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@hey-api/openapi-ts alternatives

8 packages that do the same job as @hey-api/openapi-ts: openapi-typescript-codegen, @kubb/plugin-client, zod-openapi, chanfana, fastify-zod-openapi, @asteasolutions/zod-to-openapi, openapi-fetch, openapi-react-query. Figures below are from npm, GitHub and Bundlephobia.

Data as of 25 Sept 2026

@hey-api/openapi-ts and 8 alternatives compared

PackageWeekly downloads12-month changeGzipDependenciesLast releaseModuleTypesRuntimes
@hey-api/openapi-ts
This package
3.4m+473%-103 months agoESM onlyBundled-
openapi-typescript-codegen346k+54%-53 months agoCommonJSBundled-
@kubb/plugin-client72.5k--71 month agoESM + CommonJSBundled-
zod-openapi994k+287%-024 days agoESM + CommonJSBundled-
chanfana68.6k+172%-51 month agoESM + CommonJSBundled-
fastify-zod-openapi54.1k+106%-42 months agoESM + CommonJSBundled-
@asteasolutions/zod-to-openapi3m+256%-12 months agoESM + CommonJSBundled-
openapi-fetch6.6m+383%-17 months agoESM + CommonJSBundled-
openapi-react-query327.5k+347%-17 months agoESM + CommonJSBundled-

12-month change compares the average of the last 4 weeks of downloads with the first 4 weeks of the 52-week series. Gzip size is for the whole package (Bundlephobia). Runtimes are taken from each package's own documentation; "-" means not recorded.

openapi-typescript-codegen

Library that generates Typescript clients based on the OpenAPI specification.

Compared with @hey-api/openapi-ts

  • 9.7x fewer weekly downloads (346k vs 3.4m)
  • 5 dependencies vs 10
  • CommonJS vs ESM only
  • Declares no Node.js engine range vs Node.js >=22.18.0
  • Last release 20 Jun 2026 vs 22 Jun 2026
  • 1.6x fewer GitHub stars (3.4k vs 5.4k)
openapi-typescript-codegen package page@hey-api/openapi-ts vs openapi-typescript-codegen

@kubb/plugin-client

API client generator plugin for Kubb, creating type-safe HTTP clients (Axios, Fetch) from OpenAPI specifications for making API requests.

Compared with @hey-api/openapi-ts

  • 47x fewer weekly downloads (72.5k vs 3.4m)
  • 7 dependencies vs 10
  • ESM + CommonJS vs ESM only
  • Declares Node.js >=20 vs Node.js >=22.18.0
  • Last release 4 Aug 2026 vs 22 Jun 2026
  • 3.0x fewer GitHub stars (1.8k vs 5.4k)
@kubb/plugin-client package page

zod-openapi

Convert Zod Schemas to OpenAPI v3.x documentation

Compared with @hey-api/openapi-ts

  • 3.4x fewer weekly downloads (994k vs 3.4m)
  • 0 dependencies vs 10
  • ESM + CommonJS vs ESM only
  • Declares Node.js >=22.14.0 vs Node.js >=22.18.0
  • Last release 31 Aug 2026 vs 22 Jun 2026
  • 8.4x fewer GitHub stars (646 vs 5.4k)
zod-openapi package page@hey-api/openapi-ts vs zod-openapi

chanfana

OpenAPI 3 and 3.1 schema generator and validator for Hono, itty-router and more!

Compared with @hey-api/openapi-ts

  • 49x fewer weekly downloads (68.6k vs 3.4m)
  • 5 dependencies vs 10
  • ESM + CommonJS vs ESM only
  • Declares Node.js >=18 vs Node.js >=22.18.0
  • Last release 17 Aug 2026 vs 22 Jun 2026
  • 7.1x fewer GitHub stars (767 vs 5.4k)
chanfana package page

fastify-zod-openapi

Fastify plugin for zod-openapi

Compared with @hey-api/openapi-ts

  • 62x fewer weekly downloads (54.1k vs 3.4m)
  • 4 dependencies vs 10
  • ESM + CommonJS vs ESM only
  • Declares Node.js >=20 vs Node.js >=22.18.0
  • Last release 20 Jul 2026 vs 22 Jun 2026
  • 45x fewer GitHub stars (122 vs 5.4k)
fastify-zod-openapi package page

@asteasolutions/zod-to-openapi

Builds OpenAPI schemas from Zod schemas

Compared with @hey-api/openapi-ts

  • 1.1x fewer weekly downloads (3m vs 3.4m)
  • 1 dependency vs 10
  • ESM + CommonJS vs ESM only
  • Declares no Node.js engine range vs Node.js >=22.18.0
  • Last release 19 Jul 2026 vs 22 Jun 2026
  • 3.4x fewer GitHub stars (1.6k vs 5.4k)
@asteasolutions/zod-to-openapi package page@hey-api/openapi-ts vs @asteasolutions/zod-to-openapi

openapi-fetch

Fast, type-safe fetch client for your OpenAPI schema. Only 6 kb (min). Works with React, Vue, Svelte, or vanilla JS.

Compared with @hey-api/openapi-ts

  • 1.9x more weekly downloads (6.6m vs 3.4m)
  • 1 dependency vs 10
  • ESM + CommonJS vs ESM only
  • Declares no Node.js engine range vs Node.js >=22.18.0
  • Last release 11 Feb 2026 vs 22 Jun 2026
  • 1.5x more GitHub stars (8.4k vs 5.4k)
openapi-fetch package pageopenapi-fetch vs @hey-api/openapi-ts

openapi-react-query

Fast, type-safe @tanstack/react-query client to work with your OpenAPI schema.

Compared with @hey-api/openapi-ts

  • 10x fewer weekly downloads (327.5k vs 3.4m)
  • 1 dependency vs 10
  • ESM + CommonJS vs ESM only
  • Declares no Node.js engine range vs Node.js >=22.18.0
  • Last release 11 Feb 2026 vs 22 Jun 2026
  • 1.5x more GitHub stars (8.4k vs 5.4k)
openapi-react-query package page
Sources: npm registry, npm downloads API, GitHub API, Bundlephobia. Data fetched 25 Sept 2026.

Indexability: Indexed.