Mastra
TypeScript framework for AI agents
FreeAI AgentsFrameworkOpen Source4 impressions
Mastra is an open-source TypeScript framework for building AI agents with memory, tools, workflows and observability.
- for
- TypeScript developers building AI-powered applications and agents.
- pricing
- freemium
- license
- open source
- @mastra/core@1.72.0September 29, 20263 days ago
- @mastra/core@1.71.0September 24, 20268 days ago
- @mastra/core@1.70.0September 24, 20268 days ago
Key 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.
Use cases
- Customer-support chat agents that remember prior interactions.
- Internal copilots for coding, legal or finance tasks.
- Automated multi-step business workflows (e.g., order fulfillment).
- AI-driven SRE bots for monitoring and incident response.
Mastra pricing
- Starter$0/monthObservability events up to 100K · 24 CPU hours · 15-day data retention · Unlimited users, deployments, projects
- Teams$250/monthObservability events up to 1M · 250 CPU hours · 6-month data retention · Multiple teams, SSO, SOC 2 docs
Mastra vs alternatives
 Mastra |  LangChain |  CrewAI |  LlamaIndex |  AI SDK | |
|---|---|---|---|---|---|
| Best for | Typed AI agents with built-in observability | General LLM app development | Coordinating multiple agents | Document-oriented retrieval | Vercel-centric AI apps |
| Pricing | Freemium | Free | Subscription | Free | Free |
| DevHunt upvotes | 0 | 0 | 0 | 0 | 0 |
| Launched | — | — | — | — | — |
- Mastra vs LangChain: LangChain is a broader LLM app framework for Python and JavaScript, while Mastra is TypeScript-first with built-in workflows and observability.
- Mastra vs CrewAI: CrewAI focuses on multi-agent orchestration but lacks Mastra's TypeScript-first SDK and built-in observability suite.
- Mastra vs LlamaIndex: LlamaIndex provides data-centric retrieval over documents, not a full agent framework with memory and workflows.
- Mastra vs AI SDK: AI SDK is a Vercel-focused TypeScript toolkit for AI apps, whereas Mastra offers a broader agent lifecycle and self-hosted platform.
Mastra FAQ
What is Mastra?+
Mastra is an open-source TypeScript framework for building AI-powered applications and agents, providing agents, workflows, memory, workspaces and observability.
Is Mastra an agent builder?+
Yes, it lets you define agents that use LLMs and tools, reason about goals, and iterate until a final answer is produced, plus it offers workflows and observability.
What can you build with Mastra?+
Conversational support bots, domain-specific copilots, and multi-step workflow automations for tasks like onboarding, issue triage, or order processing.
How do I start a new Mastra project?+
Run `npm create mastra@latest <project-name> -- --llm <provider>` then start the dev server with `npx bgproc start -n <project-name> -w -- npm run dev` and open Mastra Studio at http://localhost:4111.
What deployment options are available?+
You can host agents anywhere as a standalone server, use the Mastra Platform (self-hosted or cloud), or deploy on-prem with VPC-isolated instances.
Summarized by DevHunt from mastra.ai · Oct 1, 2026. Details may change; check the official site.
About this listing
DevHunt lists Mastra because developers expect to find it next to the tools in its category. It did not launch on DevHunt. Work on Mastra? Message us to claim this listing.
-(1).png?auto=compress&fit=max&w=64)
