Comparison API

Scalable comparisons and deduplication powered by human judgment via API.

Which image looks higher quality?
Are the items in these listings the same?

Use Cases

Our combination of humans and machine learning is built to solve a wide range of use cases. Our goal is to power innovation, wherever that may be.

Accurate, Powerful Comparison

Powered by a combination of our Scaler community and machine learning, we provide actionable data via our dead-simple API.

Cost-Effective and Flexible

We combine machine learning and our community of Scalers to solve your use cases efficiently and quickly. We're able to solve a variety of use cases, from large-scale deduplication to high-fidelity A/B testing.

Best-in-Class Accuracy

Scale uses a combination of skilled humans, machine learning, and sophisticated quality assurance technology to offer best-in-class accuracy. We like to surprise our customers with our high quality.

Elegant Automation

Unlike solutions that require you to work through CSVs or build UIs, we provide automation through an easy-to-use API. It's never been easier to build human-in-the-loop apps.

We Are Scalable

We are built to handle millions of requests per month. Scale is powered by our distributed team of hard-working Scalers augmented with machine learning technology.

Our effective screening, training, and routing software help ensure that we deliver only the highest quality at scale.

Comparison tasks
Pending
Done

Developer First

We relentlessly focus on providing the best experience possible for developers.

We do all the heavy lifting in the background so you can get started with just a few lines of code.

Explore our docs
client.createComparisonTask({
  callback_url: 'http://www.example.com/callback',
  instruction: 'Are the items in these listings the same?',
  attachments: [
    'https://www.amazon.com/Beats-Solo--Ear-Headphone-Refurbished/dp/B0134KR456',
    'https://www.amazon.com/Beats-Solo-Headphone-Discontinued-Manufacturer/dp/B00ETI275K'
  ],
  attachment_type: 'website',
  choices: ['yes', 'no']
}, (err, task) => {
  // do something with task
});

Scale is trusted by world-class companies.

The world's best and most innovative companies use Scale to power large-scale human operations. We consistently impress with our incredible quality and cost effectiveness.

Pricing

You only pay for what you use. There are no additional costs or termination fees.

On-Demand

Use CaseExpress Urgency
Standard Urgency
Deduplication$0.20 / Comparison$0.08 / Comparison
A/B Comparisons$0.20 / Comparison$0.08 / Comparison
Other$0.20 / Comparison$0.08 / Comparison

Completion times and quality are best-effort for On-Demand users. If you require high volumes and turnaround and quality SLAs, chat with us about our Enterprise Plans.

We’ll even give you 5 free API calls. Create free Account

Enterprise

Custom annual plans for higher volume.

  • Upfront Custom Pricing
  • Quality and Throughput SLAs
  • Individualized Support
  • Dedicated Account Managers