Open-source TypeScript framework for AI agents: agents, workflows, memory, evals and tracing.
Verdict: Mastra is best for typeScript developers building agents and workflows. It is the most-discussed pick for ai agent builder in our Aug 18, 2026–Oct 18, 2026 sample of X and Hacker News posts (7 mentions).
View Mastra on GitHub ↗ Suggest an editOpen-source TypeScript framework for AI agents: agents, workflows, memory, evals and tracing. Source
Platforms: X, Hacker News · Date range: – · Updated Oct 18, 2026
| Use case | MentionsPosts | PositivePos. | Mixed | NegativeNeg. |
|---|---|---|---|---|
| AI agent builder | 7 | 5 | 0 | 1 |
| Open-source AI coding agent | 7 | 5 | 0 | 1 |
Mentions = sampled opinion posts about Mastra on that use-case page. Positive, mixed and negative are counted per point, not per post: they show the posts behind its recurring praise, disputed ("Split") and criticism points. One post can back several points, so these need not add up to the mentions, and the same post can appear under more than one use case. Positive, mixed and negative posts all count toward our feedback threshold.
| Free tier | Open-source core is free Source |
| Paid plans | Free (Apache 2.0); enterprise features licensed Source |
| Platforms | Node.js / TypeScript Source |
| Open source | Yes Source |