# Voice AI Agents

Ranked by the Vioscale composite score: a confidence-weighted blend of independent signals, not user reviews.

| # | Software | Score | Confidence | Vendor |
|--:|---|--:|---|---|
| 1 | [Smith.ai](https://www.vioscale.ai/software/smith-ai) | 86.1 | 37% (low) | - |
| 2 | [Retell AI](https://www.vioscale.ai/software/retell-ai) | 78 | 54% (medium) | - |
| 3 | [Vapi](https://www.vioscale.ai/software/vapi) | 75.9 | 75% (high) | - |
| 4 | [Dasha.ai](https://www.vioscale.ai/software/dasha-ai) | 72.2 | 55% (medium) | - |
| 5 | [Synthflow AI](https://www.vioscale.ai/software/synthflow-ai) | 67.8 | 76% (high) | - |
| 6 | [Thoughtly](https://www.vioscale.ai/software/thoughtly) | 64.4 | 75% (high) | - |
| 7 | [Sierra](https://www.vioscale.ai/software/sierra) | 62.3 | 41% (low) | - |
| 8 | [Bland AI](https://www.vioscale.ai/software/bland-ai) | 59.4 | 56% (medium) | - |
| 9 | [Goodcall](https://www.vioscale.ai/software/goodcall) | 51.6 | 53% (medium) | - |
| 10 | [PolyAI](https://www.vioscale.ai/software/polyai) | 47.1 | 60% (medium) | - |

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*Source: Vioscale (https://www.vioscale.ai/categories/voice-ai-agents).*