AI respondents
Get feedback on your product
in minutes
Paste your product URL and get a study built around your audience, then run it with synthetic users. Free to start, no experience required.
A run works through five slots one at a time: four AI respondents, and a fifth slot that can be an AI expert instead.
Get a full run in minutes
Up to five synthetic respondents open your study and answer every block from start to finish, the way a real respondent would. Fix the confusing questions, the missing options, and the dead-end blocks before you run it with real people.
Broken links and empty pages
A prototype link that doesn't open, a website page that won't load without your account, an asset that's still a placeholder.
Screening that sends someone the wrong way
An intake question that routes a respondent somewhere other than the step you meant, before a real one ever hits it.
A flow that doesn't hold together
The handoff from one block to the next, start to finish, the way a respondent would actually move through it.
Questions that don't land the way you meant
An answer, read back per block, showing that a question meant one thing to you and another to whoever answers it.
Swap a slot for a specialist
Use up to two of your five slots for an AI expert instead of an AI respondent. Each expert opens the prototype, website, or design in your study and inspects it through one specialism: Conversion, Usability, Copy, or SEO.
An expert judges the surface, never the study.
Conversion
Opens your surface and judges what helps or costs you a sign-up, a click, or a sale.
Usability
Opens your surface and judges whether someone could use it without help.
Copy
Opens your surface and judges the words: clarity, tone, whether they say what you mean.
SEO
Opens your surface and judges how it reads to search and answer engines.
Synthetic first, then real
AI respondents give you a first read in minutes, while there is still time to change something. Real people give you preferences, behaviour, and quotes you can publish.
Some tools call a run of five a synthetic panel. On Fiuto, panel means the real one: 300,000+ participants from Prolific.
Cost
120 credits a slot. Free's 600 credits a month fund one full run of five.
Paid per order from Prolific, or free when you share the link with your own users.
Speed
Minutes.
Hours to a couple of days.
What you get
A first read: a broken link, a confusing question, a flow that comes apart.
Real preference, real behaviour, and quotes you can publish.
Frequently asked questions
01What is an AI respondent?
One of up to five AI-simulated respondents in a run: a synthetic persona with one profile, built for that run, that opens your study and answers every block the way a person would. Every answer comes back labelled synthetic, so it is never mistaken for a real one.
02Do AI respondents replace real people?
No. They go first, so you see what a run finds before anyone real sees the study. Then real people: recruited from a global panel of 300,000+ participants powered by Prolific, or your own users when you share the link.
03Do I need a paid plan to run them?
No. AI respondents run on every plan, including Free. Credits are the only gate, never your tier: 120 credits a slot, and Free's 600 credits a month fund one full run of five.
04Can I read each respondent's answers?
Yes. Every answer comes back readable per block and labelled synthetic, and the expert's opinion is reported separately from what the respondents did.
05Do they count against my responses per study?
No. A run happens before you launch, so it doesn't use any of your plan's responses per study.
06Can I re-run after fixing the study?
Yes. Edit the study, then start a new run to see whether the fix worked.
Run five AI respondents free.
See what a run finds before anyone real does. Then recruit from Prolific, or share the link with your own users.
Run five AI respondents free