AutoGen vs LlamaIndex: Which is Better in 2026?
Choosing between AutoGen and LlamaIndex? Both are popular agent framework tools. Below we compare them on pricing, free tiers, features, and pros & cons so you can pick the right fit for your stack.
Quick verdict
Both AutoGen and LlamaIndex are strong agent framework choices. The right pick comes down to your specific feature needs, existing stack, and team preferences.
AutoGen vs LlamaIndex — Side by Side
| AutoGen | LlamaIndex | |
|---|---|---|
| Category | Agent Framework | Agent Framework |
| Pricing | Free | Free |
| Starting price | Free tier available | Free tier available |
| Free tier | ||
| Rating | 4.4 | 4.5 |
| Best for | Agent Framework — ai, llm | Agent Framework — ai, llm |
Pros & Cons
- Backed by Microsoft Research
- Strong multi-agent conversation model
- Completely free
- Active development
- APIs have shifted between versions
- Python-centric
- Excellent RAG tooling
- Strong document parsing (LlamaParse)
- Open-source
- Many data connectors
- Overlaps with LangChain (choose one)
- Cloud features usage-priced
Key Features Compared
AutoGen
- Free open-source (Microsoft)
- Multi-agent conversations
- Tool use & code execution
- Human-in-the-loop
LlamaIndex
- Free open-source framework
- Best-in-class RAG primitives
- Data connectors & query engines
- Python & TypeScript
Choose AutoGen if…
- You want a free tier to validate before paying.
- Backed by Microsoft Research
- Strong multi-agent conversation model
- Completely free
Choose LlamaIndex if…
- You want a free tier to validate before paying.
- Excellent RAG tooling
- Strong document parsing (LlamaParse)
- Open-source
Frequently Asked Questions
Is AutoGen better than LlamaIndex?⌄
Both AutoGen and LlamaIndex are strong agent framework choices. The right pick comes down to your specific feature needs, existing stack, and team preferences.
What is the difference between AutoGen and LlamaIndex?⌄
AutoGen — Microsoft's open-source framework for multi-agent conversations and orchestration. Free to use. LlamaIndex — Open-source data framework for RAG and agents — connect LLMs to your data, with LlamaCloud for managed pipelines. Both are agent framework tools; the comparison table above breaks down pricing, free tiers, and what each is best for.
AutoGen vs LlamaIndex: which is cheaper?⌄
AutoGen pricing: Free. LlamaIndex pricing: Free. Confirm current pricing on each tool's official site, as plans change.
Which is rated higher, AutoGen or LlamaIndex?⌄
In our catalog, AutoGen rates 4.4 out of 5 and LlamaIndex rates 4.5 out of 5, so LlamaIndex has a slight edge on reviews.
See more options in our guide to the best agent framework tools for startups.
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