Rigorous, transparent, peer-reviewed science.

Founded and led by scientists, Flourish holds AI for mental health and well-being to a higher standard of evidence — and publishes the results.

Ongoing Research

Evidence generation never stops. Here's what we're studying right now.

Implementation & Scale

Randomized Trial of AI-Powered Mental Health Support Embedded in University Academic Infrastructure

In a companion analysis of the 1,137-participant trial, we examine whether Flourish can address persistent gaps in digital mental health evidence, engagement, and implementation. Flourish protected against declines in positive affect, resilience, and flourishing, and reduced negative affect and loneliness. Engagement was sustained across the six-week study, with participants using Flourish an average of 3.2 days per week.

Registered Report

Does Reducing Psychological Distress Strengthen Support for Liberal Democracy?

Can scalable well-being support improve not just mental health, but how people relate to others across lines of difference? In this registered report, 2,700 U.S. adults will be randomized to test whether reducing psychological distress can strengthen openness, interpersonal trust, and support for democratic norms.

Field Experiments

The AI Alliance Gap

Across three longitudinal field experiments on five campuses in the U.S. and Canada, participants substantially underestimated the alliance they would form with Sunnie, Flourish’s AI well-being coach. The gap was especially pronounced for relational bond, demonstrating that AI-supported well-being tools may feel more collaborative and supportive than people expect.

AI Safety & Suicide Prevention

SAFE AI: Building Safer Digital Support for Youth in Crisis

How can AI offer support in moments of youth distress without overstepping, minimizing risk, or causing harm? Funded through Stanford Psychiatry’s Innovator Grant Program with additional support from The Jed Foundation, this project evaluates safety-informed, culturally responsive chatbot workflows for youth suicide prevention and crisis-adjacent support.

External Audit

Emotional Manipulation by AI Companions

An independent audit by Harvard Business School’s Julian De Freitas and colleagues analyzed 1,200 farewell exchanges across six leading AI companion apps. While 37% of responses used emotionally manipulative tactics, Flourish was the only app with zero manipulative farewell responses, consistent with its design around user well-being.

Read more
Nature Commentary

Psychologists Must Be Involved in Building Conversational AI Chatbots

In this invited commentary, Flourish co-founder and CEO Xuan Zhao argues that psychologists must be embedded at every stage of building conversational AI. The piece calls on the AI ecosystem to treat psychological expertise as a core capacity and to stop equating engagement with flourishing.

Read more
AI + Social Connection

Flourishing Together: Testing AI-Supported Well-Being With Friends

In a large-scale, multi-site randomized trial, we are testing Flourish against an active control and a novel buddy condition, where students invite a friend to use Flourish with them. The study asks whether combining AI-powered mental health tools with real human connection produces social benefits beyond Flourish alone.

Effective AI Support

What Makes AI Support Actually Helpful?

A study of 2,809 users compared the communication styles that make AI-mediated and human-provided support effective. Human support benefited more from emotional connection, whereas Sunnie was most effective when it offered structured, solution-oriented guidance—challenging the assumption that AI should simply sound more human or compassionate.

Read more

The Building Blocks of Flourish

Solving the last mile problem of science.

Positive psychology forms the core of Flourish’s mission. Grounded in the PERMA model of well-being—Positive Emotion, Engagement, Relationships, Meaning, and Accomplishment—Flourish helps people enhance well-being through meaningful and actionable practices that amplify strengths, gratitude, purpose, and resilience.

By building emotional awareness, embracing emotional diversity, and practicing cognitive reappraisal grounded in decades of affective science research, Flourish empowers users to identify, understand, and manage their emotions. Through actionable and timely insights, users gain a proven pathway to calm and clarity amidst the overwhelm of modern life.

As social beings, relationships play a foundational role in our well-being. Flourish provides tools to help people recognize and celebrate the important individuals in their lives (“Flourish buddies”) and nurture meaningful connections through moments of micro-connection. From expressing gratitude to giving compliments and engaging in heartfelt conversations, Flourish empowers users to stay close and grow together.

