Crescendo vs PolyAI
Which Agents AI tool is better in 2026?
Crescendo
AI-native contact center blending agents and humans
PolyAI
The world's most lifelike voice AI agents for enterprise customer service.
Side-by-side
PolyAI is the more established option (raised $120M), but Crescendo is cheaper to start.
| Metric | Crescendo | PolyAI |
|---|---|---|
| Taglinei | AI-native contact center blending agents and humans | The world's most lifelike voice AI agents for enterprise customer service. |
| Foundedi | 2024 | 2017🏆 |
| HQi | San Francisco, US | London, GB |
| Employeesi | 1001-5000 | 201-500🏆 |
| Neuron scorei | 73🏆 | 58 |
| Total fundingi | $50M | $120M🏆 |
| Latest roundi | Series C · Oct 2024 | Series C · May 2024 |
| Valuationi | $500M🏆 | — |
| Cheapest paid plani | —🏆 | — |
| Free plani | ✗ | ✗ |
| Free triali | ✗ | ✓ |
| Top tier pricei | Enterprise · Contact sales | Enterprise · Contact sales |
| Pricing summaryi | 1 published plans | 1 published plans |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for Crescendo and PolyAI.
| Capability | Crescendo | PolyAI |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✓ | ✗ |
| Webhooks | ✓ | ✗ |
| OAuth 2.0 | ✓ | ✗ |
| SDK languages | 2 (python, typescript) | 2 (JavaScript, Python) |
| Free plan | ✗ | ✗ |
| Free trial | ✗ | ✓ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Crescendo
- Higher Neuron score (73 vs 58)
- Newer company (2024)
🔵 Strengths of PolyAI
- Has raised more capital ($120M vs $50M)
- Offers a free trial
- More mature (2017)
Which should you choose?
Choose Crescendo if price matters most — it starts at Usage, which is friendlier for teams watching burn. Both AI Agents 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
Crescendo vs PolyAI — which is better?
It depends on your priority. Crescendo is the leaner option; PolyAI has broader feature depth. See the side-by-side table above.
Is Crescendo cheaper than PolyAI?
Yes — Crescendo's cheapest paid plan is Usage, while PolyAI's is Enterprise · Contact sales.
Do Crescendo and PolyAI offer free plans?
Crescendo: Paid only. PolyAI: Free trial only.
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