Dhi – 520x faster data validation for Python, 77x faster for TypeScript
Hi HN! I built dhi, a data validation library that uses Zig to compile to both native C (Python) and SIMD WASM (TypeScript). Key points: - Drop-in API compatibility with Pydantic (Python) and Zod (TypeScript) - Python: 24.9M validations/sec (520x faster than Pydantic V2) - TypeScript: up to 77x faster than Zod on invalid data - 28KB WASM bundle, zero JS runtime overhead I'd love feedback on the API surface, benchmarks, and real-world integration pain points. If you're curious, the repo has full benchmarks and examples.
Dhi – 520x faster data validation for Python, 77x faster for TypeScript launched on January 26, 2026 with 5 votes, #3,400 of 14,584 launches that month and more than 75% of that year's launches.
What it does
⚡ Ultra-fast data validation for Python & TypeScript. Drop-in Pydantic/Zod replacement powered by Zig + SIMD WASM. - justrach/dhi
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