axios vs ky
Which should you use? A side-by-side look at what each one does, who it suits, what it costs, how hard it is to set up, and where each falls short.
Open source · MIT
A promise-based HTTP client that works in both browsers and Node.js.
Open source · MIT
A tiny HTTP client for JavaScript that wraps the Fetch API with simpler calls and error handling.
The short answer
Choose axios if you need…
- JavaScript developers calling REST or other HTTP APIs from a browser front end
- Node.js developers who want one HTTP client API across client and server code
- Teams that want a widely used, MIT-licensed library with a large community
Choose ky if you need…
- JavaScript or TypeScript developers who already use fetch and want less boilerplate
- Projects that call a REST API and want JSON parsing and error handling in one call
- Developers who want a small package with no dependencies
- Teams that want typed responses or validation with Zod or Valibot via Standard Schema
Side-by-side
| axios | ky | |
|---|---|---|
| Type | Library | Library |
| Price | Free and open source | Free and open source |
| Licence | MIT | MIT |
| GitHub stars | 109k | 17.1k |
| Setup difficulty | Beginner | Beginner |
| How you get it | Install with a package manager | Install with a package manager |
| Main language | JavaScript | TypeScript |
| Last code update | 4 days ago | 28 days ago |
What each one is
axios
Axios is a JavaScript library for making HTTP requests, such as fetching data from a web API or sending form data to a server. It uses promises, so you can write asynchronous request code with async/await or .then() chains. The same API works in browser apps and in Node.js servers, which is why developers reach for it.
ky
Ky is a small JavaScript library for making HTTP requests, such as loading data from or sending data to a web server. It builds on the browser's built-in fetch function and adds conveniences like JSON handling, automatic retries, timeouts, and treating error status codes as errors. The README says it has no dependencies and works in modern browsers, Node.js, Bun, and Deno.
Best for
axios
- JavaScript developers calling REST or other HTTP APIs from a browser front end
- Node.js developers who want one HTTP client API across client and server code
- Teams that want a widely used, MIT-licensed library with a large community
ky
- JavaScript or TypeScript developers who already use fetch and want less boilerplate
- Projects that call a REST API and want JSON parsing and error handling in one call
- Developers who want a small package with no dependencies
- Teams that want typed responses or validation with Zod or Valibot via Standard Schema
Strengths
axios
- Same API for browser and Node.js environments
- Promise-based, which fits modern async/await code
- MIT licensed with a very large user base (about 109k GitHub stars)
ky
- Small package with no dependencies, according to the README
- Adds retries, timeouts, hooks, and error handling on top of plain fetch
- Typed responses: .json() defaults to unknown rather than any
Not ideal for
axios
- Developers who only need a built-in fetch call and want zero dependencies, since the browser and Node.js already offer fetch
- Non-programmers looking for an end-user app; this is a code library, not a tool with a interface
- Projects that need a non-JavaScript language; the README covers only JavaScript usage
ky
- People who are not writing JavaScript or TypeScript code, since this is a code library
- Projects that need a feature the README does not mention, such as a built-in cookie jar, because the README does not cover that
- Anyone needing to support environments without fetch support, since Ky is built on the Fetch API
Trade-offs
axios
- The README notes a security-update notice for Axios v0, so version choice matters for maintenance
- Adds an external dependency where built-in fetch might be enough
- README is truncated here, so detailed API behavior is not fully confirmed from this source
ky
- Requires a runtime with fetch support, so it is not a fit for older environments
- The README describes the next version of Ky, so the docs may differ from the version most people install
- Some features, such as streaming request bodies, depend on browser support the README describes as limited
Getting started
Frequently asked questions
What is the difference between axios and ky?
axios: A promise-based HTTP client that works in both browsers and Node.js. ky: A tiny HTTP client for JavaScript that wraps the Fetch API with simpler calls and error handling. axios suits javascript developers calling rest or other http apis from a browser front end, while ky suits javascript or typescript developers who already use fetch and want less boilerplate.
Are axios and ky free?
axios: Free and open source. ky: Free and open source.
Is axios or ky more popular?
axios has more GitHub stars (109k) than ky (17.1k). Popularity isn't the same as fit — check which one matches your use case above.
What are other alternatives to axios and ky?
Other options people compare them with include got, superagent, window.fetch polyfill, TanStack Query, SwiftyJSON.
Keep comparing
Built from our catalogue entries for both products: open-source details come from each project's README (AI-assisted, refreshed weekly) and GitHub data; AI-tool details are editorial. Spotted something wrong? Let us know from either product's page.