Ellipsis Health vs Sonia
Which Mental Health AI tool is better in 2026?
Ellipsis Health
Uses patented vocal biomarker technology to assess mental and behavioral health from the sound
Sonia
A voice-based AI therapist in your pocket, built by MIT and ETH AI researchers
Side-by-side
Ellipsis Health is the more established option (raised $45M); pricing is comparable on both sides.
| Metric | Ellipsis Health | Sonia |
|---|---|---|
| Taglinei | Uses patented vocal biomarker technology to assess mental and behavioral health from the sound | A voice-based AI therapist in your pocket, built by MIT and ETH AI researchers |
| Foundedi | 2017🏆 | 2023 |
| HQi | — | New York, United States |
| Employeesi | 11-50🏆 | — |
| Neuron scorei | 44 | 65🏆 |
| Total fundingi | $45M🏆 | $3.4M |
| Latest roundi | Series A | Seed |
| Valuationi | — | — |
| Cheapest paid plani | Pricing not disclosed | Pricing not disclosed |
| Free plani | ✓ | ✗ |
| Free triali | ✓ | ✓ |
| Top tier pricei | Pricing not disclosed | Pricing not disclosed |
| Pricing summaryi | Free | Free trial |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for Ellipsis Health and Sonia.
| Capability | Ellipsis Health | Sonia |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✗ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | — |
| Free plan | ✓ | ✗ |
| Free trial | ✓ | ✓ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Ellipsis Health
- Has raised more capital ($45M vs $3.4M)
- Offers a free plan
- More mature (2017)
🔵 Strengths of Sonia
- Higher Neuron score (65 vs 44)
- Newer company (2023)
Which should you choose?
Choose Sonia if price matters most — it starts at Free trial, which is friendlier for teams watching burn. Both AI Mental Health tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Ellipsis Health if you want the most established option — it has raised $45M, suggesting more runway for enterprise features, support, and long-term roadmap. For mission-critical workflows or larger teams, that stability often outweighs a lower monthly price.
Frequently asked questions
Ellipsis Health vs Sonia — which is better?
It depends on your priority. Ellipsis Health has raised more capital and is the more established option; Sonia has broader feature depth. See the side-by-side table above.
Is Ellipsis Health cheaper than Sonia?
No — Sonia's cheapest paid plan is Free trial, while Ellipsis Health's is Free.
Do Ellipsis Health and Sonia offer free plans?
Ellipsis Health: Yes, has a free plan. Sonia: Free trial only.
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