Compare frameworks
Semantic Kernel vs LlamaIndex vs Vercel AI SDK
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 | Semantic Kernel | LlamaIndex | Vercel AI SDK |
|---|---|---|---|
| Stars | 28,608Synced from sourceCurrent4h ago | 52,334 (highest of the compared values)Synced from sourceCurrent4h ago | 27,001Synced from sourceCurrent4h ago |
| downloads | — | 149,503Synced from sourceCurrent4h ago | 29,813,554 (highest of the compared values)Synced from sourceCurrent4h ago |
| Last commit | 2026-09-19Synced from sourceCurrent4h ago | 2026-09-27Synced from sourceCurrent4h ago | 2026-09-28Synced from sourceCurrent4h ago |
| Language | csharpSeeded, unreviewedwritten 1mo ago | pythonSeeded, unreviewedwritten 1mo ago | typescriptSeeded, unreviewedwritten 1mo ago |
| Licence | MITSynced from sourceCurrent4h ago | MITSynced from sourceCurrent4h ago | — |
| Archived | noSynced from sourceCurrent4h ago | noSynced from sourceCurrent4h ago | noSynced from sourceCurrent4h ago |
| Category | orchestrationSeeded, unreviewedwritten 1mo ago | ragSeeded, unreviewedwritten 1mo ago | orchestrationSeeded, unreviewedwritten 1mo ago |
| Contributors | 416Synced from sourceCurrent4h ago | 2001Synced from sourceCurrent4h ago | 719Synced from sourceCurrent4h ago |
| Forks | 4793Synced from sourceCurrent4h ago | 8232Synced from sourceCurrent4h ago | 5207Synced from sourceCurrent4h ago |
| Maintainer | MicrosoftSeeded, unreviewedwritten 1mo ago | LlamaIndexSeeded, unreviewedwritten 1mo ago | VercelSeeded, unreviewedwritten 1mo ago |
| npm downloads, monthly | — | 445795Synced from sourceCurrent4h ago | 92989638Synced from sourceCurrent4h ago |
| npm downloads, weekly | — | 149503Synced from sourceCurrent4h ago | 29813554Synced from sourceCurrent4h ago |
| npm package | — | llamaindexSynced from sourceCurrent4h ago | aiSynced from sourceCurrent4h ago |
| npm window ends | — | 2026-09-26Synced from sourceCurrent4h ago | 2026-09-26Synced from sourceCurrent4h ago |
| Open issues | 338Synced from sourceCurrent4h ago | 896Synced from sourceCurrent4h ago | 1450Synced from sourceCurrent4h ago |
| PyPI package | semantic-kernelSynced from sourceCurrent4h ago | llama-indexSynced from sourceCurrent4h ago | — |
| PyPI released | 2026-08-06T09:56:42.518861ZSynced from sourceCurrent4h ago | 2026-09-21T16:22:20.056831ZSynced from sourceCurrent4h ago | — |
| Requires Python | >=3.10Synced from sourceCurrent4h ago | <4.0,>=3.10Synced from sourceCurrent4h ago | — |
| PyPI version | 1.44.1Synced from sourceCurrent4h ago | 0.14.25Synced from sourceCurrent4h ago | — |
| Repository | https://github.com/microsoft/semantic-kernelSynced from sourceCurrent4h ago | https://github.com/run-llama/llama_indexSynced from sourceCurrent4h ago | https://github.com/vercel/aiSynced 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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