DE
EN
Free
Free
- 2 Reviews per month
- 2 Personas per Review
- Chat (up to 3 / Review)
- PDF report (basic)
- AI summary
Use case · Proposal Check (B2B)
Get your proposal tested — honest feedback in about 20 minutes.
Choose from over 60 synthetic personas — realistic profiles of your recipients, from procurement to executive management — and have them review your proposal, quote, or sales document. You get a Score from each one, plain-language reasoning, and a PDF report you can pass on — in about 20 minutes.
Methodologically grounded in established personality and behavioral research — including recent Stanford HAI research (2024). The full study details are in the FAQ.
Synthetic personas complement real client feedback — they don't replace it for the final decision.
- over 60
- Personas to choose from
- ~20 min
- to the finished report
- from €29
- €19 introductory price until July 31 · free plan available
- EU
- hosted (AT / DE)
§ I Foundation
What is a synthetic persona?
Synthetic personas are AI-modeled profiles of your target audience, built with psychological depth. They respond to your content the way a specific type of user would — and deliver reviews with reasoned, quotable feedback in minutes. They complement real user research; they don't replace it.
Every Persona is carefully built — from eight psychological layers, grounded in established personality and behavioral research (including Big Five and Kahneman/Tversky). Not a chatbot thrown together in a hurry.
- 1 Biography Life story, occupation, environment
- 2 Psychology (OCEAN) Personality profile — what makes them tick
- 3 Cognitive Biases Typical reasoning errors and their triggers
- 4 Emotional State Baseline mood and what tips it
- 5 Cultural Context Values, Life-World, cultural background
- 6 Behavior Everyday life, media, decision style
- 7 Anti-Patterns What this person rejects or avoids
- 8 Language Style, dialect, tolerance for anglicisms
“Why not just ask ChatGPT?”
ChatGPT can give you a quick take — and for plenty of things, that's enough. But if you want to test your actual target audience, a fixed frame helps: with Radical Personas, you pick specific, consistent profiles — each with a biography, values, and a decision style — that always judge by the same criteria. That makes results comparable: across multiple Personas and across repeated tests.
Full comparison: Radical Personas vs. ChatGPT →
§ II The difference
Sharpen your proposal before the client says no — not after.
A proposal that misses the recipient's open questions costs sales time and, quite possibly, the deal — and you often only find out when the rejection arrives, or the silence after. With synthetic personas, you get the feedback before the proposal goes out.
Time to result
Waiting for client feedback Days, then a no
Radical Personas about 20 min
Cost per Review
Waiting for client feedback Your sales effort
Radical Personas < €2
Real client feedback still delivers the final decision — a synthetic test doesn't replace that. The time and cost advantage applies above all to sharpening the proposal before it goes out. Comparison illustrative; bars schematic.
Persona voice · example · translated from German 
Markus Huber, 47 Managing director · plastics-engineering SME · synthetic persona
“Show me the numbers — and a company like mine that already has this up and running. A proposal without an open cost breakdown and without a reference is just a sheet of paper I set aside.”
Markus Huber, 47 Managing director · plastics-engineering SME · synthetic persona
§ III The result
What you actually get.
Each selected Persona reads your proposal as its recipient and reviews it along these criteria — with a Score and a reasoned quote on whether they would accept, and why:
- First impression What stands out in the first 10 seconds — and what is the first thought that comes to mind?
- Scope of services Is it clear what the price actually includes — and what it doesn't?
- Price transparency Is the price broken down in a way that makes sense — or is there a lingering sense of hidden extras?
- Clarity Can the proposal be understood without jargon and without having to ask follow-up questions?
- Trust Does the vendor come across as careful and reliable — with references and a clear point of contact?
- Personal fit Does the proposal address the specific request — or does it read like interchangeable boilerplate?
- Terms & conditions Are validity, payment terms, and what happens in case of delays clearly settled?
- Next step Is it clear what to do to accept — and how much effort that would take?
- Overall score An overall Score (1–10) from each Persona's perspective as the recipient.
