Compare
AI SDK vs Mastra
AI SDK is a Vercel-focused TypeScript toolkit for AI apps, whereas Mastra offers a broader agent lifecycle and self-hosted platform.
Which to pick
Pick AI SDK if you want…
- Framework-agnostic TypeScript AI SDK
- Vercel-centric AI apps
- A free, open-source tool
- Integrations with Vue, Svelte or Angular (on AI SDK's list, not Mastra's)
Pick Mastra if you want…
- Typed AI agents with built-in observability
- Integrations with Node, LibSQL or Postgres (on Mastra's list, not AI SDK's)
Side by side
- What it is
- AI SDK:A unified TypeScript SDK for building AI apps and agents with streaming, fallbacks, and multi-model support.
- Mastra:Mastra is an open-source TypeScript framework for building AI agents with memory, tools, workflows and observability.
- Best for
- AI SDK:Framework-agnostic TypeScript AI SDK
- Mastra:Typed AI agents with built-in observability
- Who it’s for
- AI SDK:Frontend and backend developers building AI-powered apps with JavaScript/TypeScript.
- Mastra:TypeScript developers building AI-powered applications and agents.
- Pricing
- AI SDK:Open source
- Mastra:Freemium
- Plans
- AI SDK:—
- Mastra:Starter $0 per month · Teams $250 per month
- Open source
- AI SDK:Yes, 27,076 GitHub stars
- Mastra:Yes, 28,481 GitHub stars
- Works with
- AI SDK:React, Next.js, Vue, Svelte, Angular, Node.js, Vercel AI Gateway
- Mastra:React, Next.js, Node, LibSQL, Postgres, Vite
AI SDK features
- Multi-provider support. Switch between AI providers with a single line of code.
- Built-in streaming. Real-time responses work out-of-the-box without custom parsing.
- Fallback handling. Provides reliable production behavior by default.
- AI Gateway compatibility. Route any model through one endpoint via Vercel AI Gateway.
- Framework-agnostic UI hooks. Hooks for React, Next.js, Vue, Svelte, Angular, etc., to build chat and generative interfaces.
- Agent workflow tools. Supports long-running agents that can suspend, resume, and survive function timeouts.
Mastra features
- Typed Agents. Define agents with instructions, models, tools and runtime behavior in TypeScript.
- Workflows. Compose multi-step, retryable, branchable workflows with typed control flow.
- Harness. Coordinate multi-mode agents with shared state, threads and storage.
- Memory. Durable observational memory with semantic recall and thread-aware storage.
- Observability. Logs, metrics, traces, datasets and signals for full runtime insight.
- Server & Studio. Run agents locally or in Mastra Cloud and manage them via a web studio.
AI SDK vs Mastra FAQ
Is AI SDK or Mastra free?+
AI SDK is free and open source. Mastra has a free plan (Starter); paid plans start at $250/month (Teams).
Which is cheaper, AI SDK or Mastra?+
AI SDK is free, so it costs less. Mastra starts at $250/month (Teams).
Is AI SDK or Mastra open source?+
Yes, both are open source: AI SDK (vercel/ai on GitHub) and Mastra (mastra-ai/mastra on GitHub).
Do AI SDK and Mastra integrate with the same tools?+
Partly. Both list React and Next.js. AI SDK also lists Vue, Svelte, Angular, Node.js and 1 more; Mastra also lists Node, LibSQL, Postgres and Vite.
On DevHunt
Based on each tool's website and DevHunt data. Details may change; check the official sites.