Verified participants for training AI models
A recruitment panel for AI teams who need diverse, verified humans for model training, RLHF, red-teaming, and evaluation at scale.

Complete the form and pick a time that works for you. Our team will review your research needs and guide you to the best approach.
A recruitment panel for AI teams who need diverse, verified humans for model training, RLHF, red-teaming, and evaluation at scale.


AI teams need human feedback that's diverse and delivered at the speed of model development. Get access to 4M+ verified testers across demographics, expertise levels, and geographic regions. Run RLHF, red-teaming, and evaluation studies with participants who are provably 100% human.



Human evaluation at scale keeps your models accurate. Recruit testers for preference labeling, adversarial testing, and factual verification. Testers are verified, screened, at begin to match with your project within 15 minutes.

Get human feedback as fast as you can use it. Our platform screens and matches testers within 15 minutes so your training runs move at speed.

Your pre-release model outputs, training prompts, and evaluation data are competitive IP. Ensure confidentiality with automated NDA enforcement and access controls that prevent leaks before your model hits production.

Want to see how our panel and recruit tools work? Book a call with our team to talk through your use case and understand how Respondent can help you find the participants you need.
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Rated 4.6 from 400+ reviews on G2.com

Director, Research and Testing - Instrument
We tested out a few platforms and quickly realized that Respondent was getting us good people fast. That’s frankly all we need.

Lead UX Researcher - Chili Piper
Respondent helps me easily find the exactly-right participants for my projects. Further, it works for any type of research project with any kind of participant.

GVP, Research at Huge
The participants have been who they say they are, we can verify them, and they're super responsive. Respondent has helped us do better research and be better researchers.
Respondent offers great-value participant recruitment for all types of AI training. Custom rates available based on methodology and volume.
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Rated 4.6 from 400+ reviews on G2.com

Director, Research and Testing - Instrument
We tested out a few platforms and quickly realized that Respondent was getting us good people fast. That’s frankly all we need.

Lead UX Researcher - Chili Piper
Respondent helps me easily find the exactly-right participants for my projects. Further, it works for any type of research project with any kind of participant.

GVP, Research at Huge
The participants have been who they say they are, we can verify them, and they're super responsive. Respondent has helped us do better research and be better researchers.
Respondent is the fastest way to recruit, screen, and pay research participants - all in the same place