📖 The AI Tool Bible

CrewAI vs Vellum

A side-by-side look at pricing, capabilities, pros, cons, and our editorial scores.

 
CrewAI
Agents
Vellum
Agents
TaglinePython framework for multi-agent orchestration.Personal AI assistant with persistent memory across email, calendar, and chat channels.
CategoryAgentsAgents
PricingFreemium· Free open-source core; cloud platform paidFreemium· Free tier + API costs; paid plans available
ModelBYO (Claude / GPT / open)Multi-model (Claude-class LLMs)
Editorial score8.4 / 10—
Use cases
multi-agentorchestrationPython
personal assistantemail triagecalendar managementmeeting prepresearchtask automation
Pros
  • Clean Python API
  • Strong role/goal abstractions
  • Active community
  • Hosted platform for deployment
  • Persistent multi-type memory across sessions
  • Works across Mac, Web, iOS, Slack, Telegram, phone, CLI
  • Managed OAuth into Gmail, Calendar, Slack
  • Open-source with self-host option
  • Fast onboarding (sub-30-second setup)
Cons
  • Production observability still maturing
  • Debugging multi-agent flows is hard
  • Requires broad access to inbox and calendar
  • Pricing tiers not publicly itemized
  • Young product in a crowded assistant space
  • Relies on third-party LLM costs on top of plan
Websitewww.crewai.comvellum.ai
Pick CrewAI if
  • ✅ Clean Python API
  • ✅ Strong role/goal abstractions
  • ✅ Active community
  • ✅ Hosted platform for deployment
Pick Vellum if
  • ✅ Persistent multi-type memory across sessions
  • ✅ Works across Mac, Web, iOS, Slack, Telegram, phone, CLI
  • ✅ Managed OAuth into Gmail, Calendar, Slack
  • ✅ Open-source with self-host option
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