Human Feedback API

Real human feedback, delivered through our API

Launch studies, collect real human feedback, and get results in hours, not days — powered by experts in emotion and psychological measurement.

Model Benchmarks

What qualities are the most important in voice?

As psychologists first, we have the answers.

API Access

Evaluate and Improve Voice AI

Use our Study Runner API to get the highest quality human evals on your voice models. Results in hours, not days.

Why are human evals needed?

Blog

Why Are Human Evals Needed?

Automated metrics only tell part of the story. Learn why human evaluation is essential for building voice AI that truly connects with people.

Coming Soon

RESTful API

Simple endpoints to create and manage evaluation studies programmatically.

High-Quality Ratings

Draw from a worldwide pool of reliable, vetted participants to get unbiased human feedback on your model.

Fast Turnaround

Receive human preference data in hours, not weeks.

Ready to align your voice model?

Speak to the AI experts about evaluations for the subjective metrics that matter

Stay in the loop

Get the latest on empathic AI research, product updates, and company news.

Join the community

Connect with other developers, share projects, and get help from the team.

Join our Discord