Compare by deployment responsibility.
Category-level profiles only. We describe which layer each supplier occupies and what it leaves you to own; we do not rank them, and nothing here is verified supplier performance. Order is alphabetical.
| Provider | Layer | Routes | Pricing basis | Verification | Shortlist |
|---|---|---|---|---|---|
| Bland AI | Voice-agent platform | Build, Tool | Usage-based; confirm current pricing. | ! Verification needed | |
| Five9 | Contact-centre suite | Tool, Expert | Licence-based; confirm packaging. | ○ Category-level; not tested by Trace Margin | |
| Genesys | Contact-centre suite | Tool, Expert | Licence-based with AI add-ons; confirm current packaging. | ○ Category-level; not tested by Trace Margin | |
| NICE | Contact-centre suite | Tool, Expert | Licence-based; confirm packaging. | ○ Category-level; not tested by Trace Margin | |
| Retell AI | Voice-agent platform | Tool, Build | Usage-based per minute with component options. Confirm current pricing. | ○ Category-level; not tested by Trace Margin | |
| Synthflow | Voice-agent platform | Tool | Verification needed. | ! Verification needed | |
| Talkdesk | Contact-centre suite | Tool, Expert | Licence-based; confirm packaging. | ○ Category-level; not tested by Trace Margin | |
| Twilio | Telephony/network | Build, Tool | Per-minute and per-number telephony pricing; confirm current rates. | ○ Category-level; not tested by Trace Margin | |
| Vapi | Voice-agent platform | Build, Tool | Usage-based per minute, with underlying component costs that may be billed separately. Confirm current pricing. | ○ Category-level; not tested by Trace Margin |
No pay-to-rank
No supplier pays for inclusion, order or wording. Trace Margin has no referral or affiliate arrangements.
Unknown is not zero
Missing documentation is shown as unknown, never scored. Ask the supplier.
Components ≠ services
A speech API, a developer platform and a managed deployment carry different responsibilities.