A side-by-side of two agent frameworks for building AI agents — live GitHub data, languages, and what each is best at.
Short answer: LlamaIndex leads Claude Agent SDK vs LlamaIndex by community traction (★ 51k vs ★ 7.8k). Pick Claude Agent SDK for Claude-native agents; pick LlamaIndex for RAG.
✓ Live data verified
| Claude Agent SDK | LlamaIndex | |
|---|---|---|
| GitHub stars | ★ 7.8k | ★ 51k |
| Language | Python | Python |
| Category | Agent frameworks | Agent frameworks |
| Best for | Claude-native agents | RAG |
| Repository | anthropics/claude-agent-sdk-python | run-llama/llama_index |
Claude Agent SDK and LlamaIndex are both credible choices. By community traction, LlamaIndex leads (★ 51k). Pick Claude Agent SDK for Claude-native agents; pick LlamaIndex for RAG.
Both are credible agent frameworks. By community traction LlamaIndex leads (★ 51k). Pick Claude Agent SDK for Claude-native agents; pick LlamaIndex for RAG.
Claude Agent SDK is Anthropic's SDK for building agents on Claude — the harness behind Claude Code, with in-process tools, hooks, and an interactive client. Formerly the Claude Code SDK.. LlamaIndex is Data framework for connecting LLMs to private data — indexing, retrieval, and agentic RAG over your documents..
LlamaIndex has more — ★ 51k vs ★ 7.8k (live counts).
Often yes — many teams combine agent frameworks. Check each tool's docs for interop; they solve overlapping but not identical problems.
Claude Agent SDK is primarily Python; LlamaIndex is primarily Python.
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