Compare frameworks
Letta vs LlamaIndex
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 | Letta | LlamaIndex |
|---|---|---|
| Stars | 25,382Synced from sourceCurrent3h ago | 52,842 (highest of the compared values)Synced from sourceCurrent3h ago |
| downloads | — | 179,093Synced from sourceCurrent3h ago |
| Last commit | 2026-10-18Synced from sourceCurrent3h ago | 2026-11-06Synced from sourceCurrent3h ago |
| Language | pythonSeeded, unreviewedwritten 2mo ago | pythonSeeded, unreviewedwritten 2mo ago |
| Licence | Apache-2.0Synced from sourceCurrent3h ago | MITSynced from sourceCurrent3h ago |
| Archived | noSynced from sourceCurrent3h ago | noSynced from sourceCurrent3h ago |
| Category | memorySeeded, unreviewedwritten 2mo ago | ragSeeded, unreviewedwritten 2mo ago |
| Contributors | 155Synced from sourceCurrent3h ago | 2008Synced from sourceCurrent3h ago |
| Forks | 2667Synced from sourceCurrent3h ago | 8532Synced from sourceCurrent3h ago |
| Maintainer | LettaSeeded, unreviewedwritten 2mo ago | LlamaIndexSeeded, unreviewedwritten 2mo ago |
| npm downloads, monthly | — | 620141Synced from sourceCurrent3h ago |
| npm downloads, weekly | — | 179093Synced from sourceCurrent3h ago |
| npm package | — | llamaindexSynced from sourceCurrent3h ago |
| npm window ends | — | 2026-11-06Synced from sourceCurrent3h ago |
| Open issues | 0Synced from sourceCurrent3h ago | 1320Synced from sourceCurrent3h ago |
| PyPI package | lettaSynced from sourceCurrent3h ago | llama-indexSynced from sourceCurrent3h ago |
| PyPI released | 2026-10-12T20:47:35.858621ZSynced from sourceCurrent3h ago | 2026-09-21T16:22:20.056831ZSynced from sourceCurrent3h ago |
| Requires Python | >=3.9Synced from sourceCurrent3h ago | <4.0,>=3.10Synced from sourceCurrent3h ago |
| PyPI version | 0.34.12Synced from sourceCurrent3h ago | 0.14.25Synced from sourceCurrent3h ago |
| Repository | https://github.com/letta-ai/lettaSynced from sourceCurrent3h ago | https://github.com/run-llama/llama_indexSynced 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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