Compare frameworks
Haystack vs Semantic Kernel 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 | Haystack | Semantic Kernel | LlamaIndex |
|---|---|---|---|
| Stars | 26,584Synced from sourceCurrent2h ago | 28,593Synced from sourceCurrent2h ago | 52,306 (highest of the compared values)Synced from sourceCurrent2h ago |
| downloads | — | — | 83,631Synced from sourceCurrent2h ago |
| Last commit | 2026-09-23Synced from sourceCurrent2h ago | 2026-09-19Synced from sourceCurrent2h ago | 2026-09-24Synced from sourceCurrent2h ago |
| Language | pythonSeeded, unreviewedwritten 1mo ago | csharpSeeded, unreviewedwritten 1mo ago | pythonSeeded, unreviewedwritten 1mo ago |
| Licence | Apache-2.0Synced from sourceCurrent2h ago | MITSynced from sourceCurrent2h ago | MITSynced from sourceCurrent2h ago |
| Archived | noSynced from sourceCurrent2h ago | noSynced from sourceCurrent2h ago | noSynced from sourceCurrent2h ago |
| Category | ragSeeded, unreviewedwritten 1mo ago | orchestrationSeeded, unreviewedwritten 1mo ago | ragSeeded, unreviewedwritten 1mo ago |
| Contributors | 475Synced from sourceCurrent2h ago | 416Synced from sourceCurrent2h ago | 1999Synced from sourceCurrent2h ago |
| Forks | 3176Synced from sourceCurrent2h ago | 4787Synced from sourceCurrent2h ago | 8203Synced from sourceCurrent2h ago |
| Maintainer | deepsetSeeded, unreviewedwritten 1mo ago | MicrosoftSeeded, unreviewedwritten 1mo ago | LlamaIndexSeeded, unreviewedwritten 1mo ago |
| npm downloads, monthly | — | — | 429018Synced from sourceCurrent2h ago |
| npm downloads, weekly | — | — | 83631Synced from sourceCurrent2h ago |
| npm package | — | — | llamaindexSynced from sourceCurrent2h ago |
| npm window ends | — | — | 2026-09-21Synced from sourceCurrent2h ago |
| Open issues | 168Synced from sourceCurrent2h ago | 320Synced from sourceCurrent2h ago | 849Synced from sourceCurrent2h ago |
| PyPI package | haystack-aiSynced from sourceCurrent2h ago | semantic-kernelSynced from sourceCurrent2h ago | llama-indexSynced from sourceCurrent2h ago |
| PyPI released | 2026-09-03T09:27:43.312258ZSynced from sourceCurrent2h ago | 2026-08-06T09:56:42.518861ZSynced from sourceCurrent2h ago | 2026-09-21T16:22:20.056831ZSynced from sourceCurrent2h ago |
| Requires Python | >=3.10Synced from sourceCurrent2h ago | >=3.10Synced from sourceCurrent2h ago | <4.0,>=3.10Synced from sourceCurrent2h ago |
| PyPI version | 3.1.1Synced from sourceCurrent2h ago | 1.44.1Synced from sourceCurrent2h ago | 0.14.25Synced from sourceCurrent2h ago |
| Repository | https://github.com/deepset-ai/haystackSynced from sourceCurrent2h ago | https://github.com/microsoft/semantic-kernelSynced from sourceCurrent2h ago | https://github.com/run-llama/llama_indexSynced from sourceCurrent2h ago |
Sources: GitHub REST API, npm registry downloads, PyPI registry metadata, pypistats.org downloads. Most recent observation 2h 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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