Compare frameworks
CrewAI vs Pydantic AI vs Instructor
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 | CrewAI | Pydantic AI | Instructor |
|---|---|---|---|
| Stars | 59,154 (highest of the compared values)Synced from sourceCurrent5h ago | 20,249Synced from sourceCurrent5h ago | 13,955Synced from sourceCurrent5h ago |
| downloads | — | 3,076,771Synced from sourceStale1mo ago· past SLA | 13,080,962 (highest of the compared values)Synced from sourceStale1mo ago· past SLA |
| Last commit | 2026-09-29Synced from sourceCurrent5h ago | 2026-09-29Synced from sourceCurrent5h ago | 2026-09-27Synced from sourceCurrent5h ago |
| Language | pythonSeeded, unreviewedwritten 1mo ago | pythonSeeded, unreviewedwritten 1mo ago | pythonSeeded, unreviewedwritten 1mo ago |
| Licence | MITSynced from sourceCurrent5h ago | MITSynced from sourceCurrent5h ago | MITSynced from sourceCurrent5h ago |
| Archived | noSynced from sourceCurrent5h ago | noSynced from sourceCurrent5h ago | noSynced from sourceCurrent5h ago |
| Category | multi-agentSeeded, unreviewedwritten 1mo ago | structured-outputSeeded, unreviewedwritten 1mo ago | structured-outputSeeded, unreviewedwritten 1mo ago |
| Contributors | 340Synced from sourceCurrent5h ago | 610Synced from sourceCurrent5h ago | 267Synced from sourceCurrent5h ago |
| Forks | 8598Synced from sourceCurrent5h ago | 2810Synced from sourceCurrent5h ago | 1274Synced from sourceCurrent5h ago |
| Maintainer | CrewAISeeded, unreviewedwritten 1mo ago | PydanticSeeded, unreviewedwritten 1mo ago | 567 LabsSeeded, unreviewedwritten 1mo ago |
| Open issues | 508Synced from sourceCurrent5h ago | 1137Synced from sourceCurrent5h ago | 117Synced from sourceCurrent5h ago |
| PyPI downloads, monthly | — | 13478631Synced from sourceStale1mo ago· past SLA | 27671654Synced from sourceStale1mo ago· past SLA |
| PyPI downloads, weekly | — | 3076771Synced from sourceStale1mo ago· past SLA | 13080962Synced from sourceStale1mo ago· past SLA |
| PyPI package | crewaiSynced from sourceCurrent5h ago | pydantic-aiSynced from sourceCurrent5h ago | instructorSynced from sourceCurrent5h ago |
| PyPI released | 2026-09-28T21:15:33.691987ZSynced from sourceCurrent5h ago | 2026-09-25T23:32:17.554286ZSynced from sourceCurrent5h ago | 2026-09-09T02:25:54.888746ZSynced from sourceCurrent5h ago |
| Requires Python | <3.14,>=3.10Synced from sourceCurrent5h ago | >=3.10Synced from sourceCurrent5h ago | <4.0,>=3.9Synced from sourceCurrent5h ago |
| PyPI version | 1.15.23Synced from sourceCurrent5h ago | 2.51.0Synced from sourceCurrent5h ago | 1.17.0Synced from sourceCurrent5h ago |
| Repository | https://github.com/crewAIInc/crewAISynced from sourceCurrent5h ago | https://github.com/pydantic/pydantic-aiSynced from sourceCurrent5h ago | https://github.com/567-labs/instructorSynced from sourceCurrent5h ago |
Sources: GitHub REST API, npm registry downloads, PyPI registry metadata, pypistats.org downloads. Most recent observation 5h 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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