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.
Fiuto runs your full research loop
Paste a link or describe your product, and Fiuto takes it from there. No research experience needed.
What you get with Fiuto
The full loop, from your editor or the app, without a paid tier standing in front of the integration.
Eighteen methods, mixable in one study
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. Card sort, tree test, first-click, five-second and preference test, click heatmaps, live site and prototype tasks, copy tests, surveys and open text, on every plan including Free. AI interviews are in development.
MCP and API on every plan, including Free
Fiuto's research assistant works in the app, in your coding agent over MCP, and over the API. From Claude Code, Cursor, Codex, Lovable, v0, Replit or Bolt it creates, launches and reads back studies, and none of that waits for a paid plan. Koji's pricing page puts its MCP server and API access on the €79 plan and above.
AI respondents and AI experts before real people, on Free
Up to five AI respondents work through your study first, up to two of them experts in conversion, usability, copy or SEO, so you get a read in minutes and catch a bad task early. Then real people from Prolific's global panel, priced per response with no quote, or your own users by link.
Your data is yours
Raw CSV and JSON export, a per-study API token and MCP access on every plan including Free. Findings, a readout and a deck you can share with as many collaborators as you like.
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. 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. Upgrade, downgrade or cancel from the billing page. | Insights €29 a month for 29 credits and 5 active studies, Interviews €79 for 79 credits, Enterprise from €500 a month. Extra credits are €1 each. |
| Collaborators | Share with as many collaborators as you like on every plan, including Free. | No per-seat price published. 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 | Upcoming. AI interviews are in development, and this row will list them the day they are out of alpha. | An AI interviewer by voice, chat or phone. |
| AI respondents | Up to five per run on every plan including Free, up to two of them experts in conversion, usability, copy or SEO. | Not published. |
| Study drafting | AI drafts the whole study from your URL and goal, on every plan including Free. | An expert research agent and research templates, listed on every plan including the €29 entry. |
| MCP server | Read and write: create, launch and read results from seven coding agents, plus an API, on every plan including Free. | 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 global panel across 38+ countries, priced per response with no quote. Or share the link with your own people. | Access to a global panel on every plan, alongside bring your own users, website embeds and branded intake forms. The interview is priced in credits; what a panel participant costs on top is not published. |
| 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. |
| Templates and product memory | 24 curated templates plus the ones you save, on every plan. Fiuto remembers your product, your audience and what you're trying to learn between studies. | Research templates on every plan, custom interview templates on Enterprise. Carrying what one study learned into the next is not published. |
Sources: Koji's pricing page, checked 11 September 2026 and Koji's homepage, checked 11 September 2026.
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 who build in a coding agent
You work in Claude Code, Cursor, Lovable or v0 and want the study created, launched and read back from there, on the free plan, with no research experience required.
Fiuto fits questions an interview can't answer
Where people click first, whether they can find a page in your navigation, which of two designs wins, what a headline communicates in five seconds. Those are tests, not conversations, and Fiuto runs them end to end in hours.
Choose Koji if a phone or voice conversation is the only method you need
You want an interviewer that probes on every answer by voice, chat or phone, and nothing else beside it. AI interviews are an upcoming Fiuto feature.
Choose Koji if you'd rather pay per interview than per month
You want to buy conversations one credit at a time and let the platform decide which sessions count.
Frequently asked questions
Is Fiuto a Koji alternative?
Yes, for small teams that want the study drafted, run and analysed for them, with the integrations on the free plan. Fiuto runs eighteen unmoderated methods, AI respondents and AI experts on every plan, an MCP and API on Free, panel recruitment with no quote, and exports in every format. AI interviews are in development.
Does Koji have a free plan?
Not as of 11 September 2026. Its entry plan is Insights at €29 a month, and its MCP server and API access start on the €79 Interviews plan. Fiuto's free plan needs no card and runs 1 live study a month with every method, the AI, the MCP and the API included, and Core and Pro are $29 and $69 a month on the pricing page.
Does Fiuto run AI interviews?
AI interviews are an upcoming feature, in development now, and this page will list them the day they are out of alpha. Until then Fiuto runs unmoderated studies, with AI respondents first and real people after.
Can I export my data from Fiuto?
Yes, on every plan including Free. Raw CSV and JSON export, a per-study API token, and the same data over MCP. Your data is yours.
Can I change or cancel my Fiuto plan myself?
Yes. You can upgrade, downgrade, or cancel your subscription at any time from the billing page in the app. Nobody from sales is involved at any step.
Which 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.