LlamaIndex vs CrewAI

LlamaIndex

CrewAI

LlamaIndex · 16 features

• Agents — Agent patterns: ReAct, function-calling, multi-agent workflows.
• Document Readers — 200+ readers for PDF, web, Google Drive, SharePoint, Notion, S3, Slack.
• Evaluations — Built-in eval framework: faithfulness, context precision/recall.
• LlamaCloud — Managed indexing + retrieval platform. File connectors, auto-chunking, retrieval…
• LlamaExtract — Schema-based structured extraction from unstructured docs.
• LlamaHub — Community marketplace of readers, tools, prompts.
• LlamaParse — Best-in-class PDF + complex document parser. Tables, math, layout preserved.
• Multimodal — Image + text models, image retrieval.
• Node Parsers — Document chunkers: token, sentence, semantic, hierarchical.
• Observability (OpenLLMetry) — OTel-based tracing baked in.
• Property Graph — Graph-based RAG (knowledge graphs from unstructured data).
• Query Engines — Retrieval + response synthesis combos — router, sub-question, tree, etc.
• RAG — End-to-end RAG patterns: ingest → index → retrieve → synthesize.
• Tools — 50+ pre-built tool integrations.
• Vector Store Integrations — 50+ vector DB integrations.
• Workflows — Event-driven agent workflows (AgentWorkflow).

CrewAI · 11 features

• CrewAI Enterprise UI — Managed cloud for deploying + monitoring crews.
• Hierarchical Process — Manager agent delegates to workers.
• Human Input — human_input=True pauses for human review/approval.
• MCP Tool Support — Consume MCP servers as Agent tools.
• Memory — Short-term, long-term, entity memory per Crew/Agent.
• Observability Integrations — Langfuse, LangSmith, AgentOps, OpenLIT.
• Planning Feature — Optional planner agent that plans before task execution.
• Task Guardrails — Validate task output + retry with feedback.
• Testing — Test Crews deterministically with eval metrics.
• Tools — 70+ pre-built tools (search, scrape, file, vision, code exec).
• Training — Train agents from feedback loops.