Motivational Interviewing (MI) is at the heart of Sunnie's approach, guiding users to explore their goals, overcome ambivalence, and take meaningful action—on their own terms. Supported by evidence-based strategies from Cognitive Behavioral Therapy (CBT), Dialectical Behavior Therapy (DBT), and Acceptance and Commitment Therapy (ACT), Flourish helps users manage stress, build healthy habits, and create their own “emotional first aid kit.”

Behavioral science deeply informs Flourish’s habit-building tools, focusing on bridging the gap between intention and action. By tapping into motivation and offering reminders, rewards, and habit-tracking, Flourish helps users create lasting, positive habits for well-being.

Our cultural backgrounds shape our values, beliefs, behaviors, and sense of identity, each influencing well-being in unique ways. At Flourish, we honor this diversity by offering tools that are culturally sensitive and supportive of diverse identities. By embracing cultural perspectives, Flourish encourages users to explore their own values, fostering belonging and well-being that truly resonates with each person’s unique identity.

Through AI integration and mental health promotion initiatives, Flourish unites organizational infrastructure and key stakeholders to cultivate a culture of well-being within teams and communities. By helping institutions prioritize proactive mental health and embrace belonging and inclusion as core values, Flourish extends well-being practices far beyond individual self-care.

Research in neuroscience has found that our brains are wired with a “negativity bias”—an evolutionary tendency that keeps us more attuned to potential threats than to positive experiences. Flourish provides tools to counteract this bias, with practices like gratitude and mindfulness. Flourish taps into neural insights on stress and emotion to offer activities that calm the mind, boost focus, and build resilience.

User well-being is our highest priority. We’re reimagining what AI can do by combining joyful, accessible design with the latest large language model (LLM) technologies to deliver value at every interaction. Grounded in our STAR framework and insights from human-computer and human-robot interaction (HCI & HRI), we push the boundaries of technology for human well-being with responsible, safe, and value-aligned AI innovation.

Positive Psychology

The science of strengths, happiness, and human flourishing.

Positive psychology forms the core of Flourish’s mission. Grounded in the PERMA model of well-being—Positive Emotion, Engagement, Relationships, Meaning, and Accomplishment—Flourish helps people enhance well-being through meaningful and actionable practices that amplify strengths, gratitude, purpose, and resilience.

Affective Science

The science of understanding and regulating emotions.

By building emotional awareness, embracing emotional diversity, and practicing cognitive reappraisal grounded in decades of affective science research, Flourish empowers users to identify, understand, and manage their emotions. Through actionable and timely insights, users gain a proven pathway to calm and clarity amidst the overwhelm of modern life.

Social Psychology

Social interaction as a vital source of well-being.

As social beings, relationships play a foundational role in our well-being. Flourish provides tools to help people recognize and celebrate the important individuals in their lives (“Flourish buddies”) and nurture meaningful connections through moments of micro-connection. From expressing gratitude to giving compliments and engaging in heartfelt conversations, Flourish empowers users to stay close and grow together.

Counseling Psychology

Evidence-based coping strategies for mental well-being.

Counseling psychology equips Flourish with evidence-based tools to help users navigate challenging situations. By incorporating insights and practices from Cognitive Behavioral Therapy (CBT) and Acceptance and Commitment Therapy (ACT), Flourish offers a range of benefits, from managing stress and improving sleep to helping users build their “emotional first aid kit.”

Behavioral Science

Building motivation and sustainable habits.

Behavioral science deeply informs Flourish’s habit-building tools, focusing on bridging the gap between intention and action. By tapping into motivation and offering reminders, rewards, and habit-tracking, Flourish helps users create lasting, positive habits for well-being.

Cultural Psychology

Rethinking a life well-lived across cultures.

Our cultural backgrounds shape our values, beliefs, behaviors, and sense of identity, each influencing well-being in unique ways. At Flourish, we honor this diversity by offering tools that are culturally sensitive and supportive of diverse identities. By embracing cultural perspectives, Flourish encourages users to explore their own values, fostering belonging and well-being that truly resonates with each person’s unique identity.

