# Retell AI vs Synthflow AI

**Leader by vioscaleAI score:** Retell AI

| Attribute | Retell AI | Synthflow AI |
|---|---|---|
| **vioscaleAI score** | 79.3 (72% (medium)) | 67.3 (74% (medium)) |
| content.faq | `[{"answer":"A system for designing and deploying intelligent voice agents that handle inbound and outbound calls, integrate with CRMs and business systems, and route interactions to human agents when needed. Agents can be built via visual canvas or API and operate across existing phone infrastructure. It is indexed under Voice AI Agents.","source":"https://www.retellai.com","question":"What is Retell AI?","confidence":0.6},{"answer":"Retell AI does not publish its prices. Pricing is quoted on request, across 2 plans (Pay-as-you-go and Enterprise), so the figure depends on your seat count and requirements. We record this as a pricing-transparency signal rather than guessing a number. Pricing changes often, so verify at source before relying on it.","source":"https://www.retellai.com/ar/pricing","question":"How much does Retell AI cost?","confidence":0.6},{"answer":"Retell AI supports the web, iOS and Android. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://www.retellai.com","question":"What platforms does Retell AI support?","confidence":0.6},{"answer":"We have only confirmed a cloud / SaaS deployment for Retell AI, so it appears to be vendor-hosted. If a self-hosted option exists we have not found it documented publicly.","source":"https://www.retellai.com","question":"Can Retell AI be self-hosted?","confidence":0.6},{"answer":"We have confirmed 45 integrations for Retell AI, including Twilio, Vonage, Telnyx, Salesforce, HubSpot, Zoho CRM, Zapier and n8n, plus 37 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://www.retellai.com","question":"What does Retell AI integrate with?","confidence":0.6},{"answer":"We have independently confirmed SOC 2, ISO 27001, HIPAA and GDPR for Retell AI. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Retell AI not holding them. Always confirm compliance directly before you rely on it.","source":"https://www.retellai.com","question":"What security certifications does Retell AI have?","confidence":0.6},{"answer":"Retell AI is available worldwide. Its primary markets are the United States, the EU and the United Kingdom. The vendor is headquartered in the United States.","source":"https://www.retellai.com/ar/pricing","question":"Where is Retell AI available?","confidence":0.75}]` | `[{"answer":"A no-code SaaS platform that deploys AI voice agents to automate inbound and outbound phone calls. Offers industry-specific templates for real estate, healthcare, recruitment, automotive, and solar sectors, with customizable voice personas and appointment booking capabilities. It is indexed under Voice AI Agents.","source":"https://synthflow.ai/blog/air-ai-pricing","question":"What is Synthflow AI?","confidence":0.6},{"answer":"Synthflow AI is a paid product; published pricing starts at $29 per month. It is sold across 4 plans (Starter, Pro, Growth and Agency). There is no free tier. Prices are published openly on the vendor's own pricing page. Pricing changes often, so verify at source before relying on it.","source":"https://synthflow.ai/blog/air-ai-pricing","question":"How much does Synthflow AI cost?","confidence":0.6},{"answer":"We have confirmed browser-based access to Synthflow AI. That is the extent of what we could verify from public sources, so it may well offer desktop or mobile clients we have not indexed.","source":"https://synthflow.ai/blog/air-ai-pricing","question":"What platforms does Synthflow AI support?","confidence":0.6},{"answer":"We have only confirmed a cloud / SaaS deployment for Synthflow AI, so it appears to be vendor-hosted. If a self-hosted option exists we have not found it documented publicly.","source":"https://synthflow.ai/blog/air-ai-pricing","question":"Can Synthflow AI be self-hosted?","confidence":0.6},{"answer":"We have confirmed 50 integrations for Synthflow AI, including Zapier, Make, GoHighLevel, 8x8, HubSpot, RingCentral, Salesforce and Freshworks, plus 42 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://synthflow.ai/blog/air-ai-pricing","question":"What does Synthflow AI integrate with?","confidence":0.6},{"answer":"We have independently confirmed SOC 2, HIPAA and GDPR for Synthflow AI. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Synthflow AI not holding them. Always confirm compliance directly before you rely on it.","source":"https://synthflow.ai/blog/enterprise-voice-ai-compliance-checklist","question":"What security certifications does Synthflow AI have?","confidence":0.7},{"answer":"Synthflow AI is available worldwide. Its primary markets are the United States, the United Kingdom and the EU.","source":"https://synthflow.ai/blog/air-ai-pricing","question":"Where is Synthflow AI available?","confidence":0.5}]` |
| deployment.options | `{"cloud":true}` | `{"cloud":true}` |
