# Retell AI vs Synthflow AI

**Leader by Vioscale score:** Retell AI

| Attribute | Retell AI | Synthflow AI |
|---|---|---|
| **Vioscale score** | 78 (54% (medium)) | 67.8 (76% (high)) |
| deployment.options | `{"cloud":true}` | `{"cloud":true}` |
| description.long | An AI voice platform that handles phone calls autonomously, managing appointment booking, order status checks, lead qualification, and customer service interactions. It integrates with existing CRM systems and telephony infrastructure to maintain customer context and automatically log outcomes. | A cloud-based platform that deploys AI agents to handle incoming and outgoing phone calls, customer support interactions, and lead qualification. It operates on dedicated telephony infrastructure, integrates with existing enterprise systems, and offers multilingual support, custom voice options, and compliance certifications for regulated industries. |
| features.capabilities | `{"soc2_type_ii":true,"pricing_model":"per_minute_usage_based","deployment_model":"no_code_saas_platform","post_call_transcription_and_crm_sync":true,"dynamic_mid_call_api_function_execution":true,"emotion_prosody_and_custom_voice_cloning":true,"outbound_dialing_and_campaign_management":true,"live_human_handoff_and_call_transfer_logic":true,"inbound_reception_and_ivr_routing_replacement":true,"voicemail_detection_and_answering_machine_drops":true,"hipaa_compliance_for_medical_appointment_setting":true,"twilio_vonage_bring_your_own_carrier_byoc_support":true,"sub_second_latency_and_interruption_barget_in_handling":false}` | `{"iso_27001":false,"pricing_model":"flat_monthly","deployment_model":"no_code_saas_platform","specialized_industry_verticals":"agnostic","hipaa_compliance_for_medical_booking":true,"post_call_transcription_and_crm_sync":true,"emotion_prosody_and_custom_voice_cloning":true,"outbound_dialing_and_campaign_management":true,"live_human_handoff_and_call_transfer_logic":true,"sms_text_message_follow_up_on_voice_intent":true,"live_human_receptionist_transfer_and_routing":true,"inbound_reception_and_ivr_routing_replacement":true,"after_hours_missed_call_and_overflow_answering":true,"voicemail_detection_and_answering_machine_drops":true,"hipaa_compliance_for_medical_appointment_setting":true,"twilio_vonage_bring_your_own_carrier_byoc_support":true,"native_appointment_calendar_booking_and_modification":true,"sub_second_latency_and_interruption_barget_in_handling":true}` |
| integrations.count | 35 | 200 |
| integrations.list | `[{"name":"Twilio"},{"name":"Vonage"},{"name":"Telnyx"},{"name":"Salesforce"},{"name":"HubSpot"},{"name":"Zoho CRM"},{"name":"Zapier"},{"name":"n8n"},{"name":"Make"},{"name":"viaSocket"},{"name":"Zendesk"},{"name":"Talkdesk"},{"name":"RingCentral"},{"name":"ServiceTitan"},{"name":"Nice"},{"name":"Workable"},{"name":"Go High Level"},{"name":"OpenDental"},{"name":"Slack"},{"name":"Monday.com"},{"name":"Smartsheets"},{"name":"Shopify"},{"name":"Stripe"},{"name":"Xero"},{"name":"Supabase"},{"name":"Webflow"},{"name":"WhatsApp"},{"name":"ElevenLabs"},{"name":"Minimax"},{"name":"Fish Audio"},{"name":"Cartesia"},{"name":"OpenAI"},{"name":"Google Gemini"},{"name":"Anthropic Claude"}]` | `[{"name":"Zapier"},{"name":"Make"},{"name":"GoHighLevel"},{"name":"8x8"},{"name":"HubSpot"},{"name":"RingCentral"},{"name":"Salesforce"},{"name":"Freshworks"},{"name":"Cal.com"},{"name":"Google Calendar"},{"name":"Microsoft Calendar"},{"name":"Five9"},{"name":"Genesys"},{"name":"OpenPhone"},{"name":"Dialpad"},{"name":"3CX"},{"name":"JustCall"},{"name":"Cloudtalk"},{"name":"Cisco"},{"name":"Avaya"},{"name":"Intermedia"},{"name":"Zoho"},{"name":"ActiveCampaign"},{"name":"Monday.com"},{"name":"Pipedrive"},{"name":"Jobber"},{"name":"Follow Up Boss"},{"name":"Housecall Pro"},{"name":"Dentrix"},{"name":"Velocify"},{"name":"Practice Better"},{"name":"Bravity"},{"name":"ServiceTitan"},{"name":"Bitrix24"},{"name":"AthenaOne"},{"name":"Clay"},{"name":"Apollo.io"},{"name":"Gong"},{"name":"Outreach"},{"name":"Twilio"},{"name":"Telnyx"},{"name":"Vonage"},{"name":"Asterisk"},{"name":"GoTo"},{"name":"Plivo"},{"name":"Ooma"},{"name":"Bubble"},{"name":"N8N"},{"name":"Claude AI"},{"name":"OpenAI"}]` |
| market.availability | `{"hqCountry":"US","primaryMarkets":["US","EU","GB"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"primaryMarkets":["US","GB","EU"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"cli":true,"ios":true,"web":true,"android":true}` | `{"web":true}` |
