Free
- 2 Reviews per month
- 2 Personas per Review
- Chat (up to 3 / Review)
- PDF report (basic)
- AI summary
Radical Personas puts your website, ad, email, or product idea in front of synthetic personas — and returns Scores, reasoned feedback, and a citable PDF report.
Radical Personas is a synthetic user research tool for early-stage marketing, UX, and product feedback.
Traditional UX research averages 42 days and starts at €2,000 per study. With Radical Personas: under 20 minutes and no more than €3 per Review.
Stanford HAI (Park et al., 2024 — preprint, n=1,052): ≈85% replication accuracy, benchmarked against the test-retest reliability of human self-responses. From €29/month — instead of €2,000–€15,000 per study.
New personas join weekly — from a metal-fabrication shop owner to a bank director. Each card opens the full profile.
Eight object types, from a single social media post to an entire website — whatever carries your message, your Personas will review it.
Over 60 synthetic personas ready to use, filterable by Life-World and bias — new ones are added every week. Plus ready-made Criteria templates for every object type.
Scores per criterion, verbatim comments from every Persona, an AI summary, a PDF report — and afterward, you go straight into a conversation with the Personas.
“Three superlatives, zero evidence. Anyone who wants to sell me something needs to argue with more rigor.”
Every Persona stays available after the Review — in character, with memory of what they said. Ask why a Score turned out the way it did, or what would have convinced them. An interview that takes minutes, not weeks.
Synthetic personas complement real user research — they don't replace it (Nielsen Norman Group, 2025).
Radical Personas is a synthetic user research tool from Austria — built by two founders in Linz, with two decades of hands-on persona work behind them.
About us| Comparison point | Generic LLM | Radical Personas | Traditional panel |
|---|---|---|---|
| Persona depth | Usually age, gender, job title | 8 psychological layers (Big Five · biases · Life-Worlds) | Real people, unfiltered |
| Reproducibility | Stochastic (prompt-dependent) | Reproducible, weighted Scores | Depends on the panel |
| Scientific basis | None — whatever you prompt | Stanford HAI · Kahneman · Schmitt et al. | Moderator and participant bias |
| Time to results | Response time: instant | ~20 min to PDF report | Avg. 42 days (Dscout) |
| Cost per Review | Included in your LLM plan | Under €3 per Review | €2,000–€15,000 per study |
| Stakeholder output | Chat log export | PDF report with Scores + AI summary | External report, usually extra |
€2,000 to €15,000 per study, and 42 days on average until you see results.
Source: Dscout
From €29/month. Free to try, no credit card required.
A weak message usually surfaces after weeks in the market. Here, it surfaces in 20 minutes.
A scorecard for every criterion, verbatim comments from each Persona, and an AI summary — formatted for stakeholders, not dashboards.
Independent professionals and small teams from the German-speaking market (DACH) who use Radical Personas in their day-to-day work — from websites to ads to positioning. Quotes translated from German.
I run every new episode past several Personas. I see right away where the message loses people — and sharpen it before the episode goes live.
With Radical Personas, I test ads and posts on matching audiences before they run. That makes my recommendations defensible — I can show why something works.
I had my positioning reflected back to me by very different personalities. I would never have seen those blind spots on my own.
Finally, feedback that comes with reasons — not just “like it” or “don’t like it.” Very valuable for growing my business.
Honest feedback from your target group is hard to come by. With Radical Personas, I have it in minutes — backed by real reasoning, not just a number.
The Personas read my website like a skeptical board: polite in tone, merciless on substance. Exactly the sparring you’d want from colleagues — and never get.
In the Persona test, the young trainee instructor and the mid-career switcher debate our course page at the same time — and they thoroughly disagree. Exactly the friction we need before the season starts, not once the course is underway.
My clients are at a turning point in their careers — one wrong phrase, and interest turns into hesitation. Luckily, the Personas hesitate out loud: they tell me which sentence they get stuck on, and why.
Free plan to try it out — no credit card. More Reviews when you need them. Cancel anytime, no setup fee.
Fair-use policy applies.
All prices excl. VAT (net) · Reverse charge with a valid EU VAT ID · Invoicing in EUR
From €29/month · Free plan, no credit card · Cancel anytime See all plans →
Free plan, no credit card. Try it and see if it fits.
No credit card required · Free plan to try it out