Compare frameworks
LangGraph vs Agno vs Letta
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 | LangGraph | Agno | Letta |
|---|---|---|---|
| Stars | 42,201Synced from sourceCurrent3h ago | 42,325 (highest of the compared values)Synced from sourceCurrent3h ago | 24,864Synced from sourceCurrent3h ago |
| downloads | 2,342,174 (highest of the compared values)Synced from sourceCurrent3h ago | 520,626Synced from sourceStale1mo ago· past SLA | — |
| Last commit | 2026-09-23Synced from sourceCurrent3h ago | 2026-09-23Synced from sourceCurrent3h ago | 2026-09-10Synced from sourceCurrent3h ago |
| Language | pythonSeeded, unreviewedwritten 1mo ago | pythonSeeded, unreviewedwritten 1mo ago | pythonSeeded, unreviewedwritten 1mo ago |
| Licence | MITSynced from sourceCurrent3h ago | Apache-2.0Synced from sourceCurrent3h ago | Apache-2.0Synced from sourceCurrent3h ago |
| Archived | noSynced from sourceCurrent3h ago | noSynced from sourceCurrent3h ago | noSynced from sourceCurrent3h ago |
| Category | orchestrationSeeded, unreviewedwritten 1mo ago | orchestrationSeeded, unreviewedwritten 1mo ago | memorySeeded, unreviewedwritten 1mo ago |
| Contributors | 287Synced from sourceCurrent3h ago | 581Synced from sourceCurrent3h ago | 155Synced from sourceCurrent3h ago |
| Forks | 7139Synced from sourceCurrent3h ago | 5999Synced from sourceCurrent3h ago | 2628Synced from sourceCurrent3h ago |
| Maintainer | LangChainSeeded, unreviewedwritten 1mo ago | AgnoSeeded, unreviewedwritten 1mo ago | LettaSeeded, unreviewedwritten 1mo ago |
| npm downloads, monthly | 12112794Synced from sourceCurrent3h ago | — | — |
| npm downloads, weekly | 2342174Synced from sourceCurrent3h ago | — | — |
| npm package | @langchain/langgraphSynced from sourceCurrent3h ago | — | — |
| npm window ends | 2026-09-21Synced from sourceCurrent3h ago | — | — |
| Open issues | 816Synced from sourceCurrent3h ago | 1611Synced from sourceCurrent3h ago | 0Synced from sourceCurrent3h ago |
| PyPI downloads, monthly | — | 2183543Synced from sourceStale1mo ago· past SLA | — |
| PyPI downloads, weekly | — | 520626Synced from sourceStale1mo ago· past SLA | — |
| PyPI package | langgraphSynced from sourceCurrent3h ago | agnoSynced from sourceCurrent3h ago | lettaSynced from sourceCurrent3h ago |
| PyPI released | 2026-09-21T14:43:28.196799ZSynced from sourceCurrent3h ago | 2026-09-23T13:15:37.685447ZSynced from sourceCurrent3h ago | 2026-09-23T23:59:05.225455ZSynced from sourceCurrent3h ago |
| Requires Python | >=3.10Synced from sourceCurrent3h ago | <4,>=3.9Synced from sourceCurrent3h ago | >=3.9Synced from sourceCurrent3h ago |
| PyPI version | 1.2.12Synced from sourceCurrent3h ago | 3.0.11Synced from sourceCurrent3h ago | 0.33.0Synced from sourceCurrent3h ago |
| Repository | https://github.com/langchain-ai/langgraphSynced from sourceCurrent3h ago | https://github.com/agno-agi/agnoSynced from sourceCurrent3h ago | https://github.com/letta-ai/lettaSynced 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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