Quick Info
About Mastra
| AI Engine / Model: | Proprietary / Multi-Model AI Engine with dynamic routing across OpenAI, Anthropic, Google, and local models |
| API: | Yes - REST API available and fully documented |
| Platforms: | Web, macOS, Linux, Windows, API |
| Commercial Rights: | Available on paid plans (Teams & Enterprise); framework is open source under Apache 2.0 |
| Arabic Language Support: | Partial - depends on connected models (supports Arabic via GPT-4o, Claude, Gemini) |
Mastra Factory is a comprehensive development platform for shipping AI agents in TypeScript, developed by Mastra, a US-based company. The platform emerged as an open-source framework (Apache 2.0) before expanding into a commercial cloud offering (Mastra Cloud) with monthly subscription tiers. Its core mission is to move agents from prototype to production by providing memory, tools, MCP protocol, and full observability.
Architecture and Core Components
Mastra employs a layered architecture that separates the orchestration layer from the model layer and storage layer. At its heart lies the Agent Framework, which supports tool calling, short- and long-term memory, and multi-step reasoning. This means an agent doesn't just respond—it plans, executes, and self-corrects.
Workflow Engine
The engine natively supports branching, chaining, and human-in-the-loop steps. This design makes Mastra suitable for building automated systems that require human approval at critical points, such as financial transaction approval or content review before publishing.
Built-in RAG Support
The platform includes full support for Retrieval-Augmented Generation (RAG) through chunking, embeddings, and integrations with various vector stores. This enables building agents that answer questions based on enterprise-specific knowledge bases without external tools.
Model Routing and Observability
Mastra supports dynamic routing across model providers (OpenAI, Anthropic, Google, local models), allowing optimization of cost and speed. The platform also provides built-in observability and evals, with deployment to Mastra Cloud for managing production agents.
Performance and Integration
Written in TypeScript, Mastra integrates seamlessly with modern web applications (Next.js, Node.js) and REST APIs. It supports both self-hosted and cloud deployment, giving teams flexibility in choosing their runtime environment. The free tier is relatively generous (100K observability events, 24 CPU hours/month) but imposes data retention limits (15 days only).
Key Features of Mastra
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Pros and Cons of Mastra
Pros
- Fully open-source framework (Apache 2.0) with self-hosting capability
- Native TypeScript support integrating seamlessly with Next.js and Node.js
- Powerful workflow engine with human-in-the-loop steps
- Built-in RAG support eliminating external tooling
- Flexible model routing across multiple providers for cost optimization
- Built-in observability and evals for production
- Relatively generous free tier for individual developers
Cons
- ✕Data retention limited to 15 days on the free plan
- ✕Arabic language support is not native and depends on connected models
- ✕Moderate to high learning curve for developers unfamiliar with agent systems
- ✕Free tier limited to 24 CPU hours per month
- ✕Documentation may be less comprehensive than competing frameworks like LangChain
- ✕No native mobile apps (iOS/Android)
Supported Platforms
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Pricing Information
| Plan | Price | Limits & Quota | Commercial Use |
|---|---|---|---|
| Starter (Free) | $0 / month | 100K observability events (+$10/100K), 24 CPU hours (+$0.35/hr), 15-day retention, unlimited users, deployments, and projects | Yes (with limits) |
| Teams | $250 / month | 1M observability events (+$8/100K), 250 CPU hours (+$0.25/hr), 6-month retention, multiple teams, SSO, SOC 2 docs | Yes |
| Enterprise | Custom pricing | Custom volume and retention, RBAC, audit logs, support and uptime SLAs, dedicated support engineer | Yes |
Summary: Mastra offers a generous free tier for individual developers with limits on observability, CPU time, and data retention. The Teams plan at $250/month targets growing teams with advanced security and collaboration features. Enterprise is custom-priced for large organizations with full support and SLAs.
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