crewai is a python framework for multi-agent systems. its crews are llm-driven (role prompts, with a model deciding delegation); its flows are deterministic, event-driven pipelines you wire yourself. bernstein orchestrates external cli coding agents (claude code, codex, aider, and 40+ more) with a deterministic python scheduler and merges their git worktrees. crewai fits when the work is reasoning over tools; bernstein fits when the work is code edits that need lint, type, test, and security gates before merge. you can run a crewai agent under bernstein via the generic adapter if you want its role logic under bernstein's merge queue. compare index: https://bernstein.run/vs.
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