Tadeus vs Maze (2026)
Tadeus and Maze approach AI-moderated interviews from opposite directions. Maze added AI interviews to an established UX research suite that also covers prototype testing, surveys, card sorting, and tree testing. Tadeus is a specialist: voice-only AI interviews for employees and workforce populations, with an API for embedding them in other platforms.
Quick answer: Choose Maze if you already run usability testing and surveys in Maze and want AI interviews inside the same suite. Choose Tadeus if interviews are the product you need, your participants are employees rather than users, or you want to embed interviews in your own software while staying clear of the EU AI Act emotion-inference line.
At a glance
| Tadeus | Maze | |
|---|---|---|
| Primary focus | Workforce and embedded interviews | UX and product research suite |
| Scope | AI interviews only | Prototype testing, surveys, card sorting, tree testing, AI interviews |
| Modality | Voice only | AI-moderated within the wider suite |
| Languages | 70+ | Any language |
| Quality controls | Structured JSON, transcript-based | 25 quality metrics per conversation, traceable quotes |
| Reporting | Transcript plus structured JSON via API | Auto-generated reports |
| Embedding | REST API and webhooks | Web platform |
What Maze does best
Maze is a full product research suite. Its AI moderator is goal-driven, runs in any language, and evaluates every conversation against 25 quality metrics, with results returned as traceable quotes and auto-generated reports. The interviews sit next to prototype tests, surveys, card sorts, and tree tests, so a product team can run its whole discovery and validation workflow in one tool.
If your team already uses Maze, adding AI-moderated interviews there is the path of least resistance, and the quality metrics give research leads a way to audit conversations at scale.
What Tadeus does best
Tadeus is a specialist where Maze is a suite. An AI agent holds a spoken conversation in over 70 languages, probes and branches on answers, can verify identity or call external systems mid-conversation, and returns a transcript plus structured JSON. It is voice only, with no video and no emotion inference. It works from transcripts and retains no audio.
Against Maze, that focus matters in three places:
- Workforce populations. Maze is aimed at product and UX research with users. Tadeus is built for interviewing employees, where the EU AI Act prohibits emotion inference from February 2025 and where questions, consent, and data handling look different from user research.
- Voice as the native medium. Tadeus interviews run as natural spoken conversations, which works for people who are not at a desk: frontline staff, drivers, field workers.
- Embedding. Tadeus ships a REST API with webhooks so HCM platforms and workforce software can run interviews inside their own product. Maze is a destination platform.
How to decide
- You already use Maze for testing and surveys: Maze. One suite beats two tools.
- Product discovery where interviews sit next to prototype tests: Maze.
- Employee or workforce research: Tadeus. Voice only and no emotion inference keeps you inside the EU AI Act line.
- Interviews inside your own product: Tadeus, via the API and webhooks.
- You only need interviews: Tadeus. You are not paying for a testing suite you will not use.
For the research case on voice-only interviews, see Why voice, not video. For the full market view, see The Best AI-Moderated Interview Tools (2026).
Frequently asked questions
Is Tadeus or Maze better for employee research?
Tadeus. It is voice only, retains no audio, and does not infer emotion, which is the main EU AI Act concern when interviewing employees. Maze is a product and UX research suite aimed at users and customers.
Is Tadeus or Maze better for UX research?
Maze. Its AI interviews sit inside a suite with prototype testing, card sorting, and tree testing, and every conversation is scored against 25 quality metrics. Tadeus does not offer usability testing tools.
Can either tool be embedded in another product?
Tadeus is designed for embedding, with a REST API and webhooks so interviews run inside your own software. Maze is used through its own platform.
Last updated July 2026. Tadeus publishes this comparison. The Maze summary is based on its public product pages and is kept factual so the page is useful whichever tool you choose.