A agentindex
Comparison

CrewAI vs Mastra

A like-for-like, spec-level comparison. Both entries are verified against their docs and repo.

CrewAI

Role-playing multi-agent crews.

  • + Intuitive role-and-task mental model
  • + Fast to prototype multi-agent flows
  • − Less fine-grained control than LangGraph
  • − Can be token-inefficient at scale

Mastra

The TypeScript-first agent framework.

  • + Best-in-class DX for TS/JS teams
  • + Includes evals and memory out of the box
  • − Elastic license limits some commercial hosting
  • − Smaller community than Python options
Spec CrewAI Mastra
Category framework framework
License MIT Elastic-2.0
Open source Yes Yes
Self-hostable Yes Yes
MCP support Yes Yes
Pricing freemium free
Starting price BYOK usage cost BYOK usage cost
Models claude, gpt, gemini, byok claude, gpt, gemini, byok
Languages python typescript
GitHub stars 54.4k 25.4k
Last activity 2026-06-25 2026-06-25