AI-Powered User Testing

Ship with Certainty

Validate designs in minutes with realistic, domain-aware AI users.

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The Problem

Usability testing is slow, expensive, and easy to skip

Recruiting, scheduling, and synthesizing takes weeks. Most teams ship on assumptions, and feedback arrives after the product has moved on.

Slow turnaround

Weeks to get enough sessions to trust the result.

Low signal

No-shows and rushed participants reduce insight quality.

High cost

Incentives and platform fees block frequent iteration.

Iteration drag

Waiting for results slows every design loop.

Traditional Workflow

Manual Recruitment & Testing

21 DAYS
Average Delay
Draft Study
Slow
+2 Days
Recruit Users
Painful
+7 Days
Schedule
Unreliable
+4 Days
Interview
Exhausting
+5 Days
Synthesize
Stale Data
+3 Days
DATA DECAY
Total Friction

"We just ship and hope for the best."
The Solution

Validate in minutes, not weeks

Create AI personas that think like your target users. Set a task, and watch how they experience your product - where they hesitate, where they get confused, and what makes them give up. Get evidence-backed findings you can act on immediately.

Configurable personas

Define context, goals, expertise, and patience. Personas behave consistently across runs so you can compare iterations.

Action

Real interactions

Each persona works through your product as a real user would - hesitating, backtracking, and forming mental models.

Issue

Actionable outputs

Every issue includes severity, evidence (screenshots, steps, replay), and a recommended fix.

Built for your role

Pick the workflow that fits your team

Tessary runs the same way for every team — paste a URL, configure a persona, get findings. Each landing page below covers the specifics of that workflow.
Features

Everything you need to ship with confidence

Replays

Watch high-fidelity sessions to see exactly what happened.

Evidence capture

Screenshots, annotated steps, and the reasoning behind every interaction.

Prioritized issues

A structured report with severity, impact, and recommended fixes.

Attention signals

Heatmaps and interaction hotspots to spot misaligned hierarchy.

Success metrics

Task success, time on task, and drop-off points across iterations.

Secure runs

Isolated environments designed to protect pre-launch work.
Pricing

Simple, transparent pricing

Free

$0/mo

Perfect for exploring Tessary

No credit card required

  • 3 sessions/month
  • 1 persona per session
  • Session video, UX analysis, persona feedback, reasoning trace
Get started free
Early Access

Team

Let's Talk

For teams ready to scale

  • Unlimited sessions
  • Complex personas with deep domain expertise
  • Long-term persona memories across sessions
  • Custom persona library
Book a Demo
FAQ

Frequently asked questions

Regular LLM feedback is generic and surface-level. Tessary runs fully personalized AI personas that think and behave like your target user, with consistent goals, context, and decision-making across the session. Every click, hesitation, and mistake reflects the persona — so the feedback reads like a real user journey, not an AI critique.
Absolutely. Paste your public prototype link and our AI users will navigate it just like a human would, including handling complex transitions and interactive hotspots.
We see Tessary as a super-filter. Use AI users for 90% of your iterations to catch obvious friction, then run final human tests once the design is polished. It saves thousands in wasted research hours and recruitment costs.
Very. You can define domain expertise, specific skills, product familiarity, mental models, and decision-making styles, then run the same flow across multiple personas to compare how different knowledge profiles respond.

Find friction before your users do.

Start free. See where your users get confused, and why.

Get Started Free

No credit card required