OpenCall.ai vs PolyAI Comparison (2025)
OpenCall.ai
Starting at $0.10/ minute
OpenCall doesn’t just pick up the phone and recite a script. It listens. It understands. And most impressively, it responds like a human would—fluidly, naturally, and with purpose. I’ve heard AI agents handle insurance verification calls, navigate complex scheduling workflows, and even wait patiently on hold before transferring the call back to a medical office at exactly the right moment. This isn’t voice automation; it’s delegation.
What makes OpenCall different is how deeply it integrates into a business’s backend systems. This means it can actually do things: check calendars, update patient records, confirm appointments, and triage urgent service requests—all without a human ever lifting the receiver. It’s not just about saving time (though it does, dramatically); it’s about transforming the customer experience into something responsive, seamless, and available 24/7.
What makes OpenCall different is how deeply it integrates into a business’s backend systems. This means it can actually do things: check calendars, update patient records, confirm appointments, and triage urgent service requests—all without a human ever lifting the receiver. It’s not just about saving time (though it does, dramatically); it’s about transforming the customer experience into something responsive, seamless, and available 24/7.
Key Metrics
Latency
700 ms
Automation
76%
Integrations
2000
Onboarding
2 days
OpenCall.ai
Score
93
Latency
700 ms
Automation
76%
Integrations
2000
Onboarding
2 days
Cost
Low
HIPAA Compliant
Yes
PolyAI
Score
67
Latency
1700 ms
Automation
72%
Integrations
25
Onboarding
60 days
Cost
Medium
HIPAA Compliant
Yes
OpenCall.ai
OpenCall doesn’t just pick up the phone and recite a script. It listens. It understands. And most impressively, it responds like a human would—fluidly, naturally, and with purpose. I’ve heard AI agents handle insurance verification calls, navigate complex scheduling workflows, and even wait patiently on hold before transferring the call back to a medical office at exactly the right moment. This isn’t voice automation; it’s delegation.
What makes OpenCall different is how deeply it integrates into a business’s backend systems. This means it can actually do things: check calendars, update patient records, confirm appointments, and triage urgent service requests—all without a human ever lifting the receiver. It’s not just about saving time (though it does, dramatically); it’s about transforming the customer experience into something responsive, seamless, and available 24/7.
What makes OpenCall different is how deeply it integrates into a business’s backend systems. This means it can actually do things: check calendars, update patient records, confirm appointments, and triage urgent service requests—all without a human ever lifting the receiver. It’s not just about saving time (though it does, dramatically); it’s about transforming the customer experience into something responsive, seamless, and available 24/7.
PolyAI
Poly AI positions itself as a multilingual powerhouse with natural-sounding agents and enterprise use cases. But without public pricing, you’ll need to talk to sales before understanding costs—and anything outside standard English can trigger custom pricing. Integrations work fine if you’re on Salesforce or a mainstream stack, but anything else means custom development. In real use, the assistant occasionally forgets context or asks you to repeat yourself, which breaks the illusion fast. For all the polish, it often feels like a heavy lift to get consistent, high-quality performance.
Full Comparison
| Vendor | Score | Latency | Automation | Integrations | Cost | Action |
|---|---|---|---|---|---|---|
OpenCall.ai $0.10/ minute | 93 | 700 ms | 76% | 2000 | Low | |
 Retell.ai $0.07 – 0.08 /min | 82 | 950 ms | 55% | 25 | Low | |
 Sierra AI $2 per successful outcome | 79 | 800 ms | 60% | 30 | Low | |
PolyAI $0.25 /min (example case study) | 67 | 1700 ms | 72% | 25 | Medium | |
 Bland AI $0.09/min | 66 | 1100 ms | 50% | 15 | Low | |
 Phonely $396 (yearly) | 61 | 1200 ms | 52% | 17 | Medium | |
 Hey Rosie $49/mo (250 min) + $0.25/min | 57 | 950 ms | 60% | 1 | Low | |
 Smith.ai $3.25 /call (Starter 30 calls @ $97.50/mo) | 55 | 2300 ms | 40% | 30 | Medium | |
 8x8 XCaaS $60 per seat per month | 49 | 250 ms | 50% | 15 | Medium | |
 CloudTalk $25 – $50 /user/mo | 47 | 23 ms | 40% | 500 | Low | |
 Synthflow AI $0.08 /min (Growth) | 20 | 2300 ms | 45% | 20 | Low | |
 Balto.ai $100 / seat /mo | 12 | 100 ms | 0% | 40 | High |