Fiuto vs Koji
Fiuto vs Koji: what you get with Fiuto
Fiuto writes the study, runs it with AI respondents and real people, recruits when you need it, and reads the results back. From the web app or the coding agent you already build in.Free to start, in minutes, no research experience required.
Fiuto's mark beside Koji's, with "vs" between them.
How it works
Fiuto runs your full research loop
Paste a URL and Fiuto takes it from there. No research experience needed.
What you get with Fiuto
The four differences that change what you can do this afternoon, not a feature checklist.
Does Fiuto run card sorts and first-click tests, or only interviews?
Eighteen methods, not one conversation. Card sort, tree test, first-click, five-second and preference test, click heatmaps, live site and prototype tasks, copy tests, surveys and open text. Eighteen method blocks in all, mixable in one study, on every plan including Free. A scale or a ranking asked inside a conversation is still a conversation. Where someone clicks first, and whether they can find a page in your navigation, only a test answers.
Can I run a real study on Fiuto before I pay anything?
Yes, and the AI comes with it. The free plan needs no card and carries 1 live study a month, 10 responses per study, 600 AI credits a month, and every one of the eighteen methods. AI is metered by credits and never gated by tier, so the assistant that drafts your study works on Free exactly as it works on Pro. Paid plans start at $29 a month when you outgrow it.
Do I need to be a researcher to use Fiuto?
Research does not have to be your job. Fiuto does not assume a research team, a research calendar, or someone whose title says research, and it still works when all three are true. Say what you need to learn, review what Fiuto drafts, and turn your Lovable, Replit, v0, Bolt, Claude Code, Codex or Cursor prototype into a real-user test.
What does Fiuto charge per respondent?
A published participant price. US$7.00 per respondent on the 5-minute band, US$14.00 on 12 minutes, US$21.00 on 20, ordered from the launch page and paid per order outside your AI credits. A reserve covers screen-outs, and whatever it does not use is refunded to the original payment method when the run settles. You know what a run of real people costs before you start it.
Side by side
Every row checked against Koji's own pages in September 2026.
| Fiuto | Koji | |
|---|---|---|
| Free plan | Every method, 1 live study a month, 10 responses per study, 600 AI credits a month, no card. | None published as of September 2026. The entry plan is Insights at €29 a month, and its pricing FAQ answers the try-before-committing question by pointing at that plan. |
| Paid plans | Core $29 and Pro $69 a month, published, flat per account. | Published in full. Insights €29 a month for 29 credits and 5 active studies, Interviews €79 for 79 credits and unlimited studies, Enterprise from €500 a month or €6,000 a year. Extra credits are €1 each. |
| Seats | None. Share with as many people as you like on every plan, including Free. Unlimited editors from Core. | No per-seat price published as of September 2026. Team spaces are listed as an Enterprise feature. |
| Unmoderated methods | 18 method blocks, every one on every plan. Card sort, tree test, first-click, five-second, preference test and click heatmap among them. | The AI interview, with open-ended, scale, single-choice, multiple-choice, ranking and yes-no questions asked inside it, plus surveys on Enterprise. No card sort, tree test, first-click, five-second or preference test. |
| AI moderator | None. Fiuto runs unmoderated studies and AI respondents, not a live moderated interview. | Yes, and it is the product. An AI interviewer by voice, chat or phone that adapts its follow-ups, in 30 or more languages, with outbound calling on Enterprise. |
| AI respondents | Up to five per run before real people see the study, up to two of them experts in conversion, usability, copy or SEO. | Not published as of September 2026. Its AI moderates a real person rather than standing in for one. |
| Study drafting | AI drafts the whole study from your URL and goal, on every plan including Free. | An expert research agent and 50 or more research templates, both listed on every plan including the €29 entry. |
| MCP server | Read and write: create, launch and read results. Seven coding agents. Every plan including Free. | Its homepage says you can run studies from Claude, ChatGPT, Cursor or any MCP client. Its pricing page puts the MCP server and API access on the €79 Interviews plan and above, with custom MCP integration on Enterprise. |
| Recruitment | Prolific's panel of 300,000+ participants across 38+ countries, ordered from the launch page. Or share the link with your own people. | Its pricing page lists access to a global panel of 7M+ participants on every plan, alongside bring your own users, website embeds and branded intake forms. |
| Participant price | US$7.00 per respondent on the 5-minute band, US$14.00 on 12, US$21.00 on 20. The unused screen-out reserve is refunded when the run settles. | The interview is priced, the participant is not. A chat interview costs 1 credit and a voice interview 3, at €1 per credit, and only conversations its AI scores 3 or higher out of 5 are charged. What a panel participant costs on top is not published as of September 2026. |
| Instrumented build | @fiuto/runner is on public npm and attaches to any live URL. Clicks and events come back in the same export as the answers. | Not published as of September 2026. |
| Templates and product memory | 24 curated templates plus the ones you save, on every plan. Fiuto remembers your product, your audience and what you are trying to learn between studies. | 50 or more research templates on every plan, with custom interview templates on Enterprise. Carrying what one study learned into the next is not published as of September 2026. |
Sources: Koji's pricing page and Koji's homepage.
