CrewAI vs fast-agent
CrewAI and fast-agent are both agent frameworks for Python. CrewAI is published by CrewAI and fast-agent by evalstate. On GitHub, CrewAI has 60,066 stars and fast-agent has 3,945. Both were last active in Oct 2026. The table lines up where they differ (publisher, license, GitHub stars and weekly downloads) and has the install commands for both. Everything here comes from the listings' public sources and is refreshed daily. CrewAI describes itself as: Open-source Python framework for multi-agent workflows, with role-based Crews and event-driven Flows. fast-agent: CLI-first Python agent framework and coding agent with MCP, A2A and Agent Skills support, live streaming and human input. Licenses: CrewAI MIT, fast-agent Apache-2.0.
Updated Oct 26, 2026 · Built from catalog data; how we rank and grade
CrewAI
CrewAI
Open-source Python framework for multi-agent workflows, with role-based Crews and event-driven Flows.
fast-agent
evalstate
CLI-first Python agent framework and coding agent with MCP, A2A and Agent Skills support, live streaming and human input.
Who should pick which
- Pick CrewAI if you want a stable release (fast-agent is marked beta).
- Pick fast-agent if you want MCP support built in.
- CrewAI has the larger community: 60,066 GitHub stars against 3,945.
From listing data only. We don't pick a winner on security beyond the grades; read how grades work.
Side by side
| Fact | CrewAI | fast-agent |
|---|---|---|
| Type | Harness | Harness |
| Publisher | CrewAI | evalstate |
| License | MIT | Apache-2.0 |
| Pricing | Not stated | Not stated |
| Runs | Not stated | Not stated |
| Auth | Not stated | Not stated |
| Hosts supported | Not stated | Not stated |
| Tools | Not listed yet | Not listed yet |
| Security grade | –Security: not graded yet | –Security: not graded yet |
| Freshness grade | AFreshness: A | AFreshness: A |
| GitHub stars | 60,066 | 3,945 |
| Weekly downloads | 644,597 | 19,494 |
| Last release | Oct 24, 2026 | Oct 22, 2026 |
| Last activity | Oct 24, 2026 | Oct 22, 2026 |
Facts from each listing's public sources, checked daily. Tool lists arrive with tool scans.
Install
CrewAI
pip install crewai
fast-agent
pip install fast-agent-mcp
Also consider
- 0.853score
LlamaIndex
LlamaIndex
Open-source Python toolkit for RAG and agents over your own data, with event-driven workflows and 300+ integration packages.
HarnessAFreshness: A★ 52.6K↓ 1.4M/wk - 0.851score
Strands Agents
AWS
Open-source Python and TypeScript SDK for model-driven agents, with tools, MCP, multi-agent patterns and streaming.
HarnessAFreshness: A★ 8.9K↓ 8.9M/wk - 0.841score
GitHub Copilot SDK
GitHub
Multi-language SDKs for embedding the GitHub Copilot agent runtime, with planning, tool calls and file edits, in your apps.
HarnessAFreshness: A★ 10.6K↓ 1.2M/wk
Questions
- Is CrewAI or fast-agent more popular?
- CrewAI has more GitHub stars (60,066 against 3,945). Stars measure attention, not quality, so check freshness and docs too.
- Are CrewAI and fast-agent open source?
- Yes: CrewAI is MIT and fast-agent is Apache-2.0.
Related
Cite this page
CrewAI vs fast-agent. Agent Mart. https://agentmart.dev/compare/crewai-vs-fast-agent (last updated 2026-10-26)