BlogRSS5 posts

• Zod 4.6

  Zod 4.6 is now available, with .validate() for boolean validation, .properties() on z.instanceof(), and six more JSON Schema keywords.

  Sep 9, 2026

• Zod 4.5

  Zod 4.5 is now available, with z.compile() ahead-of-time compilation, up to 9x less memory per schema, and a batch of long-awaited features.

  Aug 28, 2026

• Reducing Zod's memory footprint by an order of magnitude with method memoization

  A bare z.string() retained 7.5kb of heap in Zod 4.4. In Zod 4.5 it retains 784 bytes. One change to where a schema's methods live accounts for nearly all of it.

  Aug 26, 2026

• Introducing z.compile()

  z.compile() walks a schema once and produces a flat, loop-free JavaScript validator that runs far faster than the standard parser. Arrays, unions, and nested or wide objects parse 3 to 7x faster, with identical output and identical errors.

  Aug 25, 2026

• Joining Clerk as an OSS Fellow to work on Zod 4

  Announcing my Clerk OSS Fellowship and what's coming in Zod 4.

  Jun 11, 2024