# Synthflow AI alternatives

The highest-scoring alternative to Synthflow AI in Voice AI Agents is **Smith.ai** (86/100), against Synthflow AI's 68/100. Ranked on independent signals, not user reviews. No vendor pays for placement.

| # | Alternative | Score | Confidence | Compare |
|--:|---|--:|---|---|
| 1 | [Smith.ai](https://www.vioscale.ai/software/smith-ai) | 86 | 37% (low) | [Synthflow AI vs Smith.ai](https://www.vioscale.ai/compare/smith-ai-vs-synthflow-ai) |
| 2 | [Retell AI](https://www.vioscale.ai/software/retell-ai) | 78 | 54% (medium) | [Synthflow AI vs Retell AI](https://www.vioscale.ai/compare/retell-ai-vs-synthflow-ai) |
| 3 | [Vapi](https://www.vioscale.ai/software/vapi) | 76 | 75% (high) | [Synthflow AI vs Vapi](https://www.vioscale.ai/compare/synthflow-ai-vs-vapi) |
| 4 | [Dasha.ai](https://www.vioscale.ai/software/dasha-ai) | 72 | 55% (medium) | [Synthflow AI vs Dasha.ai](https://www.vioscale.ai/compare/dasha-ai-vs-synthflow-ai) |
| 5 | [Thoughtly](https://www.vioscale.ai/software/thoughtly) | 64 | 75% (high) | [Synthflow AI vs Thoughtly](https://www.vioscale.ai/compare/synthflow-ai-vs-thoughtly) |
| 6 | [Sierra](https://www.vioscale.ai/software/sierra) | 62 | 41% (low) | [Synthflow AI vs Sierra](https://www.vioscale.ai/compare/sierra-vs-synthflow-ai) |
| 7 | [Bland AI](https://www.vioscale.ai/software/bland-ai) | 59 | 56% (medium) | [Synthflow AI vs Bland AI](https://www.vioscale.ai/compare/bland-ai-vs-synthflow-ai) |
| 8 | [Goodcall](https://www.vioscale.ai/software/goodcall) | 52 | 53% (medium) | [Synthflow AI vs Goodcall](https://www.vioscale.ai/compare/goodcall-vs-synthflow-ai) |
| 9 | [PolyAI](https://www.vioscale.ai/software/polyai) | 47 | 60% (medium) | [Synthflow AI vs PolyAI](https://www.vioscale.ai/compare/polyai-vs-synthflow-ai) |

Synthflow AI itself ranks #5 of 10 in Voice AI Agents.

---
*Source: Vioscale (https://www.vioscale.ai/alternatives/synthflow-ai). Generated 2026-09-01T16:28:20.262Z.*