fastify vs @hapi/hapi

fastify is downloaded 5.2× more often than @hapi/hapi (31,079,568 vs 6,014,914 per month), so it has the larger community and more answered questions online. Both projects are actively maintained.

Metricfastify@hapi/hapi
Weekly downloads7,307,661✓1,448,062
Monthly downloads31,079,568✓6,014,914
GitHub stars36,351✓14,786
Minified size471.7 kB—
Minified + gzipped129.8 kB—
Dependencies15—
Open issues14661✓
Last commit2026-06-01✓2026-05-06
Latest version5.8.521.4.9
LicenseMITBSD-3-Clause

When to choose which

fastify

A fast, low-overhead framework with schema validation.

Choose it when: High-throughput APIs where you want JSON-schema validation, structured logging and first-class TypeScript.

  • + Very high performance
  • + Schema validation built-in
  • + Great TypeScript
  • - Smaller ecosystem than Express
  • - Plugin model to learn

@hapi/hapi

A configuration-centric framework with built-in validation.

Choose it when: Config-driven apps that want validation, auth and caching as first-class, built-in concepts.

  • + Built-in validation & auth
  • + Config over code
  • + Stable
  • - Smaller community now
  • - More verbose

Feature comparison

Featurefastify@hapi/hapi
PhilosophyMinimal+Config-driven
TypeScript-first✓ YesPartial
PerformanceVery highModerate
Built-in featuresValidation, loggingValidation, auth, cache
EcosystemLargeMedium

fastify

Fast and low overhead web framework, for Node.js

DetailsGitHubnpm

@hapi/hapi

HTTP Server framework

DetailsGitHubnpm

Related comparisons

express vs fastifyexpress vs @hapi/hapifastify vs koafastify vs @nestjs/corefastify vs hono@hapi/hapi vs koa@hapi/hapi vs @nestjs/core@hapi/hapi vs hono

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Data from npm, Bundlephobia and GitHub. Last updated 2026-06-02.