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Synthflow alternatives
Synthflow is a voice agent platform, with no published monthly price. Its site states: appointment booking, CRM integration. These 15 vendors are in the same product group and share the most published facts with it.
Synthflow does not publish a monthly price. 3 of the alternatives publish a paid monthly plan, the lowest being OpenMic at $29/month.
Price comparison
| # | Vendor | Starts at | Per-min | Included | Free trial | HIPAA | Why it's here |
|---|---|---|---|---|---|---|---|
| — | Synthflow (the one you're replacing) | Quote | — | — | Not stated | Not stated | |
| 1 | Famulor Voice agent platform · site | Free | — | — | No credit card | BAA available | 2 shared features |
| 2 | ElevenLabs Agents Voice agent platform · site | Not published | — | — | Not stated | BAA available | 2 shared features |
| 3 | Floatbot Voice agent platform · site | $99/mo | — | 500 min | 14-day free trial, no credit card | Claims HIPAA | 1 shared feature |
| 4 | OpenMic Voice agent platform · site | $29/mo | — | — | Free trial | Not stated | 1 shared feature, 1 shared integration |
| 5 | Vonage AI Studio Voice agent platform · site | Free | — | — | Free plan | Not stated | 1 shared feature |
| 6 | Retell AI Voice agent platform · site | Free | $0.07 | — | $10 free credits | BAA available | 1 shared feature, 1 shared integration |
| 7 | Ada Voice Enterprise voice AI · site | Quote | — | — | Not stated | Claims HIPAA | 1 shared feature |
| 8 | Leaping AI Enterprise voice AI · site | Quote | — | — | Not stated | Not stated | 2 shared features |
| 9 | Regal Enterprise voice AI · site | Quote | — | — | Not stated | Claims HIPAA | 2 shared features |
| 10 | Aircall AI Voice Agent Phone-system add-on · site | $100/mo | — | — | Not stated | Not stated | 2 shared features, 1 shared integration |
| 11 | Bland AI Voice agent platform · site | Free | $0.14 | — | Free plan | BAA available | 1 shared feature, 1 shared integration |
| 12 | Callin.io Voice agent platform · site | Free | $0.16 | — | Free trial | Not stated | 1 shared feature, 1 shared integration |
| 13 | Dasha Voice agent platform · site | Free | $0.08 | — | Free plan | Not stated | 1 shared feature |
| 14 | LiveKit Agents Voice agent platform · site | Free | $0.01 | — | Free plan | BAA available | 1 shared feature |
| 15 | Vapi Voice agent platform · site | Free | $0.05 | — | $5 free credits | BAA available | 1 shared integration |
Each alternative in one line
- Famulor: AI voice agent platform with per-minute pricing in euros, 120 languages and a BAA option. Famulor alternatives
- ElevenLabs Agents: Voice and chat agent platform from ElevenLabs with 90+ languages and telephony integrations. ElevenLabs Agents alternatives
- Floatbot: No-code voicebot and chatbot builder for inbound and outbound calls, priced by voice minutes or chat sessions. Floatbot alternatives
- OpenMic: No-code voice agent builder with monthly plans; Business includes 1,000 minutes. OpenMic alternatives
- Vonage AI Studio: Low-code builder for voice and chat virtual agents on Vonage APIs, with free, advanced and fully managed plans. Vonage AI Studio alternatives
- Retell AI: Pay-as-you-go voice agent platform for developers; component pricing for infra, voices, LLM and telephony. Retell AI alternatives
- Ada Voice: AI voice agents for customer service that resolve calls, place outbound calls and hand off into existing contact centers. Ada Voice alternatives
- Leaping AI: Voice AI for call centers with self-improving agents and human handoff. Leaping AI alternatives
- Regal: AI voice agents for enterprise contact centers, strong on outbound sales and service with phone-number management. Regal alternatives
- Aircall AI Voice Agent: AI voice agents that answer and resolve calls with or without the Aircall phone system, acting in connected apps. Aircall AI Voice Agent alternatives
- Bland AI: Developer voice AI platform with per-minute talk-time pricing, Conversational Pathways and self-hosting options. Bland AI alternatives
- Callin.io: White-label AI voice platform for agencies at a flat per-minute rate with no monthly fee. Callin.io alternatives
- Dasha: Developer voice-AI platform billed per second with 1,000 free minutes, any LLM and bring-your-own carrier. Dasha alternatives
- LiveKit Agents: Open-source agent framework plus LiveKit Cloud for deploying voice agents, with per-minute agent sessions and built-in telephony. LiveKit Agents alternatives
- Vapi: Developer platform for voice agents: $0.05/min hosting plus pass-through transcriber, model, voice and telephony. Vapi alternatives
Head-to-head comparisons
Synthflow vs VapiBland AI vs SynthflowRetell AI vs SynthflowSynthflow vs VoiceflowElevenLabs Agents vs SynthflowElevenLabs Agents vs VapiElevenLabs Agents vs Retell AIBland AI vs ElevenLabs AgentsCartesia Managed Agents vs ElevenLabs AgentsRetell AI vs VapiBland AI vs Retell AIRetell AI vs UltravoxRetell AI vs VoiceflowPolyAI vs Retell AIRetell AI vs Thoughtly
How we pick alternatives: same product group (voice platforms), at least one shared industry when Synthflow names any, then ranked by shared industries, stated features and integrations. Only facts from vendor sites; unknown values are left blank. Methodology.