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Cloud pricing is based on device-seconds: the amount of time your tests run on our infrastructure.
  • Zero Setup — Start testing immediately. No DevOps required.
  • Free Tier — Get started with a limited preview at no cost.
  • Pay As You Go — Only pay for the device-seconds you use.

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Get Started

Cloud is the default when you follow the Quickstart guide.

Try the Quickstart

Set your API key and start testing in minutes.

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Parallel Testing Limits

Your account has a set number of license slots that determine how many devices can run simultaneously. You can view your available slots in the TestDriver Dashboard.
When is a slot in use? A license slot is occupied when a test client is connected. As soon as your device is destroyed the slot becomes available immediately.

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Avoiding Slot Conflicts

To prevent tests from failing due to exceeding your license slot limit, we recommend two key configurations:
Limit concurrent tests to match your available license slots:
vitest.config.mjs
import { defineConfig } from 'vitest/config';
import { TestDriver } from 'testdriverai/vitest';

export default defineConfig({
  test: {
    testTimeout: 900000,
    hookTimeout: 900000,
    maxConcurrency: 5, // Set to your license slot limit
    reporters: ['default', TestDriver()],
    setupFiles: ['testdriverai/vitest/setup'],
  },
});
Check your slot count at console.testdriver.ai and set maxConcurrency to that number or lower.
Prevent multiple workflow runs from competing for the same slots by using GitHub’s concurrency controls:
.github/workflows/test.yml
name: Tests

on:
  push:
    branches: [main]
  pull_request:

# Prevent concurrent runs from competing for license slots
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      
      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: '20'
      
      - name: Install dependencies
        run: npm install
      
      - name: Run tests
        run: npx vitest run
        env:
          TD_API_KEY: ${{ secrets.TD_API_KEY }}
The concurrency block ensures:
  • Only one workflow run per branch runs at a time
  • New pushes cancel in-progress runs on the same branch
  • Different branches/PRs can run in parallel (up to your slot limit)

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When to Consider Self-Hosted

Cloud is perfect for getting started and for teams that want zero infrastructure management. However, you might consider Self-Hosted if you:
  • Want to escape per-second billing with a flat license fee
  • Require greater concurrency than offered in Cloud plans
  • Need full control over your infrastructure and privacy
  • Want to use your own AI API keys
  • Require custom hardware configurations
  • Have high test volumes that make self-hosting more economical

Explore Self-Hosted

Learn about self-hosting for unlimited test execution at a flat rate.