Compare frameworks
CrewAI vs Letta vs Agno
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 | CrewAI | Letta | Agno |
|---|---|---|---|
| Stars | 59,111 (highest of the compared values)Synced from sourceCurrent4h ago | 24,923Synced from sourceCurrent4h ago | 42,358Synced from sourceCurrent4h ago |
| downloads | — | — | 520,626Synced from sourceStale1mo ago· past SLA |
| Last commit | 2026-09-27Synced from sourceCurrent4h ago | 2026-09-10Synced from sourceCurrent4h ago | 2026-09-28Synced from sourceCurrent4h ago |
| Language | pythonSeeded, unreviewedwritten 1mo ago | pythonSeeded, unreviewedwritten 1mo ago | pythonSeeded, unreviewedwritten 1mo ago |
| Licence | MITSynced from sourceCurrent4h ago | Apache-2.0Synced from sourceCurrent4h ago | Apache-2.0Synced from sourceCurrent4h ago |
| Archived | noSynced from sourceCurrent4h ago | noSynced from sourceCurrent4h ago | noSynced from sourceCurrent4h ago |
| Category | multi-agentSeeded, unreviewedwritten 1mo ago | memorySeeded, unreviewedwritten 1mo ago | orchestrationSeeded, unreviewedwritten 1mo ago |
| Contributors | 340Synced from sourceCurrent4h ago | 155Synced from sourceCurrent4h ago | 585Synced from sourceCurrent4h ago |
| Forks | 8585Synced from sourceCurrent4h ago | 2631Synced from sourceCurrent4h ago | 6023Synced from sourceCurrent4h ago |
| Maintainer | CrewAISeeded, unreviewedwritten 1mo ago | LettaSeeded, unreviewedwritten 1mo ago | AgnoSeeded, unreviewedwritten 1mo ago |
| Open issues | 506Synced from sourceCurrent4h ago | 0Synced from sourceCurrent4h ago | 1689Synced from sourceCurrent4h ago |
| PyPI downloads, monthly | — | — | 2183543Synced from sourceStale1mo ago· past SLA |
| PyPI downloads, weekly | — | — | 520626Synced from sourceStale1mo ago· past SLA |
| PyPI package | crewaiSynced from sourceCurrent4h ago | lettaSynced from sourceCurrent4h ago | agnoSynced from sourceCurrent4h ago |
| PyPI released | 2026-09-16T22:10:41.471882ZSynced from sourceCurrent4h ago | 2026-09-28T04:32:31.896015ZSynced from sourceCurrent4h ago | 2026-09-23T13:15:37.685447ZSynced from sourceCurrent4h ago |
| Requires Python | <3.14,>=3.10Synced from sourceCurrent4h ago | >=3.9Synced from sourceCurrent4h ago | <4,>=3.9Synced from sourceCurrent4h ago |
| PyPI version | 1.15.22Synced from sourceCurrent4h ago | 0.33.5Synced from sourceCurrent4h ago | 3.0.11Synced from sourceCurrent4h ago |
| Repository | https://github.com/crewAIInc/crewAISynced from sourceCurrent4h ago | https://github.com/letta-ai/lettaSynced from sourceCurrent4h ago | https://github.com/agno-agi/agnoSynced 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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