| Price from | $0.08/mo | $2,500/mo |
| Free plan | — | — |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Plans published | 6 | 1 |
| Spec score · AI Voice Agents | 8.3 (#7) | 7.2 (#24) |
| Headquarters | Mexico City, Mexico | Berlin, Germany |
| Integrations | The company lists HubSpot, Zoho CRM, Salesforce, Google Calendar, and an API as integrations. | Synthflow says it connects with more than 200 apps, including HubSpot, Salesforce, RingCentral, Zapier, and Google Calendar. |
| Product | Fonema provides AI voice and text agents that handle calls, WhatsApp, and chat 24/7. | Synthflow describes itself as an enterprise Voice AI platform for automating inbound and outbound phone conversations. |
| Support | Fonema provides Spanish-language accompaniment and lists [email protected] for sales contact. | Enterprise pricing includes SLA and support terms scoped in the contract, along with implementation, onboarding, testing, training, and launch support. |
| Telephony | Fonema telephony runs on Twilio with a $15 USD monthly line fee plus country rates, or customers can connect their own SIP trunk without Fonema telephony charges. | Synthflow says its in-house telephony supports SIP trunking and integration with existing telephony systems. |