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What is Mastra?
Open source TypeScript framework for building, observing and improving AI agents Mastra is a TypeScript framework for building AI agents, plus a hosted platform to run and watch them.
Our verdict
TypeScript-native agents, workflows, memory and evals in one framework, with a free hosted tier and public usage prices, make it easy to try on a real project.
Full review
Mastra is a TypeScript framework for building AI agents, plus a hosted platform to run and watch them. In code you define agents (instructions, model, tools), typed workflows with steps, retries and branches, memory, and a server. The site also lists a harness for multi-mode agents with shared state, which it says is the same one behind Mastra Code, and tooling for MCP.
The hosted side is built around observability. The Mastra Platform shows traces, metrics and logs for each agent run, and an evals area has experiments, scorers and datasets so you can score runs on things like correct tool choice. The GitHub repo (mastra-ai/mastra) showed 28.6k stars on the site when I checked.
Platform pricing is usage based. Starter is $0 a month with 100K observability events, 24 CPU hours and 15 days of retention. Teams is $250 a month with 1M events, 250 CPU hours, 6 months
Mastra is a TypeScript framework for building AI agents, plus a hosted platform to run and watch them. In code you define agents (instructions, model, tools), typed workflows with steps, retries and branches, memory, and a server. The site also lists a harness for multi-mode agents with shared state, which it says is the same one behind Mastra Code, and tooling for MCP.
The hosted side is built around observability. The Mastra Platform shows traces, metrics and logs for each agent run, and an evals area has experiments, scorers and datasets so you can score runs on things like correct tool choice. The GitHub repo (mastra-ai/mastra) showed 28.6k stars on the site when I checked.
Platform pricing is usage based. Starter is $0 a month with 100K observability events, 24 CPU hours and 15 days of retention. Teams is $250 a month with 1M events, 250 CPU hours, 6 months of retention, SSO and SOC 2 docs. Enterprise is custom. A Self-Hosted option is listed separately, and gateway tokens are billed at market rate plus 5.5%.
It suits TypeScript teams that want agent code in their own repo rather than a no-code builder. I did not build an agent with it, and I did not verify the open source license terms, so check those on the site.
Who it's for
Best for
- TypeScript and Node developers building production AI agents who want observability and evals alongside the code.
Not ideal for
- Non-developers
- Python-first teams
- or anyone who wants a visual agent builder.
How we tested
AppsInsight desk research by Deepika Pandey, October 5, 2026. Sources: mastra.ai and mastra.ai/pricing. I did not build or deploy an agent; features and prices are as published by Mastra. License terms not verified.
What's new
Listed from the public site; releases are on GitHub (mastra-ai/mastra/releases).
At a glance
| Pricing | Free+Paid |
|---|---|
| Starting price | $0 |
| Free plan | Yes |
| Free trial | No |
| Pricing page | View pricing |
| Platforms | Web app, API / SDK, CLI / Terminal |
| API | No |
| Company | Mastra |
| Apps Insight Score | 40/100 |
| Implementation | Easy |
| Learning curve | Intermediate |
Why this app scored 40/100
Editorial Review 23/30
- Product quality 7/10 7/10
- Ease of use 3/5 3/5
- Feature depth 4/5 4/5
- Innovation 4/5 4/5
- Value for money 3/3 3/3
- Recommendation confidence 2/2 2/2
Trust & Verification 4/25
- AppsInsight badge installed Badge not installed 0/15
- HTTPS website HTTPS 1/1
- Business support email Missing 0/1
- Privacy policy published Missing 0/2
- Terms of service published Missing 0/1
- Security certifications None listed 0/2
- Knowledge base / help center Provided 2/2
- Social profiles linked 3 profiles linked 1/1
Community 0/20
- Verified reviews & rating 0 reviews (5 needed) 0/15
- Recent reviews No reviews yet 0/5
Product Profile 10/20
- Detailed description 210 words 2/3
- Screenshots 2 screenshots 1/3
- Demo video No demo video 0/2
- FAQ 4 items 1/2
- Feature list 7 items 1/2
- Pricing published Plan tiers published 3/3
- Pros & cons Pros & cons listed 1/1
- Integrations 1 integration 0/2
- API available No 0/1
- Company details 3 of 3 details filled 1/1
Freshness 3/5
- Listing recently updated Updated 0 days ago 3/3
- Recent changelog entry No changelog entries 0/2
Editorial points are assigned by AppsInsight editors and cannot be purchased or influenced.
Integrations
Built for
How Mastra compares
| Feature | Mastra | Grain | OpenClaw | Decagon |
|---|---|---|---|---|
| Rating | 4.0 / 5 | 5.0 / 5 | 5.0 / 5 | 5.0 / 5 |
| Pricing | Free+Paid | Free plan | — | — |
| Starting price | $0 | Free | — | — |
| Free plan | Included | Included | No | No |
| Free trial | No | No | No | No |
| Platforms | Web app, API / SDK, CLI / Terminal | Web app, Browser extension, iOS (iPhone & iPad), Android, macOS, Windows, Linux | macOS, Windows, Linux | Web app |
| Best for | TypeScript and Node developers building production AI agents who want observability and evals alongside the code. | Sales teams, customer success teams, founders, agencies, ops teams, AI-first teams | Developers, solo founders, technical operators, AI enthusiasts, marketing agencies, SMB teams, support teams, internal ops teams | Enterprise SaaS teams, CX operations leaders, customer support automation teams, product-led companies, ops-heavy support organizations |
Key features
Typed agents
Define agents with instructions, a model and tools in TypeScript.
Workflows
Compose typed steps, retries and branches into production workflows.
Memory
Message history, semantic recall and observational memory options.
Harness
Coordinate multi-mode agents with shared state, threads and storage.
Observability
Traces, metrics and logs for each agent run on the Mastra Platform.
Evals
Experiments, scorers and datasets for scoring agent runs.
MCP support
Tools and MCP listed among the core building blocks.
Key benefits
- Agents live in your own TypeScript codebase.
- Observability and evals built in.
- Free Starter tier on the hosted platform.
Pricing
Free planPaid from $0
Solo
Starter
$0 /mo
- 100K observability events
- then $10/100K;24 CPU hours
- then $0.35/hr;15 days data retention;Unlimited users
- deployments and projects
Team
Teams
$250 /mo
- 1M observability events
- then $8/100K;250 CPU hours
- then $0.25/hr;6 months data retention;Multiple teams
- SSO and SOC 2 docs
Enterprise
Enterprise
Custom /mo
- Custom volume and retention;RBAC and audit logs;Support and uptime SLAs;Dedicated support engineer
Pros & Cons
Pros
- Public usage-based pricing with a $0 Starter plan.
- Open source repo with an active GitHub following.
- Covers agents, workflows, memory and evals together.
Cons
- TypeScript only, so Python teams need another route.
- Usage meters (events, CPU hours, storage) make cost harder to predict.
- Developer product, with no visual builder.
Screenshots & media
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Frequently asked questions
What is Mastra?
A TypeScript framework for building AI agents with workflows, memory, evals and observability, plus a hosted platform.
Is Mastra free?
The framework is open source on GitHub and the Mastra Platform has a $0 Starter plan with usage limits.
How much does the Teams plan cost?
$250 a month with 1M observability events and 250 CPU hours, plus usage beyond that.
Can I self-host?
The pricing page lists a Self-Hosted option separately from the Mastra Platform; check the site for license terms.