storybook vs kit

storybook and kit share 4 technologies: Vite, Svelte, valibot, and @standard-schema/spec. storybook is written in TypeScript and kit in JavaScript.

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What they share and what sets them apart

storybookjs

storybook

Storybook is the industry standard workshop for building, documenting, and testing UI components in isolation

TypeScript91.5kRead on November 4, 2026, at commit f6d12acWhat is storybook built with?

Only in storybook

In common

Only in kit

Side by side

SizeLines written by people and agents, without generated ones; code files, without tests.
storybook729,169 lines written2,969 code files
kit109,906 lines written251 code files
Who writes itA commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
storybook40% of its commits signed by AIWith Claude Code, Cursor, GitHub Copilot, CodeRabbit, Codex, and Amp
kit0.9% of its commits signed by AIWith GitHub Copilot, Claude Code, and Codex
ActivityFrom GitHub and its history, on the day SeeRepo read it.
storybookLast push November 4, 202663,422 commits91,452 stars
kitLast push November 5, 20267,738 commits20,902 stars
TestsThe files that test the code, and the share of code files a test imports.
storybook1,128 test files35.9% of its code files have a test that imports them
kit2,114 test files49% of its code files have a test that imports them

Frequently asked questions

Which is bigger, storybook or kit?
storybook, with 729,169 lines written; kit has 109,906.

The proof: storybookjs/storybook's code at commit f6d12ac

Which has more GitHub stars, storybook or kit?
storybook, with 91,452 stars; kit has 20,902.

The proof: storybookjs/storybook on GitHub

Which has more tests, storybook or kit?
kit, with 2,114 test files; storybook has 1,128.

The proof: sveltejs/kit's code at commit decaf66

Which was updated more recently, storybook or kit?
kit: its last push was on November 5, 2026, and storybook's on November 4, 2026.

The proof: sveltejs/kit's commits on GitHub

Which has more commits signed by AI, storybook or kit?
storybook: an AI signed 40% of its commits, with Claude Code, Cursor, GitHub Copilot, CodeRabbit, Codex, and Amp; in kit, 0.9%.

The proof: the commits each tool signed in storybookjs/storybook

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