Compare frameworks
Vercel AI SDK vs Mastra vs LangGraph
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 | Mastra | LangGraph |
|---|---|---|---|
| Stars | 27,805Synced from sourceCurrent3h ago | 29,400Synced from sourceCurrent3h ago | 44,631 (highest of the compared values)Synced from sourceCurrent3h ago |
| downloads | 45,262,880 (highest of the compared values)Synced from sourceCurrent3h ago | 3,150,478Synced from sourceCurrent3h ago | 4,881,657Synced from sourceCurrent3h ago |
| Last commit | 2026-11-07Synced from sourceCurrent3h ago | 2026-11-08Synced from sourceCurrent3h ago | 2026-11-08Synced from sourceCurrent3h ago |
| Language | typescriptSeeded, unreviewedwritten 2mo ago | typescriptSeeded, unreviewedwritten 2mo ago | pythonSeeded, unreviewedwritten 2mo ago |
| Licence | — | — | MITSynced from sourceCurrent3h ago |
| Archived | noSynced from sourceCurrent3h ago | noSynced from sourceCurrent3h ago | noSynced from sourceCurrent3h ago |
| Category | orchestrationSeeded, unreviewedwritten 2mo ago | orchestrationSeeded, unreviewedwritten 2mo ago | orchestrationSeeded, unreviewedwritten 2mo ago |
| Contributors | 783Synced from sourceCurrent3h ago | 701Synced from sourceCurrent3h ago | 294Synced from sourceCurrent3h ago |
| Forks | 5549Synced from sourceCurrent3h ago | 3085Synced from sourceCurrent3h ago | 7690Synced from sourceCurrent3h ago |
| Maintainer | VercelSeeded, unreviewedwritten 2mo ago | MastraSeeded, unreviewedwritten 2mo ago | LangChainSeeded, unreviewedwritten 2mo ago |
| npm downloads, monthly | 145134192Synced from sourceCurrent3h ago | 10391822Synced from sourceCurrent3h ago | 16705433Synced from sourceCurrent3h ago |
| npm downloads, weekly | 45262880Synced from sourceCurrent3h ago | 3150478Synced from sourceCurrent3h ago | 4881657Synced from sourceCurrent3h ago |
| npm package | aiSynced from sourceCurrent3h ago | @mastra/coreSynced from sourceCurrent3h ago | @langchain/langgraphSynced from sourceCurrent3h ago |
| npm window ends | 2026-11-06Synced from sourceCurrent3h ago | 2026-11-06Synced from sourceCurrent3h ago | 2026-11-06Synced from sourceCurrent3h ago |
| Open issues | 1505Synced from sourceCurrent3h ago | 820Synced from sourceCurrent3h ago | 475Synced from sourceCurrent3h ago |
| PyPI package | — | — | langgraphSynced from sourceCurrent3h ago |
| PyPI released | — | — | 2026-11-05T02:20:37.999716ZSynced from sourceCurrent3h ago |
| Requires Python | — | — | >=3.10Synced from sourceCurrent3h ago |
| PyPI version | — | — | 1.2.20Synced from sourceCurrent3h ago |
| Repository | https://github.com/vercel/aiSynced from sourceCurrent3h ago | https://github.com/mastra-ai/mastraSynced from sourceCurrent3h ago | https://github.com/langchain-ai/langgraphSynced 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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