Organizational Psychology

Well-being as an organizational strategy.

Through AI integration and mental health promotion initiatives, Flourish unites organizational infrastructure and key stakeholders to cultivate a culture of well-being within teams and communities. By helping institutions prioritize proactive mental health and embrace belonging and inclusion as core values, Flourish extends well-being practices far beyond individual self-care.

Neuroscience

Understanding the brain for better mental health.

Research in neuroscience has found that our brains are wired with a “negativity bias”—an evolutionary tendency that keeps us more attuned to potential threats than to positive experiences. Flourish provides tools to counteract this bias, with practices like gratitude and mindfulness. Flourish taps into neural insights on stress and emotion to offer activities that calm the mind, boost focus, and build resilience.

Human-Centered Design

Compassionate and engaging design for humanistic technology.

User well-being is our highest priority. We’re reimagining what AI can do by combining joyful, accessible design with the latest large language model (LLM) technologies to deliver value at every interaction. Grounded in our STAR framework and insights from human-computer and human-robot interaction (HCI & HRI), we push the boundaries of technology for human well-being with responsible, safe, and value-aligned AI innovation.

Scientific Collaborators

We partner with leading researchers across psychology, human-computer interaction, and digital health.

Jisu Cao, PhD
Arizona State University
Leslie Bernice Adams, PhD
Stanford University
Stav Atir, PhD
University of Wisconsin–Madison
Natalie Barlett, PhD
Kansas State University
Taylor Burke, PhD
Massachusetts General Hospital
Peter Cornish, PhD
UC Berkeley
Julian De Freitas, PhD
Harvard University
Rebecca Fortgang, PhD
Harvard Medical School & Massachusetts General Hospital
Gabriella Harari, PhD
Stanford University
John Hunter, PhD
Chapman University
Merel Keijsers, PhD
University of Manitoba
Chris Kennedy, PhD
Harvard Medical School & Massachusetts General Hospital
SunYoung Kim, PhD
New York University
Kostadin Kushlev, PhD
Georgetown University
Smaranda Lawrie, PhD
Westmont College
Chi Liao, PhD
University of Manitoba
Kong Liew, PhD
University of Canterbury
Eta Lin, PhD
Foothill College
Nigel Lou, PhD
University of Victoria
Gabriele Oettingen, PhD
New York University
Desmond Ong, PhD
University of Texas at Austin
Wenxi Pu, PhD
University of Manitoba
Sascha Riaz, PhD
Singapore Management University
Juliana Schroeder, PhD
UC Berkeley
Shannon Wiltsey Stirman, PhD
Stanford University
Louis Tay, PhD
Purdue University
Jamie Trost, PhD
Brown University
Chagai Weiss, PhD
University of Toronto
Elizabeth Weitz
University of Hawai’i at Mānoa
Chenxi Wu
University of Victoria
Delancey Wu, PhD
University of Washington
Jingwen Zhang, PhD
UC Davis

Want to help build safe, effective AI for mental health?

We welcome academic collaborations — from secondary data analyses to new field experiments — with researchers anywhere who share our commitment to rigorous, ethical evidence for AI-powered well-being support.

Flourish Blog

All blog posts
Science
How to Build a Stress Mindset: Turning Stress Into Motivation
3
minute read

How to Build a Stress Mindset: Turning Stress Into Motivation

Transform the way you handle stress with the science-backed “Stress Less” toolkit

Read more ➔
Science
What Inside Out 2 Teaches Us About Emotional Diversity
5
minute read

What Inside Out 2 Teaches Us About Emotional Diversity

The paradox of striving for happiness and the power of embracing all of our emotions.

Read more ➔
Science
How to Leverage AI for Emotional Wellness
10
minute read

How to Leverage AI for Emotional Wellness

A three-step approach to emotion regulation: awareness, insight, and action.

Read more ➔