Mastra
TypeScript-first agent framework with hosted observability
What is Mastra?
Mastra is an open-source TypeScript framework for building AI agents and workflows, with a hosted cloud for deployment, observability, evals, and a Studio UI for collaboration. Sold to TypeScript/Node developers who do not want to drop into a Python stack (LangChain/LlamaIndex) just to ship agents. Apache 2.0 license makes self-hosting genuinely viable.
Tools for building, hosting, testing, observing, connecting, and giving memory or computer access to AI agents.
See the full Agent Infrastructure guide to compare more tools, buyer criteria, and related workflows.
Use cases to evaluate
Building a customer-facing agent inside a Next.js app
Running multi-step workflows with retries and tracing
Evaluating agent outputs in Studio before deploying
Self-hosting agents in your own VPC under Apache 2.0
Fit to evaluate
TypeScript developers building production agents
Next.js/Express teams adding agent features to existing apps
Startups wanting OSS framework + optional hosted ops
Enterprises needing TS-native agents inside VPC
Business fit
Right for you if your stack is Next.js/Node and you want agents, workflows, memory, and traces in one TS-native package. The free Starter tier gives 100K observability events for prototyping. Skip if your team lives in Python (use LangGraph/LlamaIndex) or if you do not need the hosted Studio/observability and would rather wire OpenTelemetry yourself.
How to evaluate Mastra
Use this category when a business wants agents that do work across tools, APIs, browsers, and data sources.
Confirm the exact workflow
Map Mastra to one concrete workflow first, such as building a customer-facing agent inside a next.js app. Avoid buying before the owner, trigger, output, and success metric are clear.
Check category fit
Compare tool-calling, memory, browser automation, evals, observability, and deployment controls.
Compare practical alternatives
Shortlist Mastra against Orgo, Browser Use, Browserbase so the decision is based on fit, effort, and workflow ownership rather than brand recognition alone.
Validate cost and rollout effort
Self-hosted free under Apache 2.0. Cloud Starter free: 100K obs events, 24 CPU hrs, 15-day retention. Teams $250/mo: 1M events, 250 CPU hrs, SSO, SOC 2 docs. Overages: events $8-10/100K, CPU $0.25-0.35/hr, egress $0.10/GB, memory tokens $10/1M, retrieval storage $20/GB, persistent server $100/project/mo. Enterprise custom. Also confirm implementation time, support needs, and whether the technical setup matches your team.
Compare Mastra with alternatives
Use this quick comparison before booking demos or moving data into a new system.
| Primary workflow | Building a customer-facing agent inside a Next.js app, Running multi-step workflows with retries and tracing |
|---|---|
| Best-fit team | TypeScript developers building production agents, Next.js/Express teams adding agent features to existing apps |
| Implementation effort | Technical setup and maintenance profile |
| Pricing check | Free plan + paid plans |
| Closest alternatives | OrgoBrowser UseBrowserbaseHyperbrowser |
Mastra pricing
| Model | Free plan + paid plans |
|---|---|
| Snapshot | Self-hosted free under Apache 2.0. Cloud Starter free: 100K obs events, 24 CPU hrs, 15-day retention. Teams $250/mo: 1M events, 250 CPU hrs, SSO, SOC 2 docs. Overages: events $8-10/100K, CPU $0.25-0.35/hr, egress $0.10/GB, memory tokens $10/1M, retrieval storage $20/GB, persistent server $100/project/mo. Enterprise custom. |
| Checked |
Common questions about Mastra
What is Mastra?
Mastra is an open-source TypeScript framework for building AI agents and workflows, with a hosted cloud for deployment, observability, evals, and a Studio UI for collaboration. Sold to TypeScript/Node developers who do not want to drop into a Python stack (LangChain/LlamaIndex) just to ship agents. Apache 2.0 license makes self-hosting genuinely viable.
What is Mastra used for?
Common use cases: Building a customer-facing agent inside a Next.js app; Running multi-step workflows with retries and tracing; Evaluating agent outputs in Studio before deploying; Self-hosting agents in your own VPC under Apache 2.0.
How much does Mastra cost?
Self-hosted free under Apache 2.0. Cloud Starter free: 100K obs events, 24 CPU hrs, 15-day retention. Teams $250/mo: 1M events, 250 CPU hrs, SSO, SOC 2 docs. Overages: events $8-10/100K, CPU $0.25-0.35/hr, egress $0.10/GB, memory tokens $10/1M, retrieval storage $20/GB, persistent server $100/project/mo. Enterprise custom.
Who is Mastra best for?
Mastra fits TypeScript developers building production agents, Next.js/Express teams adding agent features to existing apps, Startups wanting OSS framework + optional hosted ops, Enterprises needing TS-native agents inside VPC. Right for you if your stack is Next.js/Node and you want agents, workflows, memory, and traces in one TS-native package. The free Starter tier gives 100K observability events for prototyping. Skip if your team lives in Python (use LangGraph/LlamaIndex) or if you do not need the hosted Studio/observability and would rather wire OpenTelemetry yourself.
What are alternatives to Mastra?
Common alternatives to Mastra include Orgo, Browser Use, Browserbase, Hyperbrowser, Steel, Anchor Browser.