Models

Learn about the models that power the thymia API
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thymia offers two voice biomarker models, each designed for a distinct use case. Both analyse neural morphemes™ extracted from natural speech and return clinically validated scores. They differ in their intended setting, output type, regulatory status, and recording requirements.

Model overviews

Comparison

HeliosApollo
Intended settingNon-clinicalClinical
Regulated medical deviceNoYes — UKCA Class I
Intended usersDevelopers, operators, wellness teamsQualified healthcare professionals
Recordings required12
Minimum speech duration10 seconds15 seconds per recording
Maximum recording length3 minutes3 minutes per recording
Supported formatsFLAC, MP3, MP4, Ogg, WebM, WAVFLAC, MP3, MP4, Ogg, WebM, WAV
Languages supported1111
Output typeWellness biomarker scoresDisorder probabilities + symptom scores
Clinical reportNoYes — PDF and web view
Data deletionConfigurableConfigurable

Which model should I use?

Use Helios if you are:

  • Monitoring operator wellbeing or fatigue in safety-critical environments
  • Tracking patient wellness between clinical appointments
  • Embedding continuous mental wellness monitoring into a consumer or enterprise product
  • Running longitudinal wellbeing programmes in pharmaceutical or occupational health contexts

Use Apollo if you are:

  • A healthcare professional conducting remote mental health triage
  • Screening patients for depression or anxiety before a clinical consultation
  • Tracking symptom-level treatment response over time
  • Building a regulated clinical decision support tool

Apollo requires a separate access agreement with thymia and is intended for use by qualified healthcare professionals only. Contact support@thymia.ai to request access.

Using models via Sentinel

Both Helios and Apollo are also available as real-time streaming biomarkers via Sentinel — thymia’s monitoring layer for live voice AI applications. Rather than submitting recordings via the REST API, Sentinel streams audio from your existing voice stack and returns biomarker signals in real time during the conversation.

Integration pathBest for
thymia REST APIAsynchronous recording submission and result retrieval
SentinelReal-time biomarker extraction during live voice conversations

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