AgentOS vs Mastra

A side-by-side look at scores, pricing and features — with RECATOOLS' ASEAN-aware verdict for each.

AgentOS TypeScript agent framework where agents write their own tools Visit Mastra The TypeScript agent framework built by ex-Gatsby engineers Visit
RECATOOLS Score 6.9 / 10 8 / 10
Capability 7 7.5
Value for money 7.5 8
Ease of use 6 8
ASEAN readiness 6 6.5
API quality 7 8
Pricing Open Source Freemium
Free tier
Paid from
Has API
Open source
Free to use
Users
Founded
Maker
Verdict

AgentOS bets on two ideas most agent frameworks don't touch: agents that write their own TypeScript tools mid-task (an LLM judge reviews the spec, then it runs sandboxed in node:vm before joining the permanent toolkit) a...

Mastra filled a real gap — a first-class TypeScript agent framework instead of a Python port — and adoption backs that up: 22,000-plus GitHub stars, 300,000-plus weekly npm downloads, and production users spanning Replit...

Full review → Full review →
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Comparisons cover up to 4 tools. Scores are RECATOOLS editorial assessments; verify current pricing on each vendor's site.