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| Synthflow Synthflow AI | Bland AI Bland | Agora Conversational AI Engine Agora | |
|---|---|---|---|
| Category | Platforms | Platforms | Platforms |
| Status | GA | GA | GA |
| Est. per minute | $0.13 - 0.24 | $0.11 - 0.16 | $0.101 - 0.12 |
| How that was worked out | Third-party estimates only (CloudTalk, Layer3 Labs: ~$0.08-$0.09 base plus LLM/telephony, effective $0.13-$0.24/min). Not verified on synthflow.ai; treat as indicative. | $0.11-$0.14 bundled AI rate plus pass-through carrier minutes (roughly $0.004-$0.014). Short or failed outbound attempts cost $0.015 each regardless. | $0.10 agent task + $0.00099 RTC per user, using included managed models. High end allows for SIP/PSTN carrier minutes, which were not priced in the sources found. |
| Pricing model | subscription | per-minute | per-minute |
| Free tier | None published. | Start plan: free, no card, 2 credits + an inbound number. | First 300 minutes free. |
| Connects by | PSTN, SIP | PSTN, SIP, WebRTC | WebRTC, SIP, PSTN |
| Audio in | Phone (Synthflow native telephony, SIP trunking) | Phone (Bland numbers or BYO Twilio/SIP), web widget | Agora RTC (SD-RTN) audio; SIP/PSTN |
| Audio out | Same | Same | Same |
| Languages | Not verified. | Not verified. | Depends on chosen ASR/TTS vendors. |
| Latency (vendor claim) | No verified number. | No verified number. | No verified vendor number. |
| Key limits |
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| High-severity warnings |
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| Compliance | HIPAA badge on site; MSA/DPA support per pricing page; details not verified. | Not verified in this research (ask Bland for SOC 2/HIPAA terms). | Not verified in this research. |
| Self-hostable | No | No | No |
| Last checked | 2026-10-10 | 2026-10-10 | 2026-10-10 |
| Key numbers and features | |||
| Platform $/min | - | $0.14 | $0.10 |
| All-in price | - | Yes | Yes |
| Entry plan $/mo | $2,500 | $299 | $0 |
| Free tier | No | Yes | Yes |
| Free credit $ | - | - | - |
| Phone numbers | Yes | Yes | Yes |
| Own LLM | - | - | Yes |
| Own keys | - | - | Yes |
| No-code | Yes | Yes | Yes |
| Recording | - | Yes | - |
| Noise cancel | - | - | - |
| Smart turns | - | - | - |
| Latency ms | - | - | - |
| Languages | - | - | - |
| Max session min | - | - | - |
| Concurrency | - | 50 | - |
| WebRTC | - | Yes | Yes |
| WebSocket | - | - | - |
| Phone / SIP | Yes | Yes | Yes |
| HIPAA | - | - | - |
| SOC 2 | - | - | - |
| EU data | - | - | - |
| Self-host | No | No | No |
| Open weights | No | No | No |
| High warnings | 1 | 1 | 1 |