Compare frameworks
Ragas vs Pydantic AI vs LangChain
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 | Ragas | Pydantic AI | LangChain |
|---|---|---|---|
| Stars | 15,834Synced from sourceCurrent4h ago | 20,133Synced from sourceCurrent4h ago | 146,956 (highest of the compared values)Synced from sourceCurrent4h ago |
| downloads | — | 3,076,771 (highest of the compared values)Synced from sourceStale1mo ago· past SLA | 2,026,447Synced from sourceCurrent4h ago |
| Last commit | 2026-02-24Synced from sourceCurrent4h ago | 2026-09-24Synced from sourceCurrent4h ago | 2026-09-24Synced from sourceCurrent4h ago |
| Language | pythonSeeded, unreviewedwritten 1mo ago | pythonSeeded, unreviewedwritten 1mo ago | pythonSeeded, unreviewedwritten 1mo ago |
| Licence | Apache-2.0Synced from sourceCurrent4h ago | MITSynced from sourceCurrent4h ago | MITSynced from sourceCurrent4h ago |
| Archived | noSynced from sourceCurrent4h ago | noSynced from sourceCurrent4h ago | noSynced from sourceCurrent4h ago |
| Category | evaluationSeeded, unreviewedwritten 1mo ago | structured-outputSeeded, unreviewedwritten 1mo ago | orchestrationSeeded, unreviewedwritten 1mo ago |
| Contributors | 246Synced from sourceCurrent4h ago | 589Synced from sourceCurrent4h ago | 3740Synced from sourceCurrent4h ago |
| Forks | 1725Synced from sourceCurrent4h ago | 2768Synced from sourceCurrent4h ago | 24587Synced from sourceCurrent4h ago |
| Maintainer | Vibrant LabsSeeded, unreviewedwritten 1mo ago | PydanticSeeded, unreviewedwritten 1mo ago | LangChainSeeded, unreviewedwritten 1mo ago |
| npm downloads, monthly | — | — | 10553700Synced from sourceCurrent4h ago |
| npm downloads, weekly | — | — | 2026447Synced from sourceCurrent4h ago |
| npm package | — | — | langchainSynced from sourceCurrent4h ago |
| npm window ends | — | — | 2026-09-21Synced from sourceCurrent4h ago |
| Open issues | 607Synced from sourceCurrent4h ago | 965Synced from sourceCurrent4h ago | 561Synced from sourceCurrent4h ago |
| PyPI downloads, monthly | — | 13478631Synced from sourceStale1mo ago· past SLA | — |
| PyPI downloads, weekly | — | 3076771Synced from sourceStale1mo ago· past SLA | — |
| PyPI package | ragasSynced from sourceCurrent4h ago | pydantic-aiSynced from sourceCurrent4h ago | langchainSynced from sourceCurrent4h ago |
| PyPI released | 2026-01-13T17:47:59.200116ZSynced from sourceCurrent4h ago | 2026-09-24T03:23:01.147978ZSynced from sourceCurrent4h ago | 2026-09-18T17:31:10.056247ZSynced from sourceCurrent4h ago |
| Requires Python | >=3.9Synced from sourceCurrent4h ago | >=3.10Synced from sourceCurrent4h ago | <4.0.0,>=3.10.0Synced from sourceCurrent4h ago |
| PyPI version | 0.4.3Synced from sourceCurrent4h ago | 2.49.0Synced from sourceCurrent4h ago | 1.4.2Synced from sourceCurrent4h ago |
| Repository | https://github.com/vibrantlabsai/ragasSynced from sourceCurrent4h ago | https://github.com/pydantic/pydantic-aiSynced from sourceCurrent4h ago | https://github.com/langchain-ai/langchainSynced from sourceCurrent4h ago |
Sources: GitHub REST API, npm registry downloads, PyPI registry metadata, pypistats.org downloads. Most recent observation 4h 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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