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CATI puts an interviewer on a call. Yazi runs structured and AI-moderated research in WhatsApp, async, with higher reach, faster turnaround and lower cost.
CATI (computer-assisted telephone interviewing) puts a trained interviewer on a call. Yazi runs structured and AI-moderated research in WhatsApp, asynchronously, at a fraction of the cost and time.
Book a 15-min demo →The honest version: CATI is a proven, interviewer-administered method, strong for structured questionnaires and reaching people who prefer a phone call. A live interviewer can probe and clarify in the moment.
But CATI is slow and costly: every interview needs a scheduled call and a person on the line, and answer rates to unknown numbers keep falling. Yazi lets people respond on their own time in WhatsApp, with AI follow-ups that probe like an interviewer, across thousands of conversations at once.
| CATI | Yazi | |
|---|---|---|
| Primary channel | Outbound phone calls | ✓WhatsApp: no app, no login |
| Strongest markets | Phone-reachable samples | ✓25+ countries; deepest where WhatsApp dominates |
| Methods | Interviewer-led structured interviews | ✓Surveys, diary studies & AI interviews |
| Moderation | Human interviewers only | ✓AI follow-ups on every answer; auto-transcribed & themed |
| Participant friction | Answer an unknown call at a fixed time | ✓Reply in a thread they already use |
| Speed to insight | Limited by call capacity | ✓24h from launch to insight |
| Languages | Depends on interviewer languages | ✓100+ languages, voice + text |
| Cost per complete | High (interviewer time) | ✓Low, self-serve at scale |
If your sample is best reached by phone and needs a live interviewer on every call, CATI still earns its place. If reach, speed and cost matter more, Yazi is built for it.
“With Yazi we went from three weeks in field to a 24-hour cycle, and got a very good sense quickly of what works and what needs more investigation.”
A 15-minute demo, your use case, real numbers.
Book a Demo →