Compare frameworks
Pydantic AI vs CrewAI vs LangGraph
Every figure below carries the source that reported it and the moment it was observed. Values that failed validation are withheld rather than shown, and a dash means no source we track carries that field for that framework.
| Field | Pydantic AI | CrewAI | LangGraph |
|---|---|---|---|
| Stars | 20,133Synced from sourceCurrent2h ago | 58,958 (highest of the compared values)Synced from sourceCurrent2h ago | 42,201Synced from sourceCurrent2h ago |
| downloads | 3,076,771 (highest of the compared values)Synced from sourceStale1mo ago· past SLA | — | 2,342,174Synced from sourceCurrent2h ago |
| Last commit | 2026-09-24Synced from sourceCurrent2h ago | 2026-09-23Synced from sourceCurrent2h ago | 2026-09-23Synced from sourceCurrent2h ago |
| Language | pythonSeeded, unreviewedwritten 1mo ago | pythonSeeded, unreviewedwritten 1mo ago | pythonSeeded, unreviewedwritten 1mo ago |
| Licence | MITSynced from sourceCurrent2h ago | MITSynced from sourceCurrent2h ago | MITSynced from sourceCurrent2h ago |
| Archived | noSynced from sourceCurrent2h ago | noSynced from sourceCurrent2h ago | noSynced from sourceCurrent2h ago |
| Category | structured-outputSeeded, unreviewedwritten 1mo ago | multi-agentSeeded, unreviewedwritten 1mo ago | orchestrationSeeded, unreviewedwritten 1mo ago |
| Contributors | 589Synced from sourceCurrent2h ago | 340Synced from sourceCurrent2h ago | 287Synced from sourceCurrent2h ago |
| Forks | 2768Synced from sourceCurrent2h ago | 8560Synced from sourceCurrent2h ago | 7139Synced from sourceCurrent2h ago |
| Maintainer | PydanticSeeded, unreviewedwritten 1mo ago | CrewAISeeded, unreviewedwritten 1mo ago | LangChainSeeded, unreviewedwritten 1mo ago |
| npm downloads, monthly | — | — | 12112794Synced from sourceCurrent2h ago |
| npm downloads, weekly | — | — | 2342174Synced from sourceCurrent2h ago |
| npm package | — | — | @langchain/langgraphSynced from sourceCurrent2h ago |
| npm window ends | — | — | 2026-09-21Synced from sourceCurrent2h ago |
| Open issues | 965Synced from sourceCurrent2h ago | 463Synced from sourceCurrent2h ago | 816Synced from sourceCurrent2h ago |
| PyPI downloads, monthly | 13478631Synced from sourceStale1mo ago· past SLA | — | — |
| PyPI downloads, weekly | 3076771Synced from sourceStale1mo ago· past SLA | — | — |
| PyPI package | pydantic-aiSynced from sourceCurrent2h ago | crewaiSynced from sourceCurrent2h ago | langgraphSynced from sourceCurrent2h ago |
| PyPI released | 2026-09-24T03:23:01.147978ZSynced from sourceCurrent2h ago | 2026-09-16T22:10:41.471882ZSynced from sourceCurrent2h ago | 2026-09-21T14:43:28.196799ZSynced from sourceCurrent2h ago |
| Requires Python | >=3.10Synced from sourceCurrent2h ago | <3.14,>=3.10Synced from sourceCurrent2h ago | >=3.10Synced from sourceCurrent2h ago |
| PyPI version | 2.49.0Synced from sourceCurrent2h ago | 1.15.22Synced from sourceCurrent2h ago | 1.2.12Synced from sourceCurrent2h ago |
| Repository | https://github.com/pydantic/pydantic-aiSynced from sourceCurrent2h ago | https://github.com/crewAIInc/crewAISynced from sourceCurrent2h ago | https://github.com/langchain-ai/langgraphSynced from sourceCurrent2h ago |
Sources: GitHub REST API, npm registry downloads, PyPI registry metadata, pypistats.org downloads. Most recent observation 2h ago. Where a row is marked, ▲ is the highest of the values shown and ▼ the lowest — arithmetic on the figures above, not a ranking or a recommendation. Rows where neither extreme is meaningful are left unmarked rather than given a direction they do not have.
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