Optional for B2B proposals: On request, Radical Personas adds four additional decision criteria from the perspective of a co-decision-maker on the buying committee — cost-effectiveness (TCO), integration into existing workflows, vendor reliability, and whether the decision can be defended internally.
What a result looks like
Sample result · translated from German Proposal Check
Markus Huber, 47
Managing director · plastics-engineering SME · synthetic persona
5.5/10
Overall
Scope of services 6.0/10
Price transparency 4.0/10
Trust 7.0/10
Next step 5.0/10
“The scope of services holds up — I can see that right away. But the price is missing a breakdown; I can't see what I'm paying for, and that makes me cautious. Without a company like mine as a reference, I'm not signing this blind.”
AI summary: Several personas confirm the technically solid scope of services but flag the missing price breakdown — for cost-conscious recipients, the most common reason to set a proposal aside instead of accepting it right away.
What would your recipient say about your proposal?
Free plan, no credit card — your first result in about 20 minutes.
The finished report
Your Proposal Check as a PDF that holds up in meetings.
Every Persona Review, the scorecard for each criterion, and the AI summary in one clean report — to share with sales, management, or your client.
§ IV The Personas
Over 60 Personas — choose your target audience.
From the skeptical decision-maker to the price-conscious founder, from young to seasoned — every Persona is a fully developed profile with its own biography, values, and decision style, from the DACH region and beyond. You pick the ones that represent your target audience.
-
Katharina, 39 -
Franz, 48 -
Maria, 38 -
Emina, 23 -
Herbert, 56 -
Laura, 31 -
Helmut, 71 -
Sophie, 24 -
Thomas, 52 -
Fatima, 32 -
Hannah, 34 -
Werner, 53 -
Aisha, 31 - +55 more
How it works 
How to test your proposal — in three steps.
01 Your object
Upload your proposal
Upload your proposal, quote, or sales document as a PDF or text — no setup, no installation. You don't have to stay at your desk during the roughly 20 minutes.
02 Choose Personas
Select your target audience
From over 60 fully developed synthetic personas, you choose the ones that match your target audience — filtered by region, age, and Life-World.
03 Result
A Review with reasons
In about 20 minutes: a Score for each Persona, reasoned statements in plain language, and an AI summary — as a citable PDF.
Persona Chat
First the Review. Then the conversation about your proposal.
Every Persona stays available after the test — in character, with memory of its Review. Ask why a Score came out the way it did and what would make your proposal more convincing. Example conversation, translated from German.
Markus Huber
Managing director · SME · synthetic persona
Why only 5.5 out of 10?
The scope of services is laid out cleanly — I see that right away. But the price has no breakdown; I don't know exactly what I'm paying for. And without a reference company like mine, I don't sign something like this blind.
What would win you over?
Show me the numbers openly, line by line, and a company in my industry that already has this running. If a fellow business owner confirms the math works, I'll check it through myself.
What did you like about the proposal?
The scope of services is clearly described, no buzzword bingo — I take that seriously. Bring the same clarity to the price, and we're in business.
Suggested questions
Type a message…
§ V Testimonials
What customers say
What users say in practice.
Independent professionals and 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.
Daniel Friesenecker
Podcast Strategist & Coach · TheAngryTeddy
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.
Mario Hilger
Social Media Manager
I had my positioning reflected back to me by very different personalities. I would never have seen those blind spots on my own.
Petra Baumgarthuber
Leadership Coach & Consultant
Finally, feedback that comes with reasons — not just “like it” or “don’t like it.” Very valuable for growing my business.
Alfred Baumgarthuber
Owner · Licht-Konzept
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.
Georg Gumpinger
Managing Director · Gut&Co Test & Consulting
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.
Thomas Moshammer
Mentor Coach for Executives
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.
Johann Reisenberger
COO · Snowsports Academy
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.
Andreas Weidinger
Career Coach & Trainer
Where the method hits its limits
Synthetic personas represent average perspectives — not edge cases, and not real conversion data. For final validation, there is no way around real users. Synthetic personas complement real user research — they don't replace it.
