Pay thousands, wait weeks, get a CSV back. No way to iterate quickly or catch problems early.
Low-paid, fatigued workers with "get it done" incentives. When something's wrong, you can't trace why.
Homogeneous annotator pools create systematic bias that surfaces when your model hits diverse users.
"Why are there swim trunks in my furniture dataset?" No way to trace errors or prove compliance.
Four fundamental advantages that produce higher quality labeled datasets
Forget burned-out workers clicking through tasks to hit quotas. Our annotators are everyday people who label data because it's engaging – not because it's their only option for income.
Result: Higher attention per task, lower error rates, consistent throughput.
Every task is routed to multiple annotators with different backgrounds. Our algorithms combine their responses, weighting by historical accuracy, to produce labels with statistical confidence scores.
Result: Labels you can trust, with confidence scores for every decision.
When all your annotators come from one region or demographic, they make the same mistakes. Those errors become systematic biases that surface when your model hits diverse real-world users.
Result: Models that work for all your users, not just those who look like your annotators.
Most labeling services: you send data, wait, get results. No insight into progress, quality, or who made decisions. With Znak, you see everything – and you can iterate in real-time.
Result: Catch problems early, iterate fast, ship confident models.
Get started in minutes, not weeks
Upload your dataset and define labeling instructions. Set consensus requirements, quality thresholds, and add golden tasks for validation.
Watch progress in real-time. Review individual annotations, check agreement rates, and refine instructions based on early results.
Download validated labels with confidence scores and full annotator metadata. Analyze demographic breakdown and agreement patterns.
Create a free account in seconds. No commitments, no minimums. Label whenever you have a few spare minutes.
Swipe through tasks with our intuitive interface. Earn points for accurate labels, build streaks, and climb the leaderboard.
Exchange points for gift cards (Starbucks, Amazon, DoorDash), airline miles, retail discounts, and more.
The data labeling market is broken. We're fixing it with a fundamentally different approach that aligns incentives for quality.
The explosion of AI/ML has created unprecedented demand for labeled data. Companies are spending more than ever, but quality hasn't improved. They're ready to pay premium for a solution that actually works.
Get accurate, auditable labels faster – with the visibility to debug problems and prove compliance
Better labels, less bias, faster
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