Are both "synthetic users"?

Both use AI to stand in for people. Synthetic Users simulates interviews; Behavr's test user uses your product.

Does Behavr replace interviews?

No. Behavr tells you how someone gets on with your design. It isn't built for open-ended discovery research.

What does Behavr cost?

Your first 5 sessions are free. Basic is US$29 a month for 15 sessions; Pro is US$79 for 60.

Behavr vs Synthetic Users

Verdict

Synthetic Users is for AI interviews: you write a script, choose an audience, and read what simulated people say. Behavr is for your designs: a test user built from your research uses your Figma prototype or live site, thinks aloud, and answers follow-up questions about what they saw. If you're exploring a problem, look at interviews. If you have something to click, use Behavr.

Try it free

At a glance

	Behavr	Synthetic Users
What it does	BehavrA test user uses your prototype or site	Synthetic UsersAI-simulated interviews
What you bring	BehavrA link, plus research to build the test user	Synthetic UsersAn audience, an interview script, optional grounding data
Clicks through your design	BehavrYes, step by step, with think-aloud	Synthetic UsersReacts to stimulus such as images, video and live sites
What you get	BehavrA walkthrough of what they did and said, a report, and follow-up questions	Synthetic UsersInterview transcripts and analysis
Who it's for	BehavrDesigners and product teams iterating on a flow	Synthetic UsersResearch and strategy teams exploring a problem
Pricing	BehavrFree (5 sessions), US$29/month (15), US$79/month (60)	Synthetic UsersFrom US$12,500 a year, annual only, via demo

Choose Synthetic Users if

You're exploring needs and motivations before there's a design.
You want many interviews across audiences at once.
Your budget is annual and research-team sized.

Choose Behavr if

You have a prototype or a live site and want to see someone use it.
You want to start free, or pay monthly.
You want one test user you keep coming back to, built from your own research.

FAQ

Are both "synthetic users"?: Both use AI to stand in for people. Synthetic Users simulates interviews; Behavr's test user uses your product.
Does Behavr replace interviews?: No. Behavr tells you how someone gets on with your design. It isn't built for open-ended discovery research.
What does Behavr cost?: Your first 5 sessions are free. Basic is US$29 a month for 15 sessions; Pro is US$79 for 60.

Sources (checked 16 Oct 2026): Synthetic Users, pricing, FAQs.

Based on public information, last reviewed 19 Oct 2026. Behavr is not affiliated with Synthetic Users. All trademarks belong to their owners.