomics.
  • Trade‑offs: more code to orchestrate end‑to‑end unless you adopt their cloud.

CrewAI

Built for multi‑agent collaboration with roles and coordination. Open core plus a studio for build/deploy/track.

  • External site: CrewAI
  • Strengths: patterns like manager/worker/validator; good for complex teamwork.
  • Trade‑offs: still need to stitch observability, deployment, and governance your side.

AutoGPT

The open source autonomy pioneer. Powerful, extensible, and hands‑on. Now with a visual canvas, but still requires careful guardrails for production.

  • External site: AutoGPT
  • Strengths: exploration, plugins, internet/code/folders access.
  • Trade‑offs: reliability and cost control are on you.

Where Draft’n run helps

  • Visual, explicit workflows that still allow LLM decisions where needed.
  • Built‑in traces, token/cost tracking, alerts, and human‑in‑the‑loop steps.
  • One‑click API deployment and RBAC, with open source or managed hosting.
  • Works with your stack: reuse LangChain tools, call LlamaIndex, hit any REST/DB.

See how teams ship faster in the case studies or try a demo.

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