| pricing | `{"type":"usage","plans":[{"free":false,"name":"Pay-as-you-go","summary":"$0.07–$0.31/minute for AI voice agents; $0.002+/message for chat agents. $10 free credit on signup.","features":["Voice agents for inbound/outbound calls","Call transfer and routing","CRM integration (Salesforce, HubSpot)","Post-call transcription and logging","Custom LLM models","SMS capabilities","Knowledge base","Voicemail handling","Call screening detection"],"commitment":"monthly","components":[{"per":{"qty":1,"unit":"minute"},"kind":"metered","amount":0.07,"currency":"USD"},{"per":{"qty":1,"unit":"minute"},"kind":"metered","amount":0.31,"currency":"USD"},{"per":{"qty":1,"unit":"message"},"kind":"metered","amount":0.002,"currency":"USD"},{"kind":"per_unit","unit":"concurrent_call","amount":8,"period":"month","currency":"USD"},{"kind":"per_unit","unit":"knowledge_base","amount":8,"period":"month","currency":"USD"},{"kind":"per_unit","unit":"phone_number","amount":10,"period":"month","currency":"USD"},{"kind":"fixed","amount":2,"period":"month","currency":"USD"},{"per":{"qty":1,"unit":"outbound_call"},"kind":"metered","amount":0.1,"currency":"USD"},{"per":{"qty":1,"unit":"SMS"},"kind":"metered","amount":0.01,"currency":"USD"}],"contactSales":false,"includedLimits":{"free_credit":"$10","knowledge_bases":"10","concurrent_calls":"20"}},{"free":false,"name":"Enterprise","summary":"Custom pricing. HIPAA, SOC2 Type II, and GDPR compliant.","features":["HIPAA/BAA compliance","Single Sign-On (SSO)","Custom MSA agreement","Custom Data Processing Agreement (DPA)","Dedicated concurrency allocation","All Pay-as-you-go features"],"minSeats":50,"components":[{"per":{"qty":1,"unit":"minute"},"kind":"metered","amount":0.055,"currency":"USD"}],"description":"Custom deployment with dedicated support, compliance, and higher concurrency","contactSales":true,"includedLimits":{"concurrent_calls":"50+"}}],"addOns":[{"name":"SMS from Retell","components":[{"kind":"fixed","amount":2,"period":"month","currency":"USD"}]},{"name":"Additional Concurrency","components":[{"kind":"per_unit","unit":"concurrent_call","amount":8,"period":"month","currency":"USD"}]},{"name":"Knowledge Base","components":[{"kind":"per_unit","unit":"knowledge_base","amount":8,"period":"month","currency":"USD"}]},{"name":"Phone Number","components":[{"kind":"per_unit","unit":"phone_number","amount":10,"period":"month","currency":"USD"}]}],"summary":"From $0.07–$0.31/minute for AI voice agents. $10 free credit. Enterprise plans available with HIPAA and SOC2 Type II compliance.","currency":"USD","freeTier":true,"sourceUrl":"https://www.retellai.com/ar/pricing","retrievedAt":"2026-08-25T21:41:54.868Z","startingPrice":{"amount":2,"period":"month","currency":"USD"},"billingPeriods":["month"]}` | `{"type":"subscription","plans":[{"free":false,"name":"Starter","summary":"$29/month","commitment":"monthly","components":[{"kind":"fixed","amount":29,"period":"month","currency":"USD"}],"contactSales":false},{"free":false,"name":"Pro","summary":"$450/month","commitment":"monthly","components":[{"kind":"fixed","amount":450,"period":"month","currency":"USD"}],"contactSales":false},{"free":false,"name":"Growth","summary":"$900/month","commitment":"monthly","components":[{"kind":"fixed","amount":900,"period":"month","currency":"USD"}],"contactSales":false},{"free":false,"name":"Agency","summary":"$1,400/month","commitment":"monthly","components":[{"kind":"fixed","amount":1400,"period":"month","currency":"USD"}],"contactSales":false}],"summary":"From $29/month with 14-day free trial. Pay-as-you-go minutes available.","currency":"USD","freeTier":false,"sourceUrl":"https://synthflow.ai/blog/air-ai-pricing","retrievedAt":"2026-08-25T21:39:50.434Z","freeTrialDays":14,"startingPrice":{"amount":29,"period":"month","currency":"USD"},"billingPeriods":["month"]}` |
| pricing.free_tier | yes | no |
| pricing.model | freemium | commercial |
| pricing.price_level | low | mid |
| pricing.starting_price | `{"amount":2,"currency":"USD"}` | `{"amount":29,"currency":"USD"}` |
| pricing.transparent | yes | yes |
| reliability.sla_pct | - | 99.99 |
| security.gdpr | yes | yes |
| security.hipaa | yes | yes |
| security.pci | - | yes |
| security.soc2 | yes | yes |

## Capabilities (Voice AI Agents)

| Capability | Retell AI | Synthflow AI |
|---|:--:|:--:|
| **Capabilities** |  |  |
| Deployment model | No code saas platform | No code saas platform |
| Sub second latency and interruption barget in handling | ✗ | ✓ |
| Dynamic mid call API function execution | ✓ | - |
| Live human handoff and call transfer logic | ✓ | ✓ |
| Emotion prosody and custom voice cloning | ✓ | ✓ |
| Inbound reception and ivr routing replacement | ✓ | ✓ |
| Outbound dialing and campaign management | ✓ | ✓ |
| Post call transcription and CRM sync | ✓ | ✓ |
| Voicemail detection and answering machine drops | ✓ | ✓ |
| Twilio vonage bring your own carrier byoc support | ✓ | ✓ |
| SOC2 type ii | ✓ | - |
| HIPAA compliance for medical appointment setting | ✓ | ✓ |
| Pricing model | Per minute usage based | Flat monthly |

*Source: Vioscale. Generated 2026-09-01T14:46:24.586Z. "-" = undocumented, not absent.*