TypeScript developers
Define agents, tools and workflows in a codebase with typed interfaces and version control.
Independent tool overview
Mastra review: features, pricing and alternatives
Build TypeScript AI agents and durable workflows with Mastra’s open-source framework and optional platform services.
Visit the official Mastra site ↗
- Product type
- TypeScript AI agent framework
- License
- Open-source framework under Apache 2.0
- Deployment
- Self-host or Mastra Platform
- Managed meters
- CPU time, observability and optional model services
Overview
What Mastra is
Mastra is a TypeScript framework for building AI agents and applications. Developers define models, instructions, tools, memory and typed workflows in code, run them locally through a server and Studio, and deploy to their chosen environment. Its current site also emphasizes tracing, metrics, evaluations and long-running agent workflows.
The open-source framework is separate from Mastra Platform hosting and observability. That distinction matters for cost and architecture: developers can self-host the framework, while managed services meter CPU time, traces, storage and model-gateway use. The framework gives structure to a program, but your team still designs tool permissions, retry behavior, data retention, model selection and evaluation criteria.
Use cases
Who Mastra is best for
The strongest fit depends on the job you need the product to complete, not the size of its feature list.
Teams running long tasks
Build multi-step processes with persistence, retries and observability rather than one chat completion.
AI product teams
Evaluate model outputs and inspect traces while moving from local development to hosted operation.
Capabilities
Core Mastra features
Agent definitions
Configure instructions, models and tool access as TypeScript modules.
Typed workflows
Compose steps, branches and retries into explicit control flow.
Memory
Store thread context and support recall patterns for stateful agents.
Studio and server
Test locally in Studio and expose agents and workflows through a server.
Observability and evaluation
Trace runs, review logs and metrics, and score behavior against datasets.
Process
How the Mastra workflow works
Step 1
Scaffold a project
Create a TypeScript Mastra app and choose the model provider for one agent.
Step 2
Define tools and steps
Give the agent the minimum required tools and put high-impact actions behind explicit workflow controls.
Step 3
Test locally
Use Studio and evaluation cases for expected tasks, wrong inputs, failures and long-running states.
Step 4
Deploy and monitor
Choose self-hosted or Mastra Platform, then monitor traces, CPU, model usage and data retention.
Cost
Mastra pricing and free plan
The framework is free to self-host. Mastra Platform has a $0 Starter tier, a $250/month Teams tier and custom Enterprise pricing; usage beyond included CPU and observability allowances can be charged separately.
Open-source framework
$0 software fee
Apache 2.0 licensed agent framework.
- Host on your own infrastructure
- Pay model, storage and hosting providers separately
Platform Starter
$0/month plus qualifying overage
Managed entry tier.
- 100,000 observability events and 24 CPU hours included
- 15-day data retention
Platform Teams
$250/month plus qualifying overage
More usage and team controls.
- 1 million events and 250 CPU hours included
- Six-month data retention and SSO
Enterprise
Custom quote
For larger managed or self-hosted organizational requirements.
- Custom retention and volume
- Additional controls and support
Pricing checked . Check current pricing at the source ↗
Assessment
Mastra strengths and limitations
Where it stands out
- TypeScript code and typed workflows make agent behavior reviewable in normal engineering practice.
- Open-source and managed paths let teams choose where to run the application.
- Built-in Studio and observability tools support debugging beyond prompt trial-and-error.
What to consider
- Even the free platform tier has usage-based overage and separately priced model calls.
- Framework adoption requires engineering work for tool security, persistence and production operations.
- Complex agent workflows can be difficult to evaluate without representative datasets and failure cases.
Compare
Mastra alternatives
The right alternative depends on the specific output, workflow, controls and budget your project requires.
Coding
LangChain
A broad code-first agent framework with a large integration ecosystem.
Explore LangChain →Business Operations
n8n
A visual workflow tool when low-code app orchestration is more important than TypeScript ownership.
Explore n8n →Business Operations
Gumloop
A visual AI workflow builder for teams with less interest in maintaining an agent codebase.
Explore Gumloop →Questions
Mastra FAQs
Is Mastra free?
The open-source framework is free to use under Apache 2.0. Its hosted platform starts at $0 with usage allowances and overage.
What language does Mastra use?
It is built for TypeScript and JavaScript applications.
Does Mastra include hosting?
Its optional Platform provides managed deployment and observability, while the framework can be hosted elsewhere.
What should a team test before deployment?
Evaluate tool permissions, step failures, retries, memory behavior, model cost and whether the answers meet real task criteria.
Bottom line
Our Mastra verdict
Mastra fits TypeScript teams that want to own agent logic in code while using integrated workflow and evaluation primitives. Compare managed metering with a self-hosted deployment using one representative workload and its traces.
Visit Mastra website ↗Similar Coding Tools
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