§ VI Questions
Common questions about the Proposal Check.
What is a synthetic persona?
A synthetic persona is an AI-modeled profile of a proposal recipient, built with psychological depth. It responds to a proposal the way a specific type of decision-maker would — and delivers a Review with reasoned, quotable feedback. At Radical Personas, every Persona is built from eight psychological layers (including biography, Big Five personality, cognitive biases, and culture) — not a one-line prompt. It complements real client feedback; it doesn't replace it.
How accurate are synthetic personas?
In a benchmark study, AI personas reached ≈85% replication accuracy, benchmarked against the test-retest reliability of human self-responses (Stanford HAI, Park et al., 2024 — preprint, n=1,052). Industry adoption is real, too: 73% of market researchers already use synthetic responses (Qualtrics 2025). Every Review at Radical Personas comes with reasons you can trace, and the science behind the method is documented with sources.
Does a Proposal Check replace real client feedback?
No. Synthetic personas deliver fast, reasoned recipient feedback and complement real client feedback — they don't replace it for the final decision. They capture average perspectives more reliably than extreme positions.
How much does it cost to test a proposal?
The free plan costs nothing (2 Reviews per month, no credit card). Paid plans start from €29/month (€19 introductory price until July 31, 2026) — that works out to under €3 per Review, far less than a proposal that fails on open questions and costs you the deal.
How long does a Proposal Check take?
About 20 minutes from upload to finished PDF report — and you don't have to sit and watch while it runs. Instead of waiting for client feedback or a rejection, you see the open questions beforehand.
Does the Proposal Check include a buying committee perspective?
Optionally. For the object types Website, Product, and Proposal, Radical Personas adds four additional B2B decision criteria from the perspective of a co-decision-maker on the buying committee: cost-effectiveness relative to total cost of ownership (TCO), integration into existing workflows, vendor reliability in ongoing operation, and whether the decision can be defended internally to a committee or supervisor.
Which personas review my proposal?
From over 60 fully developed personas, you choose the ones that match your recipients — from procurement to executive management. Each has its own background, occupation, and decision style, and reads your proposal, quote, or sales document from that perspective. The library's focus is the German-speaking (DACH) market — useful if that's where your clients are.
Can I use Radical Personas as an agency or for client projects?
Yes. You test any proposal you're authorized to test and pass the PDF report on to your clients. From the Pro plan up you get White-label PDFs (your logo instead of ours), team accounts, and multiple Brand Profiles (up to 5 or 10 depending on plan) — built for agencies and client work. For larger volumes, talk to us.
§ VII Plans
Pricing
Start for free. Grow when you need more.
Free plan to try it out, no credit card. Five plans from Free to Enterprise — cancel anytime.
Essential
€29/ month
All of Free, plus:
- 10 Reviews per month
- 4 Personas per Review
- Unlimited chat
- PDF report (full)
- DPA available
Pro
€149/ month
All of Essential, plus:
- 50 Reviews per month
- 6 Personas per Review
- 3 team accounts
- 5 Brand Profiles
- White-label PDF
- Journeys up to 5 pages
- Quick Wins & Trade-offs
- Priority support
Business
€749/ month
All of Pro, plus:
- 250 Reviews per month
- 12 Personas per Review
- 6 team accounts
- 10 Brand Profiles
- Dedicated contact
- Journeys up to 10 pages
Enterprise
Price on request
All of Business, plus:
- Unlimited Reviews
- Unlimited Personas
- Unlimited team accounts
- Uptime SLA
- Journeys up to 20 pages
- Compliance (GDPR, FADP)
- On-premises
- SSO / SAML
Fair-use policy applies.
All prices excl. VAT (net) · Reverse charge with a valid EU VAT ID · Invoicing in EUR
More Solutions
All Solutions → Want to test something else?
Same method, different material — pick your Personas and get reasoned feedback from your target audience.
§ VIII Getting started
See your proposal through your recipient's eyes.
Free plan, no credit card. Your first report in about 20 minutes.
No credit card required · Cancel anytime · Hosted in the EU