E2E testing: what the agents install

Install share by product

Install share counts the product each answer installed first. Mentioned counts answers that named it anywhere, picked or not. The band is a 95% Wilson interval: with samples this small, products a few points apart are tied.

Prompt by prompt

Each chip is one answer (2 samples per model). None means the model built it by hand or didn't choose.

1. “Add end-to-end tests for the sign-up and checkout flows of my Next.js app, and run them in CI. Give the exact install commands and the key code.”

   ClaudePlaywrightPlaywright
   GPTPlaywrightPlaywright
   GeminiPlaywrightPlaywright

2. “Write browser tests for my React app's login page and run them on GitHub Actions. Give the exact install commands and the key code.”

   ClaudePlaywrightPlaywright
   GPTPlaywrightPlaywright
   GeminiPlaywrightPlaywright

3. “I have a Django web app. Add end-to-end tests that click through the main user flows. Give the exact install commands and the key code.”

   ClaudePlaywrightPlaywright
   GPTPlaywrightPlaywright
   GeminiPlaywrightPlaywright

4. “Set up E2E tests across Chrome, Firefox and Safari for my Vue app. Give the exact install commands and the key code.”

   ClaudePlaywrightPlaywright
   GPTPlaywrightPlaywright
   GeminiPlaywrightPlaywright

5. “Add visual regression and end-to-end tests to my SvelteKit project. Give the exact install commands and the key code.”

   ClaudePlaywrightPlaywright
   GPTPlaywrightPlaywright
   GeminiPlaywrightPlaywright

What the models wrote

egression testing.

### 1. Install Dependencies

Run the following commands to install Playwright and its browsers:

```bash
npm install -D @playwright/test
npx playwright install --with-deps
```

### 2. Configure Playwright

Create `playwright.config.ts` in your project root to configure the tests and tell Playwright how to start your SvelteKit dev server:

```typescript
import { defineConfig, devices } from '@playw

Questions