Compare frameworks
smolagents vs Letta 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 | smolagents | Letta | LangChain |
|---|---|---|---|
| Stars | 29,463Synced from sourceCurrent3h ago | 24,864Synced from sourceCurrent3h ago | 146,956 (highest of the compared values)Synced from sourceCurrent3h ago |
| downloads | 132,630Synced from sourceStale1mo ago· past SLA | — | 2,026,447 (highest of the compared values)Synced from sourceCurrent3h ago |
| Last commit | 2026-09-23Synced from sourceCurrent3h ago | 2026-09-10Synced from sourceCurrent3h ago | 2026-09-24Synced from sourceCurrent3h ago |
| Language | pythonSeeded, unreviewedwritten 1mo ago | pythonSeeded, unreviewedwritten 1mo ago | pythonSeeded, unreviewedwritten 1mo ago |
| Licence | Apache-2.0Synced from sourceCurrent3h ago | Apache-2.0Synced from sourceCurrent3h ago | MITSynced from sourceCurrent3h ago |
| Archived | noSynced from sourceCurrent3h ago | noSynced from sourceCurrent3h ago | noSynced from sourceCurrent3h ago |
| Category | multi-agentSeeded, unreviewedwritten 1mo ago | memorySeeded, unreviewedwritten 1mo ago | orchestrationSeeded, unreviewedwritten 1mo ago |
| Contributors | 208Synced from sourceCurrent3h ago | 155Synced from sourceCurrent3h ago | 3740Synced from sourceCurrent3h ago |
| Forks | 2991Synced from sourceCurrent3h ago | 2628Synced from sourceCurrent3h ago | 24587Synced from sourceCurrent3h ago |
| Maintainer | Hugging FaceSeeded, unreviewedwritten 1mo ago | LettaSeeded, unreviewedwritten 1mo ago | LangChainSeeded, unreviewedwritten 1mo ago |
| npm downloads, monthly | — | — | 10553700Synced from sourceCurrent3h ago |
| npm downloads, weekly | — | — | 2026447Synced from sourceCurrent3h ago |
| npm package | — | — | langchainSynced from sourceCurrent3h ago |
| npm window ends | — | — | 2026-09-21Synced from sourceCurrent3h ago |
| Open issues | 827Synced from sourceCurrent3h ago | 0Synced from sourceCurrent3h ago | 561Synced from sourceCurrent3h ago |
| PyPI downloads, monthly | 614573Synced from sourceStale1mo ago· past SLA | — | — |
| PyPI downloads, weekly | 132630Synced from sourceStale1mo ago· past SLA | — | — |
| PyPI package | smolagentsSynced from sourceCurrent3h ago | lettaSynced from sourceCurrent3h ago | langchainSynced from sourceCurrent3h ago |
| PyPI released | 2026-05-29T05:08:43.280962ZSynced from sourceCurrent3h ago | 2026-09-23T23:59:05.225455ZSynced from sourceCurrent3h ago | 2026-09-18T17:31:10.056247ZSynced from sourceCurrent3h ago |
| Requires Python | >=3.10Synced from sourceCurrent3h ago | >=3.9Synced from sourceCurrent3h ago | <4.0.0,>=3.10.0Synced from sourceCurrent3h ago |
| PyPI version | 1.26.0Synced from sourceCurrent3h ago | 0.33.0Synced from sourceCurrent3h ago | 1.4.2Synced from sourceCurrent3h ago |
| Repository | https://github.com/huggingface/smolagentsSynced from sourceCurrent3h ago | https://github.com/letta-ai/lettaSynced from sourceCurrent3h ago | https://github.com/langchain-ai/langchainSynced 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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