Compare frameworks
Vercel AI SDK vs LangChain
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 | Vercel AI SDK | LangChain |
|---|---|---|
| Stars | 26,922Synced from sourceCurrentjust now | 146,956 (highest of the compared values)Synced from sourceCurrentjust now |
| downloads | 17,883,737 (highest of the compared values)Synced from sourceCurrentjust now | 2,026,447Synced from sourceCurrentjust now |
| Last commit | 2026-09-24Synced from sourceCurrentjust now | 2026-09-24Synced from sourceCurrentjust now |
| Language | typescriptSeeded, unreviewedwritten 1mo ago | pythonSeeded, unreviewedwritten 1mo ago |
| Licence | — | MITSynced from sourceCurrentjust now |
| Archived | noSynced from sourceCurrentjust now | noSynced from sourceCurrentjust now |
| Category | orchestrationSeeded, unreviewedwritten 1mo ago | orchestrationSeeded, unreviewedwritten 1mo ago |
| Contributors | 715Synced from sourceCurrentjust now | 3740Synced from sourceCurrentjust now |
| Forks | 5180Synced from sourceCurrentjust now | 24587Synced from sourceCurrentjust now |
| Maintainer | VercelSeeded, unreviewedwritten 1mo ago | LangChainSeeded, unreviewedwritten 1mo ago |
| npm downloads, monthly | 87791075Synced from sourceCurrentjust now | 10553700Synced from sourceCurrentjust now |
| npm downloads, weekly | 17883737Synced from sourceCurrentjust now | 2026447Synced from sourceCurrentjust now |
| npm package | aiSynced from sourceCurrentjust now | langchainSynced from sourceCurrentjust now |
| npm window ends | 2026-09-21Synced from sourceCurrentjust now | 2026-09-21Synced from sourceCurrentjust now |
| Open issues | 1462Synced from sourceCurrentjust now | 561Synced from sourceCurrentjust now |
| PyPI package | — | langchainSynced from sourceCurrentjust now |
| PyPI released | — | 2026-09-18T17:31:10.056247ZSynced from sourceCurrentjust now |
| Requires Python | — | <4.0.0,>=3.10.0Synced from sourceCurrentjust now |
| PyPI version | — | 1.4.2Synced from sourceCurrentjust now |
| Repository | https://github.com/vercel/aiSynced from sourceCurrentjust now | https://github.com/langchain-ai/langchainSynced from sourceCurrentjust now |
Sources: GitHub REST API, npm registry downloads, PyPI registry metadata, pypistats.org downloads. Most recent observation just now. 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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