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Case Studies

Find all Yazi case studies here

Which AI is actually best for market research?

An independent, head-to-head test of five large language models across a full research workflow, from raw survey data to a client-ready report. Here is what we found.
Yoco x Yazi case study thumbnail: 200 Merchants, 3 Devices, 1 Channel: Yoco's Pricing Breakthrough

200 Merchants, 3 Devices, 1 Channel: Yoco's Pricing Breakthrough

How Yoco used targeted WhatsApp surveys to measure price sensitivity for three card machines, with a Van Westendorp study of more than 200 SME merchants.

From Consumer Data to Closed Deals: Stitch's Three-Sector Insight Play

How Stitch used WhatsApp surveys to produce three sector insight reports - turning consumer data into its highest-performing enterprise sales asset.

200 Gen Z Interviews in Under 24 Hours

How TBWA completed 200 Gen Z interviews in under 24 hours - saving 20 hours while capturing richer insights through AI probing and voice notes on WhatsApp.

568 Voices, 100+ Voice Notes: Impact Research on WhatsApp

How the Magaliesberg Biosphere used Yazi's WhatsApp surveys to reach 568+ people and capture rich, community-driven insights for a landscape assessment.
KLA x Yazi case study thumbnail: The Diary Study That Ran Itself: KLA's Wine Consumer Research

The Diary Study That Ran Itself: KLA's Wine Consumer Research

How KLA ran a 7-day pre-group diary study with 84 wine consumers on WhatsApp, with clean data in real time and no manual exports.

How Ipsos Replaced Four Channels with One - and Got Better Data

How Yazi's WhatsApp solution and AI Interviewer replaced Ipsos's fragmented data collection - boosting engagement and capturing richer consumer insights via voice notes.
ikeja x Yazi case study thumbnail: From 6% to 45%: How ikeja Heard Every Customer on WhatsApp

From 6% to 45%: How ikeja Heard Every Customer on WhatsApp

How ikeja used AI-moderated WhatsApp interviews to hear from customers across South African townships, then used what they said to fix its service and write its tagline.
Inicio Insights x Yazi case study thumbnail: Inicio Replaced Their Entire Diary Workflow With a WhatsApp Chat

Inicio Replaced Their Entire Diary Workflow With a WhatsApp Chat

How Inicio Insights ran a three-day consumer ethnography across 31 Nigerian households with AI-moderated WhatsApp interviews, with 97% completion and a client who asked for more.

Three Weeks to Afternoon: Mixed-Method Research, Rebuilt on WhatsApp

How Greenfields Research compressed three weeks of mixed-method fieldwork into 24 hours - using Yazi's WhatsApp AI interviewer to reach young people across the Western Cape for the City of Cape Town.
HYROX South Africa x Yazi case study thumbnail: HYROX Moment: Real-Time Feedback from 7,800 Athletes & Spectators

HYROX Moment: Real-Time Feedback from 7,800 Athletes & Spectators

How HYROX South Africa moved post-race feedback to WhatsApp in Cape Town, reaching athletes within hours of the finish line, and grew it into a programme across three race weekends.
Old Mutual x Yazi case study thumbnail: Quarterly NPS & Employee Research at Scale via WhatsApp

Quarterly NPS & Employee Research at Scale via WhatsApp

How Old Mutual ran its quarterly Advice NPS tracker on WhatsApp for the first time, reaching 1,700 customers in under a week with the score holding steady through the switch.
Thinks Insight & Strategy x Yazi case study thumbnail: 200-Person Resident Panel for Continuous Community Listening

200-Person Resident Panel for Continuous Community Listening

How Thinks Insight & Strategy ran a standing resident panel for a UK local authority on WhatsApp, with 75 to 85% of panellists completing each wave.
The Research Agency (TRA) x Yazi case study thumbnail: Capturing Real-Time Sports Betting Behaviours Through WhatsApp Diaries

Capturing Real-Time Sports Betting Behaviours Through WhatsApp Diaries

How The Research Agency (TRA) used AI-moderated diary studies to uncover in-the-moment betting decisions across Australia and New Zealand.