Tadeus vs Outset (2026)
Tadeus and Outset both run AI-moderated interviews, and both support voice. The difference is scope and audience. Outset is an enterprise research platform covering text, voice, video, and voice-to-voice studies with support from its own research team. Tadeus is a focused voice-only platform built for employees, workforce populations, and platforms that embed interviews via API.
Quick answer: Choose Outset for enterprise UX and market research where you want one platform for quant and qual and hands-on support with study design. Choose Tadeus for employee and workforce research, or when you need voice-only interviews with no facial or emotion analysis and an API to embed them in your own product.
At a glance
| Tadeus | Outset | |
|---|---|---|
| Primary focus | Workforce and embedded interviews | Enterprise UX and market research |
| Modality | Voice only | Text, voice, video, voice-to-voice |
| Languages | 70+ | 40+ |
| Facial analysis | None by design | Visual Intelligence reads click paths and facial reactions |
| Study types | Interviews | Combined quant and qual in one study |
| Support model | Self-serve platform and API | Project setup and analysis support from Outset’s research team |
| Audio retention | No audio retained, works from transcripts | Captures recordings |
| Embedding | REST API and webhooks | Web platform |
What Outset does best
Outset is an end-to-end enterprise platform. It supports text, voice, video, and voice-to-voice interviews in over 40 languages, runs up to ten smart follow-ups per question, and combines quantitative and qualitative methods in a single study. Its Visual Intelligence feature reads click paths and facial reactions during usability studies, which gives UX teams signal that a transcript alone cannot. Teams that want help rather than pure self-serve get project setup and analysis support from Outset’s own researchers.
If you are an enterprise team running mixed-method studies and value expert support, Outset is a strong choice.
What Tadeus does best
Tadeus does one thing and keeps it clean: voice interviews with nothing inferred beyond the words. There is no video, no facial analysis, and no emotion inference from tone. 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 works from transcripts and retains no audio.
Against Outset, that focus matters in two places:
- Employees. The EU AI Act prohibits inferring emotion in the workplace from February 2025. Features that read facial reactions are valuable in consumer usability studies but a compliance risk when participants are employees. Tadeus was built without any of that analysis so workforce deployments stay clear of the line.
- Embedding. Tadeus ships a REST API with webhooks so HCM platforms and workforce software can run interviews inside their own product rather than sending people to a separate research platform.
How to decide
- Enterprise UX or market research with mixed quant and qual: Outset.
- You want a research team helping with setup and analysis: Outset.
- Usability studies where click paths and reactions matter: Outset, if your participants are consumers.
- Employee or workforce research: Tadeus. No facial or emotion analysis keeps you inside the EU AI Act line.
- You want interviews inside your own product: Tadeus, via the API and webhooks.
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 Outset better for employee research?
Tadeus. It is voice only, retains no audio, and does not infer emotion or read faces, which is the main EU AI Act concern when interviewing employees. Outset’s strengths, including Visual Intelligence, are aimed at consumer and enterprise UX research.
Both tools support voice. What is the difference?
Outset offers voice as one mode among several, alongside video and facial-reaction analysis. Tadeus is voice only by design: no video exists in the product, no emotion is inferred, and no audio is retained, which simplifies compliance review for workplace use.
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. Outset is used through its own platform.
Last updated July 2026. Tadeus publishes this comparison. The Outset summary is based on its public product pages and is kept factual so the page is useful whichever tool you choose.