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AI Agent Builder vs Mastra

Mastra is a TypeScript framework for AI agents, requiring code, unlike the visual tool here.

Which to pick

Pick AI Agent Builder if you want…

  • End-to-end AI agent creation

Pick Mastra if you want…

  • Typed AI agents with built-in observability
  • TypeScript AI agent framework
  • A free plan to start with (Starter)
  • Open-source code (mastra-ai/mastra on GitHub)

Side by side

What it is
AI Agent Builder:AI Agent Builder lets you build, test, and deploy AI agents and workflows with access to over 100 APIs.
Mastra:Mastra is an open-source TypeScript framework for building AI agents with memory, tools, workflows and observability.
Best for
AI Agent Builder:End-to-end AI agent creation
Mastra:Typed AI agents with built-in observability
Who it’s for
AI Agent Builder:Developers and businesses needing custom AI agents and automation
Mastra:TypeScript developers building AI-powered applications and agents.
Pricing
AI Agent Builder:Paid
Mastra:Freemium
Plans
AI Agent Builder:Premium $250
Mastra:Starter $0 per month · Teams $250 per month
Open source
AI Agent Builder:—
Mastra:Yes, 28,481 GitHub stars
Works with
AI Agent Builder:—
Mastra:React, Next.js, Node, LibSQL, Postgres, Vite

AI Agent Builder features

  • Agent Builder. Design AI agents using a visual interface without coding
  • Testing Suite. Run automated tests on agents before deployment
  • Production Deployment. Deploy agents directly to production environments
  • API Integrations. Connect agents to 100+ external APIs and services
  • Secure Purchase. Simple, secure checkout with domain verification

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 Agent Builder vs Mastra FAQ

Is AI Agent Builder or Mastra free?+

AI Agent Builder is paid. Mastra has a free plan (Starter); paid plans start at $250/month (Teams).

Is AI Agent Builder or Mastra open source?+

Mastra is open source (mastra-ai/mastra on GitHub). DevHunt has no public source repository on record for AI Agent Builder.

On DevHunt

AI Agent Builder

0 upvotes · Launched on DevHunt on Jan 6, 2026

Based on each tool's website and DevHunt data. Details may change; check the official sites.