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Best AI agents for call centers (2026)
19 vendors that sell autonomous AI agents that handle customer calls, ranked on published data only. Nobody pays for position and we have not tested these products; latency and concurrency figures are the vendors' own claims. Checked Oct 26, 2026.
| # | Vendor | Starts at | Per-min | Build | Telephony | LLM choice | Latency (claimed) | Concurrency | HIPAA |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Floatbot Voice agent platform · site | $99/mo | — | No-code / low-code | Bring your own | Yes | — | Maximum concurrent calls set per plan | Claims HIPAA |
| 2 | Vonage AI Studio Voice agent platform · site | Free | — | No-code / low-code | Included | — | — | — | Not stated |
| 3 | Ada Voice Enterprise voice AI · site | Quote | — | — | Bring your own | — | — | — | Claims HIPAA |
| 4 | Numa Enterprise voice AI · site | Quote | — | — | — | — | — | — | Not stated |
| 5 | Synthflow Voice agent platform · site | Quote | — | No-code / low-code | Included | — | Sub-100 ms telephony latency | Custom concurrency planning (enterprise) | Not stated |
| 6 | Capacity AI Agents Enterprise voice AI · site | Quote | — | — | — | — | — | — | Not stated |
| 7 | Callab AI Enterprise voice AI · site | Quote | — | — | Bring your own | — | — | — | Claims HIPAA |
| 8 | Google CX Agent Studio Enterprise voice AI · site | Not published | — | No-code / low-code | — | — | — | — | Not stated |
| 9 | Leaping AI Enterprise voice AI · site | Quote | — | — | Included | — | — | — | Not stated |
| 10 | Decagon Enterprise voice AI · site | Quote | — | — | — | — | — | — | Not stated |
| 11 | Kore.ai Enterprise voice AI · site | Quote | — | No-code and API | — | — | Sub-second responses | — | Claims HIPAA |
| 12 | NiCE Cognigy Enterprise voice AI · site | Quote | — | No-code / low-code | — | Yes | — | — | Not stated |
| 13 | PolyAI Enterprise voice AI · site | Quote | — | Developer / API | Bring your own | — | <300ms (vendor figure; ~280–600ms cascade) | 10,000 concurrent | Not stated |
| 14 | Regal Enterprise voice AI · site | Quote | — | — | Included | — | — | Listed as a pricing factor | Claims HIPAA |
| 15 | Sierra Enterprise voice AI · site | Quote | — | — | — | — | Low-latency voice (no figure published) | — | Not stated |
| 16 | Skit.ai Enterprise voice AI · site | Quote | — | — | — | — | — | — | BAA available |
| 17 | Yellow.ai Enterprise voice AI · site | Quote | — | — | — | — | — | — | Not stated |
| 18 | Parloa Enterprise voice AI · site | Not published | — | No-code / low-code | — | — | — | — | Not stated |
| 19 | Replicant Enterprise voice AI · site | Quote | — | No-code / low-code | Included | — | — | — | Not stated |
The AI Receptionist Price Watch
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Questions
Which AI agents for call centers publish a per-minute price?
None of the 19 publish a per-minute price on the pages we read.
Which ones only quote on request?
15 of 19: Ada Voice, Numa, Synthflow, Capacity AI Agents, Callab AI, Leaping AI, Decagon, Kore.ai, NiCE Cognigy, PolyAI and 5 more.
Which have a free plan, trial or credits?
4 of 19: Floatbot, Vonage AI Studio, Google CX Agent Studio, Yellow.ai.
Which are no-code and which are developer platforms?
No-code or low-code builders: Floatbot, Vonage AI Studio, Synthflow, Google CX Agent Studio, Kore.ai, NiCE Cognigy, Parloa, Replicant. API/SDK-first: Kore.ai, PolyAI. 10 don't make it clear on the pages we read.
Do they include phone numbers and telephony?
Vonage AI Studio, Synthflow, Leaping AI, Regal, Replicant provide numbers or telephony themselves. Floatbot, Ada Voice, Synthflow, Callab AI, PolyAI let you bring your own carrier or SIP trunk.
Can I choose the LLM?
Floatbot, NiCE Cognigy say you can choose or bring your own model.
What latency do they claim?
Vendor claims, not our measurements: Synthflow: Sub-100 ms telephony latency; Kore.ai: Sub-second responses; PolyAI: <300ms (vendor figure; ~280–600ms cascade); Sierra: Low-latency voice (no figure published).
Which sign a HIPAA BAA?
Skit.ai say they sign a BAA.
Which integrate with existing contact centers?
Vonage AI Studio (Salesforce, ServiceNow, Microsoft Dynamics); Ada Voice (Genesys, NICE CXone, Twilio Flex, Amazon Connect); Synthflow (Cisco, Avaya, Genesys, RingCentral); Capacity AI Agents (Salesforce, ServiceNow); NiCE Cognigy (NICE CXone, Genesys, Avaya, Amazon Connect); Yellow.ai (Zendesk, Freshdesk, HubSpot, Genesys).
How did you choose these 19?
Every vendor we verified that sell autonomous AI agents that handle customer calls, from its own site. Order uses published data only: published price first, then how many facts the vendor publishes. Nobody pays for placement, and we have not tested these products. Checked Oct 26, 2026.