A side-by-side of two agent frameworks for building AI agents — live GitHub data, languages, and what each is best at.
| Pydantic AI | LlamaIndex | |
|---|---|---|
| GitHub stars | ★ 18k | ★ 50k |
| Language | Python | Python |
| Category | Agent frameworks | Agent frameworks |
| Best for | type-safe agents | RAG |
| Repository | pydantic/pydantic-ai | run-llama/llama_index |
Pydantic AI and LlamaIndex are both credible choices. By community traction, LlamaIndex leads (★ 50k). Pick Pydantic AI for type-safe agents; pick LlamaIndex for RAG.
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