Arcjet
Runtime security for AI agents, coding agents and web apps
Free planPaid from $2515-day trial
- API / SDK
- CLI / Terminal
Arcjet vs Mastra
A side-by-side comparison to help you choose.
Arcjet
Arcjet edges ahead on overall rating and fit.
Try Arcjet
Mastra
Open source TypeScript framework for building, observing and improving AI agents
Free planPaid from $0
- Web app
- API / SDK
- CLI / Terminal
Feature comparison
| Arcjet | Mastra | |
|---|---|---|
| Rating | 4.3 / 5 | 4.0 / 5 |
| Pricing | Free+Paid | Free+Paid |
| Starting price | $25 | $0 |
| Free plan | Included | Included |
| Offers free trial | Yes (15 days) | No |
| Platforms | API / SDK, CLI / Terminal | Web app, API / SDK, CLI / Terminal |
| Integrations | Claude | GitHub |
| Best for | Developer teams shipping AI agents or AI-powered features who need guardrails against prompt injection, data leaks and runaway token spend, and who are happy to integrate an SDK. | TypeScript and Node developers building production AI agents who want observability and evals alongside the code. |
| Founded | 2023 | 2024 |
| Company | Arcjet Labs, Inc. | Mastra |