# Sunzu

> Sunzu is AI user research software. Shape products people love. User insights in minutes. Test ideas, designs and ads 500× faster than human research. Cut research costs. Let every team test and learn.

© 2026 Sunzu, Inc. All rights reserved. Services outside the UK, Switzerland and EEA are provided by Sunzu, Inc., a Delaware corporation (file #10756833). UK, Swiss and EEA services are provided by its wholly owned subsidiary, Alpha Base OS Ltd, registered in England and Wales (company #16212608; registered office: 71–75 Shelton Street, Covent Garden, London WC2H 9JQ, United Kingdom; VAT GB488054656; ICO C1103931).

## Product and evidence

- [Research, definitions and benchmark scope](https://sunzu.com/research/): how audiences work, the evidence base, validation and limits. Guide updated 2026-09-29; study benchmarks reviewed 2026-09-08.
- [Product website](https://sunzu.com/): study workflows, customer testimonials and booking.
- [Web app demo](https://sunzu.com/videos/web-app/): explore the browser workspace and its four research workflows.
- [MCP for AI assistants](https://sunzu.com/for/ai-engineers/): supported research workflows, setup guidance and an assistant demo.
- [White papers](https://sunzu.com/papers/): original authored research. Full articles are open by default, with an optional PDF signup.
- [Methodology](https://sunzu.com/papers/2/): data enrichment, behavioural modelling, validation gates, traceability and research limitations.
- [Learn before you build](https://sunzu.com/papers/1/): practical guidance on testing decisions with AI simulations and evaluating business value.

Sunzu is AI user research software for product, design and marketing teams. Its composable AI combines 20+ layers, including algorithms and small models, to simulate human behaviour. Customer evidence grounds the research. Synthetic humans are AI simulations, not recruited participants; an audience models a customer group. See [product definitions](https://sunzu.com/research/#what-is-sunzu) and [method and validation](https://sunzu.com/research/#validation).

The web app supports depth interviews, concept testing, usability testing and ad testing. MCP supports depth interviews, concept tests and UX tests through compatible clients. See [research workflows](https://sunzu.com/research/#workflows) and the [MCP demo in Claude](https://sunzu.com/videos/mcp/). Audience findings complement research with real people; consequential decisions need human validation.

## Headline claims and their scope

Sunzu reports 96% of the insights humans can uncover and testing ideas, designs and ads 500× faster than human research. These are company-reported figures from internal research on proprietary data, concerning insight coverage and research speed respectively. Underlying datasets and detailed evaluation protocols are not published. They are separate from the study comparisons below and are not a guarantee for every study. See the [visible claim definitions and scope](https://sunzu.com/research/#claim-scope).

## Current study benchmarks

Source: [Sunzu internal back-testing](https://sunzu.com/research/#benchmarks), reviewed 2026-09-08. Each human reference is set to 100%. These are study-specific findings, not an aggregate accuracy score or independent certification.

| Study and measure | Sunzu, in minutes | Human expert with AI, in days | Human reference, in months | Reported equivalence |
| --- | --- | --- | --- | --- |
| Depth interviews: themes covered | 76% | 54% | Human insights, retested: 100% | Equivalent to sample size of 10+ humans |
| Concept testing: insights found | 85% | 58% | Research, 500+ humans: 100% | Equivalent to sample size of 30+ humans |
| UX testing: defects detected | 75% | 34% | Research, 500+ humans: 100% | Equivalent to sample size of 20+ humans |
| Ad testing: insights found | 69% | 55% | Research, 500+ humans: 100% | Equivalent to sample size of 20+ humans |

The depth-interview reference is insights retrievable from the same humans when retested within a two-week interval. The time labels describe the compared research workflows; the two-week interval describes the retest. Results do not establish performance for every audience or study.

## Watch pages

- [User insights in minutes: Sunzu overview](https://sunzu.com/videos/overview/): Shape products people love. See how Sunzu uses AI-powered synthetic humans to test ideas, designs and ads in this product overview.
- [Sunzu AI research web app demo](https://sunzu.com/videos/web-app/): See the Sunzu web app for AI user research: choose an audience and explore depth interviews, concept testing, UX testing and ad testing.
- [AI depth interviews demo](https://sunzu.com/videos/depth-interviews/): See how Sunzu runs AI depth interviews with synthetic humans. Choose an audience and review findings, motivations and segment reactions.
- [AI concept testing demo](https://sunzu.com/videos/concept-testing/): Test ideas before you build. Watch Sunzu’s AI concept testing workflow, from choosing an audience to comparing findings and simulated reactions.
- [AI usability testing demo](https://sunzu.com/videos/ux-testing/): Test designs before release. Watch Sunzu’s AI usability testing workflow and explore a report on likely friction in the user experience.
- [AI ad testing demo](https://sunzu.com/videos/ad-testing/): Test ads before media spend. Watch Sunzu’s AI ad testing workflow and explore how synthetic humans react to creative and messages.
- [Sunzu MCP demo in Claude](https://sunzu.com/videos/mcp/): See Sunzu research audiences inside Claude. This MCP demo shows an AI assistant retrieving the available audiences through Sunzu’s connector.

## Who Sunzu is for

- [All audiences](https://sunzu.com/for/): research workflows for enterprise teams and product builders.
- [Insights analysts](https://sunzu.com/for/insights-analysts/): More questions answered. Evidence you can examine.
- [Product managers](https://sunzu.com/for/product-managers/): Before it hits the roadmap, put it to your audience.
- [UX designers](https://sunzu.com/for/ux-designers/): Find the friction. While it is still a design.
- [Marketing strategists](https://sunzu.com/for/marketing-strategists/): Make your positioning mean something to them.
- [Copywriters](https://sunzu.com/for/copywriters/): You know what you mean. Find out what they hear.
- [Go-to-market leads](https://sunzu.com/for/go-to-market-leads/): Before you take it to market, put the story to the test.
- [Growth managers](https://sunzu.com/for/growth-managers/): Give your next experiment a better starting point.
- [Indie SaaS founders](https://sunzu.com/for/indie-saas-founders/): Your next sprint is too valuable to guess.
- [Product and design agencies](https://sunzu.com/for/product-design-agencies/): Turn the client review into a decision.
- [Performance and creative agencies](https://sunzu.com/for/creative-agencies/): Pressure-test the creative. Before the media spend.
- [Startup product teams](https://sunzu.com/for/startup-product-teams/): A small product team. A stronger research habit.
- [Product and UX consultants](https://sunzu.com/for/product-consultants/): Your judgement. With evidence behind it.
- [Ecommerce and DTC brands](https://sunzu.com/for/ecommerce-brands/): Before the next drop, test the story that sells it.
- [Accelerators and venture studios](https://sunzu.com/for/accelerators-venture-studios/): Help every team ask the next better question.
- [AI engineers and app builders](https://sunzu.com/for/ai-engineers/): Your agent builds the UI. Who checks the experience?

MCP supports research through compatible clients. Automated PR comments, CI/CD review APIs and merge gates are proposed workflows to discuss, not integrations offered on the AI engineers page. Study scope and pricing are agreed with Sunzu; these pages do not publish experimental price bands as available plans.

## Contact and company

- [Enterprise](https://sunzu.com/enterprise/): discuss a study with Sunzu; the first study is offered free.
- [Builders](https://sunzu.com/builders/): early access for the upcoming self-service product.
- [Book a call](https://sunzu.com/cal/intro)
- [Company details](https://sunzu.com/legal/company/)
- [Privacy](https://sunzu.com/legal/privacy/)
- Email: hello@sunzu.com