JSON Schema to Schema | Schema Benchmarks

Some libraries can convert a JSON Schema back into a library schema at runtime, which is useful when you have an existing JSON Schema and want to validate against it using a typed library.

We benchmark each library against the same input:

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const jsonSchema = {
  type: "object",
  properties: { id: { type: "number" }, name: { type: "string" }, price: { type: "string" } },
  required: ["id", "name", "price"],
};

const schema = z.fromJSONSchema(jsonSchema);

Library	Version	/wk	Mean
`arktype`	`2.2.3`	1.36M	172 μs
`zod`	`4.4.3`	253.96M	79 μs	2.18x
`sury`	`11.0.0-rc.0`	320.77K	5 μs	33.62x

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