Get 100% human participants or twice your money back

If any AI agents are detected in your research studies, we’ll pay you twice the cost of those non-human participants back.

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Get 100% human participants, or twice your money back for any AI agent we miss.

We’ve spent years building the infrastructure to verify our participants are human

That's why we're backing our participant verification with this guarantee.

ID verification

Every participant must pass bank-grade ID verification, including regular re-verification requests.

50+ onboarding checks

Before qualifying for any studies, each participant must pass over 50 quality and identity checks.

AI bot detection

Any non-human behavior is picked up at onboarding and in studies with bot authenticity checks.

How the 100% Human Guarantee works

Every qualifying study is automatically covered by the 100% Human Guarantee. Here’s how to qualify.

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Use Qualtrics & Prolific

Set up your study using the popular Qualtrics and Prolific integration.

Enable Bot authenticity checks

Set up Bot authenticity checks for your study. These detect AI agents with 100% accuracy in testing.

Launch your study on Prolific

Set your study live and start collecting participant responses. A new Bot authenticity check column will show you AI detection results.

Check for “low authenticity” submissions

If any participant is flagged as “low authenticity” by our Bot authenticity checks, we’ll send you twice what you’d pay for that participant in Prolific credits.

Read the full Terms and Conditions

Learn more about the 100% Human Guarantee

How does the refund work?

If one or more participants are flagged as “low authenticity” in your qualifying study, we will automatically add credits to the same workspace that published the study within 21 days of the participant completing the submission.

Credits issued under the guarantee can only be used on future Prolific studies and are non-transferable for cash or withdrawal.

Which detection methods does Prolific accept as proof that a participant wasn’t human?

Only studies with Bot authenticity checks enabled are accepted, as they are the most reliable and validated method for detecting AI agents on Prolific. In our testing, other methods don’t meet the same standards of accuracy and unfairly flag human participants.

We also do not accept Prolific’s LLM authenticity checks as part of this guarantee, as they were not designed to detect AI agents specifically. Learn more about Prolific's authenticity checks.

Can I use research platforms other than Qualtrics and Prolific?

At this time, Bot authenticity checks only work on studies using the highly popular Qualtrics and Prolific integration. In future we hope to expand Bot authenticity checks to other platforms, but for now the guarantee will only apply to studies using this combination of tools.

How do I qualify for the guarantee?

Every study that uses the following set up will automatically qualify for the 100% Human Guarantee:

Qualtrics and Prolific must be used together to run your study.
Prolific’s Bot authenticity checks must be enabled (find out how).
Set your study live and start collecting participant responses. A new Bot authenticity check column will show you AI detection results.

Read the full Terms and Conditions.

I have more questions about the guarantee

Please read our handy help center article. Our friendly support team are also on hand to help if you need anything. Contact them through the chatbot in the bottom right corner of the help center.
Read our Terms and Conditions here.

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