MCP for user research
Your data is yours. Stay in Claude Code
Create, launch, and read back studies over MCP from the coding agent you already build in. Every result is yours, out through a per-study token or MCP, on every plan including Free.
Create studies from
Claude Code
Cursor
Codex
Lovable
v0
Replit
BoltWho fits which tool
Fiuto fits people for whom research is not the job
You are building the thing and you have a question about it you would rather not guess at. Fiuto writes the study, runs it, and hands back findings, and it still serves you when research is your job.
Fiuto fits questions an interview cannot answer
Where people click first, whether they can find a page in your navigation, which of two designs wins, what a headline actually communicates in five seconds. Those are tests, not conversations.
Choose Koji if you want a conversation that follows each person
You want an interviewer that probes on every answer, by voice, chat or phone, in the language each participant speaks. Fiuto does not moderate interviews at all.
Choose Koji if you want the platform to absorb a bad session
You would rather not pay for an interview that wandered or ended early, and you are comfortable letting its AI score each conversation and decide which ones count.
Frequently asked questions
01Is Fiuto a Koji alternative?
It depends on the question you are asking. For AI-moderated interviews by voice, chat or phone, Koji is the specialist and Fiuto does not compete. For everything unmoderated, where people click, what they can find, which design or headline wins, Fiuto runs eighteen methods Koji does not, with a free plan and the AI on it.
02Does Koji have a free plan or a published price?
It publishes its price in full and does not publish a free plan, as of 11 September 2026. Insights is €29 a month for 29 credits and 5 active studies, Interviews is €79 for 79 credits and unlimited studies, and Enterprise starts at €500 a month. Extra credits are €1 each, a chat interview costs 1 credit and a voice interview 3. Fiuto's free plan needs no card and runs 1 live study a month with every method and the AI included, and Core and Pro are $29 and $69 a month on the pricing page.
03Does Koji have an MCP server?
Yes, and it writes as well as reads. Its homepage says you can run studies from Claude, ChatGPT, Cursor or any MCP client, and its pricing page puts the MCP server and API access on the €79 Interviews plan and above, with custom MCP integration on Enterprise. Fiuto's MCP creates, launches and reads back studies from seven coding agents on every plan including Free.
04Does Fiuto have an AI moderator?
No. Koji runs AI-moderated interviews and Fiuto does not. Fiuto runs unmoderated studies, and sends AI respondents through the study first so you get a read in minutes and catch a bad task before real people see it. If a live AI interviewer is the thing you need, Koji is the better tool.
05What does it cost to recruit participants on Fiuto?
US$7.00 per respondent on the 5-minute band, US$14.00 on 12 minutes, and US$21.00 on 20, ordered from the launch page and paid per order outside your AI credits. A reserve covers screen-outs, and whatever the order does not use is refunded to the original payment method when the run settles. You can also share the study link with your own users at no cost.
06Do I need research experience to use Fiuto?
No. Paste your URL and say what you need to learn. Fiuto writes the study, runs it with AI respondents, recruits real people if you want them, and reads the results back into findings and a deck. You review each step before it launches, and it serves the researcher just as well.
07Which methods does Fiuto support?
18 method blocks on every plan: prototype and live website tasks, first-click, click heatmap, five-second tests, preference and design feedback, card sort, tree test, matrix, ranking, rating scales, open text, and copy tests among them.