AI-Powered Usability Testing

Usability testing with domain-expert personas, in minutes

A developer tool needs feedback from someone who already uses developer tools. Tessary configures AI personas with the role, domain expertise, and context of your actual users, then runs your Figma prototype or live URL in a real browser. You get structured findings the same afternoon, not three weeks later.

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The Problem

Recruiting domain-expert participants is the bottleneck.

Generic panels rarely return participants who understand a developer tool, an analytics platform, or a workflow product. Most B2B teams wait 2 to 5 days for usable sessions, then spend a few more hours watching recordings to pull out the three findings their team already suspected. By then the sprint has moved on.

29%

of research teams operate on under $25K a year, before participant incentives, recruiter fees, or repeat studies (User Interviews 2025 Research Budget Report).

User Interviews 2025 Research Budget Report

2–5 days

typical wait for usable panel sessions, plus the hours spent reviewing recordings.

2-week sprints

do not absorb a 2 to 4 week recruitment cycle. Either the test slips or the design ships untested.

How It Works

Three steps from prototype to findings

The full loop is one configuration step, one paste, and a wait short enough to keep your laptop open.

Configure a persona
Describe the role, domain knowledge, goals, and tool familiarity of the user you want to simulate. The setup flow turns a one-line description into a persona with the behavioral context of a data engineer, a DevOps lead, or a finance analyst.
Set the task
Paste a Figma prototype link or a live URL. Write the task you want the persona to attempt the same way you would brief a real participant. Tessary will suggest sharper task wording if the brief is ambiguous.
Get findings
The persona runs the task in a real browser. You watch the live session if you want, or come back to a structured report: where the persona hesitated, what it missed, the path it took, and the reasoning behind each step.

Side by Side

What the AI is actually doing varies by tool

UserTesting uses AI to draft test plans. Maze uses it to moderate interviews. Tessary uses it to run the session as a domain-expert user, on your prototype or live URL, in a real browser.

	Tessary	UserTesting · Maze
AI runs the test	Yes	No · No
AI helps design the test	Yes	Yes · No
Domain-expert personas	Yes	No · No
Live URL and prototype testing	Yes	Yes · Prototype focus
Findings in minutes	Yes	No (days) · Partial (click data)
No participant recruitment	Yes	No · No

Key Benefits

Built for sprint-cadence usability work

Test with the right expertise

Public participant pools rarely supply developers, operations managers, or finance professionals on short notice. Tessary personas carry domain context, so the feedback reflects how a user with that background would actually navigate the screen.

Results before your next standup

Most sessions return findings in under 15 minutes. The validation step lands inside the sprint that needs it, not after the design has already shipped.

Skip the recruiting step

Configure a persona once and reuse it across every design iteration. Same user, same context, two designs side by side. No scheduling, no incentives, no rescheduling around no-shows.

Reports your stakeholders can read

Findings arrive as structured issues with screenshots, interaction steps, and reasoning traces. You can share the report directly without writing a synthesis doc.

FAQ

Common questions

Tessary grounds each persona in role-specific knowledge before the run. A persona set up as a data analyst navigates with analyst-level familiarity, not as a generic internet user. The accuracy floor is highest for developer tools, analytics, and workflow products, where domain knowledge changes how a user reads a screen.

Yes. Sessions run in a real browser, so the same setup works for Figma prototypes, staging environments, and production URLs. No SDK, no script tag, no instrumentation on your side.

No. Tessary covers the usability-testing step, specifically the part where you need a domain-expert participant on a flow this week. Discovery interviews, lived-experience research, and emotional-context work still need real people. The point is to remove the recruiting bottleneck so testing happens every sprint, not to skip research.

UserTesting runs on a recruited panel, with results in days and pricing that starts in the tens of thousands per year. Maze returns click data and survey responses, which is useful for funnel checks but thin on qualitative reasoning. Tessary sits between them: a domain-expert persona, a real browser run, structured findings in minutes. For a longer breakdown, read our B2B SaaS usability testing guide.

Keep exploring

Get Started

Run your first session this afternoon.

Configure a persona, paste a URL, and get usability findings before the next sprint review. The free tier covers three sessions a month, no credit card.

Start freeFree tier includes three sessions a month. No credit card required.