What is the main difference between Zod and Yup?

Zod is a TypeScript-first schema validation library that infers static types directly from your schemas, eliminating duplicate type definitions. Yup is a JavaScript schema validation library with TypeScript support added later — types are less precise and often require manual annotation. Zod is smaller, faster, and has better TypeScript integration.

When should I use Zod vs Yup?

Choose Zod for TypeScript projects — it provides better type inference, is more commonly used with modern frameworks (React Hook Form, tRPC, Next.js Server Actions), and has become the standard for schema validation in the TypeScript ecosystem. Choose Yup if you have existing Yup schemas, or work in a JavaScript (not TypeScript) project where Yup's mature API is sufficient.

Is Zod better than Yup for TypeScript?

Yes, for TypeScript projects Zod is generally preferred. Zod's type inference is more precise and ergonomic — you define your schema once and get both validation logic and TypeScript types automatically. Yup requires more manual type annotation and its inferred types can be less accurate. Zod has also become the defacto choice in the TypeScript ecosystem as of 2026.

Free Tool · GitHub Archive · 30-day data

Zod vs Yup Comparison

Zod vs Yup: type inference, bundle size, async validation, DX. Real GitHub adoption and which TypeScript schema library to pick.

colinhacks/zod Zod Recent public evaluation signal

jquense/yup Yup Recent public evaluation signal

Zod vs Yup: which should you choose?

Zod has largely displaced Yup in TypeScript projects thanks to its superior type inference — your schema IS your TypeScript type. Yup still has a larger install base from older React projects. Real evaluation signals show where new TypeScript development is trending.

A higher intent score means more developers are actively testing, forking, and contributing to that project right now. It’s the closest proxy we have to “which is gaining traction” without access to private usage data.

How the comparison works

This tool surfaces real developer evaluation activity from the last 30 days — PRs opened, issues filed, forks, and code pushes from non-team contributors. We run the same GitHub Archive query for both repos simultaneously (results cached 24h per repo), weight PRs (50%), issues (30%), and forks (20%) over stars, filter bots, and produce a 0–100 intent score. See the winner, score gap, and which developers are evaluating.

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