Infinitus Systems vs PolyAI
Which Voice & Speech AI tool is better in 2026?
Infinitus Systems
Automates the high-volume, repetitive phone calls that run the back office of US healthcare
PolyAI
The world's most lifelike voice AI agents for enterprise customer service.
Side-by-side
PolyAI is the more established option (raised $120M); pricing is comparable on both sides.
| Metric | Infinitus Systems | PolyAI |
|---|---|---|
| Taglinei | Automates the high-volume, repetitive phone calls that run the back office of US healthcare | The world's most lifelike voice AI agents for enterprise customer service. |
| Foundedi | 2019 | 2017🏆 |
| HQi | — | London, GB |
| Employeesi | 11-50 | 201-500🏆 |
| Neuron scorei | 47 | 58🏆 |
| Total fundingi | $51.5M | $120M🏆 |
| Latest roundi | Series C | Series C · May 2024 |
| Valuationi | — | — |
| Cheapest paid plani | Pricing not disclosed | — |
| Free plani | ✓ | ✗ |
| Free triali | ✓ | ✓ |
| Top tier pricei | Pricing not disclosed | Enterprise · Contact sales |
| Pricing summaryi | Free | 1 published plans |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for Infinitus Systems and PolyAI.
| Capability | Infinitus Systems | PolyAI |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✗ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | 2 (JavaScript, Python) |
| Free plan | ✓ | ✗ |
| Free trial | ✓ | ✓ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Infinitus Systems
- Offers a free plan
- Newer company (2019)
🔵 Strengths of PolyAI
- Has raised more capital ($120M vs $51.5M)
- Higher Neuron score (58 vs 47)
- More mature (2017)
Which should you choose?
Choose PolyAI if price matters most — it starts at Enterprise · Contact sales, which is friendlier for teams watching burn. Both AI Voice & Speech tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose PolyAI if you want the most established option — it has raised $120M, 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
Infinitus Systems vs PolyAI — which is better?
It depends on your priority. Infinitus Systems is the leaner option; PolyAI has broader feature depth. See the side-by-side table above.
Is Infinitus Systems cheaper than PolyAI?
No — PolyAI's cheapest paid plan is Enterprise · Contact sales, while Infinitus Systems's is Free.
Do Infinitus Systems and PolyAI offer free plans?
Infinitus Systems: Yes, has a free plan. PolyAI: Free trial only.
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