"To know your enemy, you must become your enemy."
Sun Tzu
We built Deja Vu to do what no human team can: run thousands of experiments, with thousands of personas, all at once.
We built Deja Vu to do what no human team can: run thousands of experiments, with thousands of personas, all at once.
We built Deja Vu to do what no human team can: run thousands of experiments, with thousands of personas, all at once.
Each agent explores your product, tests your funnels, breaks your assumptions, and surfaces hidden levers of growth.
Each agent explores your product, tests your funnels, breaks your assumptions, and surfaces hidden levers of growth.
Each agent explores your product, tests your funnels, breaks your assumptions, and surfaces hidden levers of growth.
It doesn’t sleep. It doesn’t guess. It learns.
It doesn’t sleep. It doesn’t guess. It learns.
It doesn’t sleep. It doesn’t guess. It learns.
Persona Generation
Thousands of synthetic identities are built from data, behavior models, and psychographic signals. Each agent acts like a distinct segment — a student, an enterprise buyer, a casual browser, a power user.
![](data:image/svg+xml,<svg display="block" role="presentation" viewBox="0 0 634 124" xmlns="http://www.w3.org/2000/svg"><path d="M 0 120 L 0 88 C 0 72.536 12.536 60 28 60 L 602 60 C 617.464 60 630 47.464 630 32 L 630 0" fill="transparent" height="120px" id="ho7IzWbwr" stroke-dasharray="" stroke-linecap="butt" stroke-linejoin="miter" stroke-miterlimit="10" stroke-width="4" stroke="rgb(239, 241, 245)" transform="translate(2 2)" width="630px"/><path d="M 0 120 L 0 88 C 0 72.536 12.536 60 28 60 L 602 60 C 617.464 60 630 47.464 630 32 L 630 0" fill="transparent" height="120px" id="mSsC8IylF" stroke-dasharray="" stroke-linecap="butt" stroke-linejoin="miter" stroke-miterlimit="10" stroke-width="4" stroke="rgb(255, 176, 54)" transform="translate(2 2) rotate(-180 315 60)" width="630px"/></svg>)
Exploration Simulation
Agents are unleashed inside your product — web app, signup flow, checkout, or CRM pipeline — to test every scenario.
![](data:image/svg+xml,<svg display="block" role="presentation" viewBox="0 0 634 124" xmlns="http://www.w3.org/2000/svg"><path d="M 630 120 L 630 88 C 630 72.536 617.464 60 602 60 L 28 60 C 12.536 60 0 47.464 0 32 L 0 0" fill="transparent" height="120px" id="jF0p3EgYL" stroke-dasharray="" stroke-linecap="butt" stroke-linejoin="miter" stroke-miterlimit="10" stroke-width="4" stroke="rgb(239, 241, 245)" transform="translate(2 2) rotate(180 315 60)" width="630px"/><path d="M 630 120 L 630 88 C 630 72.536 617.464 60 602 60 L 28 60 C 12.536 60 0 47.464 0 32 L 0 0" fill="transparent" height="120px" id="prX3s0PGV" stroke-dasharray="" stroke-linecap="butt" stroke-linejoin="miter" stroke-miterlimit="10" stroke-width="4" stroke="rgb(255, 176, 54)" transform="translate(2 2) rotate(180 315 60)" width="630px"/></svg>)
Event Intelligence
Every interaction generates telemetry: drop-offs, delight points, friction zones, conversion triggers. Deja Vu maps the emotional and functional terrain of your user journey.
Opportunity Extraction
The system identifies untapped markets, broken loops, and conversion biases — then recommends or auto-executes improvements through Hellyeah’s Mutation and Forge integrations.
Persona Generation
Thousands of synthetic identities are built from data, behavior models, and psychographic signals. Each agent acts like a distinct segment — a student, an enterprise buyer, a casual browser, a power user.
Exploration Simulation
Agents are unleashed inside your product — web app, signup flow, checkout, or CRM pipeline — to test every scenario.
Event Intelligence
Every interaction generates telemetry: drop-offs, delight points, friction zones, conversion triggers. Deja Vu maps the emotional and functional terrain of your user journey.
Opportunity Extraction
The system identifies untapped markets, broken loops, and conversion biases — then recommends or auto-executes improvements through Hellyeah’s Mutation and Forge integrations.
Rissa Cao
CEO and Co-Founder
"In the age of AI, understanding behavior is no longer about surveys. It’s about simulations at scale."
Rissa Cao
CEO and Co-Founder
"In the age of AI, understanding behavior is no longer about surveys. It’s about simulations at scale."
Rissa Cao
CEO and Co-Founder
"In the age of AI, understanding behavior is no longer about surveys. It’s about simulations at scale."
Deja Vu is currently available to select partners building AI-first products.
We work closely to design synthetic persona frameworks tailored to your market, data, and business model.
Deja Vu is currently available to select partners building AI-first products.
We work closely to design synthetic persona frameworks tailored to your market, data, and business model.
If you’re ready to let AI see your product the way the world does — step into the loop.
Arenas
Performance
Capabilities
© 2025 Hellyeah Inc. All rights reserved.
EN
UK
CN
JP
KR
Arenas
Performance
Capabilities
© 2025 Hellyeah Inc. All rights reserved.
Arenas
Performance
Capabilities
© 2025 Hellyeah Inc. All rights reserved.
EN
UK
CN
JP
KR