LlamaIndex vs Microsoft AutoGen

as AI assistants see them, week of 2026-09-14

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LlamaIndex and Microsoft AutoGen land close together overall, scoring 7 and 8 out of 100, with each one named in 10 of 71 answers. LlamaIndex does best on questions like "Which AI agent framework should a developer choose?" (2 of 3 answers) and "What are the best platforms for building AI agents?" (2 of 4), while Microsoft AutoGen leads on "What are the best open-source AI agent frameworks?" (3 of 3) and also shows up in 3 of 4 for building AI agent platforms. Head-to-head, LlamaIndex is named more often in 5 questions, AutoGen in 3, and they tie on 12. Neither is mentioned for voice agents, MCP tools, or non-technical founders.

Head to head

metric	LlamaIndex	Microsoft AutoGen
score	7	8
questions won	8	4

By assistant

LlamaIndex

assistant	score	named in, this week	usual spot, this week
ChatGPT	9	15% of answers	#5.7
Claude	2	5% of answers	#13.0
Gemini	18	42% of answers	#9.4
Perplexity	3	5% of answers	#7.0

Microsoft AutoGen

assistant	score	named in, this week	usual spot, this week
ChatGPT	6	10% of answers	#5.5
Claude	9	20% of answers	#9.5
Gemini	12	17% of answers	#3.5
Perplexity	7	11% of answers	#5.0

Where they differ

Only LlamaIndex gets named for

What's the best platform for an agency building AI agents for clients?
What's the best way to give an AI agent memory across sessions?
What's the best platform to build and deploy AI agents for a startup?
What's the best platform to build an AI agent that connects to my company's data?
What's the best tool to build an AI agent that answers customer emails?

Only Microsoft AutoGen gets named for

What's the best AI agent builder in 2026?

More comparisons

Not sold on either?

Scores count how often each assistant names a product, weighted by position. How the score works · Full AI agent builders leaderboard