Traceable
Follow findings back to their sources, so you can check the evidence and explain your decisions.
We help builders
Ship smarter
Sunzu simulates human reactions at scale, so user research takes minutes, not weeks.
Trusted by
Backed by
- Microsoft for Startups
- NatWest Accelerator
Product development
From discovery to confident launch
Used by
- Insights analysts
- Product managers
- UX designers
- Marketing strategists
- Copywriters
- Go-to-market leads
- Growth managers
-
Discover
Depth interviews
Clarify the problem, priorities and language that matter before you commit time or budget.
- Equivalent sample size
- 6+
- human users
Themes covered Sunzu in minutes 76%Human expert with AI in days 54%Human insights, retested in months 100% -
Shape
Concept testing
Compare early directions with the people you need to reach, then back the strongest proposition.
- Equivalent sample size
- 30+
- human users
Insights found Sunzu in minutes 85%Human expert with AI in days 58%Research, 500+ humans in months 100% -
Refine
UX testing
Spot friction in the journey before release, while changes are still quick and inexpensive.
- Equivalent to hiring
- 5+
- human UX experts
Defects detected Sunzu in minutes 75%Human expert with AI in days 34%Research, 500+ humans in months 100% -
Launch
Ad testing
Find the message and creative most likely to earn attention before you put spend behind it.
- Equivalent sample size
- 20+
- human users
Insights found Sunzu in minutes 69%Human expert with AI in days 55%Research, 500+ humans in months 100%
Foundations
Trust built on evidence
Benchmarked
Performance measured against real human findings, so you know what to expect.
Focused
95% less noise than standard generative AI solutions.
Grounded in continuously updated data
- 57M+
- Signals
- 4k+
- Evidence sources
- 1M+
- Profiles
- 34M+
- Mapped attributes
From our customers
Relied on by global experts
Director, Consumer Insights & Strategy
In just a couple of months, over 170 of our colleagues have run over 500 studies.
We’re now directly integrating synthetic humans into many of our research, product and marketing workflows.
Director, Global Product and Design UX Research
In a market flooded with AI-generated noise, this was the first platform that genuinely earned our trust.
By grounding its models in research principles, behavioural science, and real customer data, it delivers insights that feel credible, transparent, and actionable.
It changed our perspective on what’s possible with AI in customer research.