TypeScript toolkit for building AI apps and agents.
Agent frameworks & SDKsopen-source
Vercel AI SDK vs Mastra
Verdict: in our “Best framework for your first agent” ranking, Vercel AI SDK ranks #2 and Mastra ranks #4. The table compares their verified basics; how we rank.
| Feature | Vercel AI SDK | Mastra |
|---|---|---|
| What it is | TypeScript toolkit for building AI apps and agents. | TypeScript framework for AI agents and workflows. |
| Category | Agent frameworks & SDKs | Agent frameworks & SDKs |
| Pricing model | open-source | open-source |
| Integrations | API, MCP | API, MCP |
| Self-hostable | Yes | Yes |
| Open-source repo | vercel/ai | mastra-ai/mastra |
| Rank in “Best framework for your first agent” | #2 | #4 |
| StackRank score | Not yet benchmarked | Not yet benchmarked |
| Last verified | Oct 14, 2026 | Oct 14, 2026 |
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TypeScript framework for AI agents and workflows.
Agent frameworks & SDKsopen-source