Hey API
What ChatGPT, Claude, Gemini & Grok actually say · July 2026
The verdict
Hey API appears in 1 AI-ranked category — best position #5 for openapi sdk generators for typescript and python.
The best open-source choice for the TypeScript-consumer side — generates fully typed clients with pluggable fetch/axios, TanStack Query integration, and Zod schemas from any OpenAPI spec; actively maintained, fast, and free, making it the default for frontend teams consuming an API rather than publishing one.
Where Hey API falls short, per the models
- Claude TypeScript only — no Python — and it produces client bindings, not a polished distributable SDK (no retries/pagination conventions, docs, or release tooling), so it doesn't serve API vendors shipping to third parties.
Top alternatives per the models: Stainless · Speakeasy · Fern · OpenAPI Generator
Watch Hey API
Boards re-poll weekly and the models change their minds. One short email only when Hey API's standing moves — a rank change, a rival overtaking, or new reasoning from the models. Nothing otherwise.
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Hey API ranks #5 for best openapi sdk generators for typescript and python by AI-model consensus. Put the badge in your README, docs or site — it updates automatically as the models re-rank.
[](https://modelsagree.com/best/best-openapi-sdk-generators-for-typescript-and-python?utm_source=badge&utm_medium=embed&utm_campaign=badge-hey-api)<a href="https://modelsagree.com/best/best-openapi-sdk-generators-for-typescript-and-python?utm_source=badge&utm_medium=embed&utm_campaign=badge-hey-api"><img src="https://modelsagree.com/badge/hey-api.svg" alt="Hey API — ranked #5 for Best OpenAPI SDK Generators for TypeScript and Python by AI models on ModelsAgree" height="28"></a>Rankings are computed from what the models answer, re-polled weekly · raw reasoning shown verbatim · methodology