OpenRouter vs Mastra
A side-by-side comparison to help you choose the right tool.
84
OpenRouter scores higher overall (84/100)
But the best choice depends on your specific needs. Compare below.
| Feature | OpenRouter | Mastra |
|---|---|---|
| Our score | 84 | 80 |
| Pricing | Prepaid credits at provider rates with a 5.5% purchase fee. Free models available with rate limits. No subscription required. | Fully open source under MIT license. No cloud fees. Self-hosted on your own infrastructure. |
| Free plan | Yes | Yes |
| Best for | Developers building apps who want to avoid vendor lock-in to a single LLM provider, Teams experimenting across multiple models with a single billing account, Indie developers and startups that want access to many models without separate provider contracts | TypeScript and Node.js developers who want a structured, production-ready agent framework, Teams building internal AI copilots or customer-facing assistants with full code control, Startups embedding AI capabilities into products that need evals and tracing from day one |
| Platforms | web, api | api, web |
| API | Yes | Yes |
| Languages | en | en |
| Pros |
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| Cons |
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| Get started | Visit site |
- Pricing
- Prepaid credits at provider rates with a 5.5% purchase fee. Free models available with rate limits. No subscription required.
- Free plan
- Yes
- Best for
- Developers building apps who want to avoid vendor lock-in to a single LLM provider, Teams experimenting across multiple models with a single billing account, Indie developers and startups that want access to many models without separate provider contracts
- Platforms
- web, api
- API
- Yes
- Languages
- en
Mastra
80
- Pricing
- Fully open source under MIT license. No cloud fees. Self-hosted on your own infrastructure.
- Free plan
- Yes
- Best for
- TypeScript and Node.js developers who want a structured, production-ready agent framework, Teams building internal AI copilots or customer-facing assistants with full code control, Startups embedding AI capabilities into products that need evals and tracing from day one
- Platforms
- api, web
- API
- Yes
- Languages
- en
84Choose OpenRouter if:
- You are Developers building apps who want to avoid vendor lock-in to a single LLM provider
- You are Teams experimenting across multiple models with a single billing account
- You are Indie developers and startups that want access to many models without separate provider contracts
- You want to start free
80Choose Mastra if:
- You are TypeScript and Node.js developers who want a structured, production-ready agent framework
- You are Teams building internal AI copilots or customer-facing assistants with full code control
- You are Startups embedding AI capabilities into products that need evals and tracing from day one
- You want to start free
FAQ
- What is the difference between OpenRouter and Mastra?
- OpenRouter is unified api gateway giving access to 300+ language models across 60+ providers including gpt, claude, gemini, and llama, with automatic fallbacks, smart provider routing, and cost optimization. Mastra is open-source typescript framework for building production-ready ai agents and multi-step workflows, with a local studio ui, typed zod schemas, built-in evals, and support for suspend/resume human-in-the-loop flows.
- Which is cheaper, OpenRouter or Mastra?
- OpenRouter: Prepaid credits at provider rates with a 5.5% purchase fee. Free models available with rate limits. No subscription required.. Mastra: Fully open source under MIT license. No cloud fees. Self-hosted on your own infrastructure.. OpenRouter has a free plan. Mastra has a free plan.
- Who is OpenRouter best for?
- OpenRouter is best for Developers building apps who want to avoid vendor lock-in to a single LLM provider, Teams experimenting across multiple models with a single billing account, Indie developers and startups that want access to many models without separate provider contracts.
- Who is Mastra best for?
- Mastra is best for TypeScript and Node.js developers who want a structured, production-ready agent framework, Teams building internal AI copilots or customer-facing assistants with full code control, Startups embedding AI capabilities into products that need evals and tracing from day one.