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Fine vs Mastra

Fine focuses on building software with AI agents, while Mastra provides a full TypeScript framework with observability and self-hosted deployment.

Short answer: Pick Fine if you want AI-agent software building; pick Mastra if you want typed AI agent framework. Fine is free; Mastra has a free plan, paid from $250/month.

Which to pick

Pick Fine if you want…

  • AI-agent software building

Pick Mastra if you want…

  • Typed AI agent framework

Side by side

What it is
Fine:Build Software with AI Agents.
Mastra:Mastra is an open-source TypeScript framework for building AI-powered agents, workflows, and observability tools.
Best for
Fine:AI-agent software building
Mastra:Typed AI agent framework
Who it’s for
Fine:—
Mastra:TypeScript developers building AI agents and applications
Pricing
Fine:Free
Mastra:Freemium
Starting price
Fine:—
Mastra:$250/month (Teams)
Free plan or trial
Fine:—
Mastra:Free plan (Starter)
Plans
Fine:—
Mastra:Starter $0 per month · Teams $250 per month
Open source
Fine:Yes
Mastra:Yes, 28,378 GitHub stars
Works with
Fine:—
Mastra:React, Next.js, LibSQL, OpenAI, Anthropic, Google, xAI

Fine features

Build Software with AI Agents.

Mastra features

  • Typed Agents. Define agents with instructions, models, tools, and runtime behavior in TypeScript.
  • Composable Workflows. Create multi-step, retryable, branchable workflows with typed control flow.
  • Shared Harness. Coordinate multi-mode agents with shared state, threads, and storage.
  • Durable Memory. Provide observational memory, semantic recall, and thread-aware context.
  • Built-in Observability. Inspect traces, logs, metrics, and signals for every agent run.
  • Mastra Studio. Web UI for building, testing, and managing agents, tools, and workflows.

Fine vs Mastra FAQ

What is the difference between Fine and Mastra?+

Fine focuses on building software with AI agents, while Mastra provides a full TypeScript framework with observability and self-hosted deployment.

Should I use Fine or Mastra?+

Pick Fine if you want AI-agent software building. Pick Mastra if you want typed AI agent framework.

Is Fine or Mastra free?+

Fine is listed as free on DevHunt. Mastra has a free plan (Starter); paid plans start at $250/month (Teams).

Is Fine or Mastra open source?+

Yes, both are open source: Fine (finehq/fine on GitHub) and Mastra (mastra-ai/mastra on GitHub).

On DevHunt

Fine

75 upvotes · Launched on DevHunt on Jan 3, 2023

Mastra

4 upvotes · Launched on DevHunt on Jun 9, 2026

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