Compare frameworks
Pydantic AI vs Instructor vs CrewAI
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 | Instructor | CrewAI |
|---|---|---|---|
| Stars | 21,085Synced from sourceCurrent3h ago | 14,101Synced from sourceCurrent3h ago | 60,624 (highest of the compared values)Synced from sourceCurrent3h ago |
| downloads | 3,076,771Synced from sourceStale2mo ago· past SLA | 13,080,962 (highest of the compared values)Synced from sourceStale2mo ago· past SLA | — |
| Last commit | 2026-11-08Synced from sourceCurrent3h ago | 2026-11-06Synced from sourceCurrent3h ago | 2026-11-08Synced from sourceCurrent3h ago |
| Language | pythonSeeded, unreviewedwritten 2mo ago | pythonSeeded, unreviewedwritten 2mo ago | pythonSeeded, unreviewedwritten 2mo ago |
| Licence | MITSynced from sourceCurrent3h ago | MITSynced from sourceCurrent3h ago | MITSynced from sourceCurrent3h ago |
| Archived | noSynced from sourceCurrent3h ago | noSynced from sourceCurrent3h ago | noSynced from sourceCurrent3h ago |
| Category | structured-outputSeeded, unreviewedwritten 2mo ago | structured-outputSeeded, unreviewedwritten 2mo ago | multi-agentSeeded, unreviewedwritten 2mo ago |
| Contributors | 658Synced from sourceCurrent3h ago | 268Synced from sourceCurrent3h ago | 367Synced from sourceCurrent3h ago |
| Forks | 3127Synced from sourceCurrent3h ago | 1360Synced from sourceCurrent3h ago | 9090Synced from sourceCurrent3h ago |
| Maintainer | PydanticSeeded, unreviewedwritten 2mo ago | 567 LabsSeeded, unreviewedwritten 2mo ago | CrewAISeeded, unreviewedwritten 2mo ago |
| Open issues | 1825Synced from sourceCurrent3h ago | 11Synced from sourceCurrent3h ago | 1196Synced from sourceCurrent3h ago |
| PyPI downloads, monthly | 13478631Synced from sourceStale2mo ago· past SLA | 27671654Synced from sourceStale2mo ago· past SLA | — |
| PyPI downloads, weekly | 3076771Synced from sourceStale2mo ago· past SLA | 13080962Synced from sourceStale2mo ago· past SLA | — |
| PyPI package | pydantic-aiSynced from sourceCurrent3h ago | instructorSynced from sourceCurrent3h ago | crewaiSynced from sourceCurrent3h ago |
| PyPI released | 2026-11-04T10:28:38.510837ZSynced from sourceCurrent3h ago | 2026-09-09T02:25:54.888746ZSynced from sourceCurrent3h ago | 2026-11-07T02:18:43.372746ZSynced from sourceCurrent3h ago |
| Requires Python | >=3.11Synced from sourceCurrent3h ago | <4.0,>=3.9Synced from sourceCurrent3h ago | <3.14,>=3.10Synced from sourceCurrent3h ago |
| PyPI version | 2.66.0Synced from sourceCurrent3h ago | 1.17.0Synced from sourceCurrent3h ago | 1.15.37Synced from sourceCurrent3h ago |
| Repository | https://github.com/pydantic/pydantic-aiSynced from sourceCurrent3h ago | https://github.com/567-labs/instructorSynced from sourceCurrent3h ago | https://github.com/crewAIInc/crewAISynced from sourceCurrent3h ago |
Sources: GitHub REST API, npm registry downloads, PyPI registry metadata, pypistats.org downloads. Most recent observation 3h 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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