Compare frameworks
AutoGen vs LlamaIndex 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 | AutoGen | LlamaIndex | Letta |
|---|---|---|---|
| Stars | 61,130 (highest of the compared values)Synced from sourceCurrent3h ago | 52,306Synced from sourceCurrent3h ago | 24,864Synced from sourceCurrent3h ago |
| downloads | 47,487Synced from sourceAging6d ago | 83,631 (highest of the compared values)Synced from sourceCurrent3h ago | — |
| Last commit | 2026-04-15Synced from sourceCurrent3h ago | 2026-09-24Synced from sourceCurrent3h ago | 2026-09-10Synced from sourceCurrent3h ago |
| Language | pythonSeeded, unreviewedwritten 1mo ago | pythonSeeded, unreviewedwritten 1mo ago | pythonSeeded, unreviewedwritten 1mo ago |
| Licence | CC-BY-4.0Synced from sourceCurrent3h ago | MITSynced from sourceCurrent3h ago | Apache-2.0Synced from sourceCurrent3h ago |
| Archived | noSynced from sourceCurrent3h ago | noSynced from sourceCurrent3h ago | noSynced from sourceCurrent3h ago |
| Category | multi-agentSeeded, unreviewedwritten 1mo ago | ragSeeded, unreviewedwritten 1mo ago | memorySeeded, unreviewedwritten 1mo ago |
| Contributors | 534Synced from sourceCurrent3h ago | 1999Synced from sourceCurrent3h ago | 155Synced from sourceCurrent3h ago |
| Forks | 9246Synced from sourceCurrent3h ago | 8203Synced from sourceCurrent3h ago | 2628Synced from sourceCurrent3h ago |
| Maintainer | MicrosoftSeeded, unreviewedwritten 1mo ago | LlamaIndexSeeded, unreviewedwritten 1mo ago | LettaSeeded, unreviewedwritten 1mo ago |
| npm downloads, monthly | — | 429018Synced from sourceCurrent3h ago | — |
| npm downloads, weekly | — | 83631Synced from sourceCurrent3h ago | — |
| npm package | — | llamaindexSynced from sourceCurrent3h ago | — |
| npm window ends | — | 2026-09-21Synced from sourceCurrent3h ago | — |
| Open issues | 1098Synced from sourceCurrent3h ago | 849Synced from sourceCurrent3h ago | 0Synced from sourceCurrent3h ago |
| PyPI downloads, monthly | 263297Synced from sourceAging6d ago | — | — |
| PyPI downloads, weekly | 47487Synced from sourceAging6d ago | — | — |
| PyPI package | pyautogenSynced from sourceCurrent3h ago | llama-indexSynced from sourceCurrent3h ago | lettaSynced from sourceCurrent3h ago |
| PyPI released | 2025-07-15T00:37:26.170442ZSynced from sourceCurrent3h ago | 2026-09-21T16:22:20.056831ZSynced from sourceCurrent3h ago | 2026-09-23T23:59:05.225455ZSynced from sourceCurrent3h ago |
| Requires Python | >=3.10Synced from sourceCurrent3h ago | <4.0,>=3.10Synced from sourceCurrent3h ago | >=3.9Synced from sourceCurrent3h ago |
| PyPI version | 0.10.0Synced from sourceCurrent3h ago | 0.14.25Synced from sourceCurrent3h ago | 0.33.0Synced from sourceCurrent3h ago |
| Repository | https://github.com/microsoft/autogenSynced from sourceCurrent3h ago | https://github.com/run-llama/llama_indexSynced 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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