> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.thymia.ai/overview/llms.txt.
> For full documentation content, see https://docs.thymia.ai/overview/llms-full.txt.

# Models

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

<CardGroup cols={2}>
  <Card href="/helios/overview" src="https://files.buildwithfern.com/https://thymia.docs.buildwithfern.com/a2b9ba388bcbb82f4e3b000082ce7709352d98d276e0be2498b51e654d51d839/docs/assets/cards/helios-graphic.png" imagePosition="top">
    ### Helios

    #### Wellbeing and safety monitoring

    Wellbeing monitoring from live voice. Detects distress, stress,
    fatigue, low self-esteem, and burnout in real time — across
    human and voice agent interactions — for healthcare, pharma,
    and safety-critical industries.
  </Card>

  <Card href="/apollo/overview" src="https://files.buildwithfern.com/https://thymia.docs.buildwithfern.com/d78539743b51c01644a28e5c6e1eadef7cba9bdc38facebf6cc6305fb7a3c510/docs/assets/cards/apollo-graphic.png" imagePosition="top">
    <div>
      ### Apollo <Badge intent="note">Clinical</Badge>
    </div>

    #### Clinical-grade health detection

    Voice-based depression and anxiety assessment covering all DSM-V
    criteria with disorder-level results and granular symptom scores.
    Apollo is a regulated medical device intended for qualified
    healthcare professionals only.
  </Card>
</CardGroup>

## Comparison

|                              | Helios                                | Apollo                                  |
| ---------------------------- | ------------------------------------- | --------------------------------------- |
| **Intended setting**         | Non-clinical                          | Clinical                                |
| **Regulated medical device** | No                                    | Yes — UKCA Class I                      |
| **Intended users**           | Developers, operators, wellness teams | Qualified healthcare professionals      |
| **Recordings required**      | 1                                     | 2                                       |
| **Minimum speech duration**  | 10 seconds                            | 15 seconds per recording                |
| **Maximum recording length** | 3 minutes                             | 3 minutes per recording                 |
| **Supported formats**        | FLAC, MP3, MP4, Ogg, WebM, WAV        | FLAC, MP3, MP4, Ogg, WebM, WAV          |
| **Languages supported**      | 11                                    | 11                                      |
| **Output type**              | Wellness biomarker scores             | Disorder probabilities + symptom scores |
| **Clinical report**          | No                                    | Yes — PDF and web view                  |
| **Data deletion**            | Configurable                          | Configurable                            |

## 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

<Note>
  Apollo requires a separate access agreement with thymia and is
  intended for use by qualified healthcare professionals only.
  Contact [support@thymia.ai](mailto:support@thymia.ai) to request
  access.
</Note>

## Using models via Sentinel

Both Helios and Apollo are also available as real-time streaming
biomarkers via [Sentinel](/sentinel/overview) — 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 path    | Best for                                                       |
| ------------------- | -------------------------------------------------------------- |
| **thymia REST API** | Asynchronous recording submission and result retrieval         |
| **Sentinel**        | Real-time biomarker extraction during live voice conversations |

<div>
  ***
</div>

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