| description.long | A cloud-based platform that deploys conversational AI agents to handle inbound and outbound phone calls, including lead qualification, appointment booking, call routing, and CRM integration. | A no-code platform for building and deploying AI voice agents that handle customer calls, scheduling, and support at enterprise scale. Includes compliance certifications and integrations with existing business systems. |
| 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":true}` | `{"iso_27001":false,"soc2_type_ii":true,"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,"multi_lingual_auto_detection_and_answering":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 | 1,000 | 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":"Pipedrive","native":true,"category":"crm","direction":"bidirectional"},{"name":"GoHighLevel","native":true,"category":"crm","direction":"bidirectional"},{"name":"Keap","native":true,"category":"crm","direction":"bidirectional"},{"name":"Calendly","native":true,"category":"calendar","direction":"bidirectional"},{"name":"Cal.com","native":true,"category":"calendar","direction":"bidirectional"},{"name":"Google Drive","native":true,"category":"file_storage"},{"name":"Docusign","native":true,"category":"esignature"},{"name":"Jotform","native":true,"category":"forms"},{"name":"Clickup","native":true,"category":"project_management"},{"name":"Azure","native":true,"category":"cloud"},{"name":"Quickbooks","native":true,"category":"accounting"},{"name":"Custom LLM","native":true,"category":"ai"},{"name":"Avaya","native":true,"category":"telephony","direction":"bidirectional"},{"name":"Genesys","native":true,"category":"telephony","direction":"bidirectional"}]` | `[{"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"},{"name":"Google Sheets","native":true,"category":"productivity","direction":"bidirectional"}]` |
| market.availability | `{"primaryMarkets":["US"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"primaryMarkets":["US","GB","EU"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"web":true}` | `{"web":true}` |
| pricing | `{"type":"usage","plans":[{"free":false,"name":"Pay-as-you-go","summary":"$0.07–$0.31/min for voice agents; $0.002+/msg for chat agents","features":["20 concurrent calls included","Full platform access","Drag-and-drop agent builder","Call transfers and routing","CRM integration","Voicemail handling"],"components":[{"per":{"qty":1,"unit":"minute"},"kind":"metered","amount":0.055,"currency":"USD"},{"per":{"qty":1,"unit":"message"},"kind":"metered","amount":0.002,"currency":"USD"}],"description":"Usage-based pricing starting with $10 in free credits","contactSales":false,"includedLimits":{"concurrent_calls":"20"}},{"free":false,"name":"Enterprise","summary":"Custom pricing with volume discounts and dedicated support","features":["Unlimited concurrent calls","HIPAA/BAA compliance","SSO","Custom MSA","Custom DPA","24/7 support","Implementation support","Dedicated account manager"],"description":"Custom pricing for large-scale deployments with dedicated support","contactSales":true}],"summary":"From $0.07/min usage-based pricing. Free tier with $10 credits.","currency":"USD","freeTier":true,"sourceUrl":"https://www.retellai.com/es/pricing","retrievedAt":"2026-10-12T21:50:23.081Z","startingPrice":{"unit":"message","amount":0.002,"currency":"USD"},"billingPeriods":["month"]}` | `{"type":"subscription","plans":[{"free":false,"name":"Starter","summary":"$29/mo","commitment":"monthly","components":[{"kind":"fixed","amount":29,"period":"month","currency":"USD"}],"contactSales":false},{"free":false,"name":"Pro","summary":"$450/mo","commitment":"monthly","components":[{"kind":"fixed","amount":450,"period":"month","currency":"USD"}],"contactSales":false},{"free":false,"name":"Growth","summary":"$900/mo","commitment":"monthly","components":[{"kind":"fixed","amount":900,"period":"month","currency":"USD"}],"contactSales":false},{"free":false,"name":"Agency","summary":"$1400/mo","commitment":"monthly","components":[{"kind":"fixed","amount":1400,"period":"month","currency":"USD"}],"contactSales":false},{"free":false,"name":"Custom","summary":"Custom pricing available","description":"For usage above 6,000 minutes per month","contactSales":true,"includedLimits":{"minutes":"6000+/month"}}],"summary":"From $29/mo. 14-day free trial.","currency":"USD","freeTier":false,"sourceUrl":"https://synthflow.ai/blog/air-ai-pricing","retrievedAt":"2026-10-12T21:49:49.233Z","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":0.002,"currency":"USD"}` | `{"amount":29,"currency":"USD"}` |
| pricing.transparent | yes | yes |
| reliability.sla_pct | 99.9 | 99.99 |
| security.certifications | `[{"name":"SOC 2 Type II","level":"Type II","status":"active"},{"name":"ISO 27001","status":"active"},{"name":"HIPAA","status":"active"}]` | `[{"name":"SOC 2","status":"active"},{"name":"HIPAA","status":"active"},{"name":"PCI DSS","status":"active"},{"name":"GDPR","status":"active"}]` |
| security.gdpr | yes | yes |
| security.hipaa | yes | yes |
| security.iso27001 | yes | - |
| security.pci | - | yes |
| security.soc2 | yes | yes |
| security.trust_center | - | https://synthflow.ai/blog/enterprise-voice-ai-compliance-checklist |

## 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: vioscaleAI. Generated 2026-10-16T20:15:23.218Z. "-" = undocumented, not absent.*