# AI Phone Agents: the tools companies use

213 companies on usedby use at least one of the 11 tools in this category with a public customer. Regal leads with 40 companies. Counts are of companies on usedby, not of the whole market. Latest check 2026-10-08: 208 of 216 public lines checked.

> Agents capable of making and receiving phone calls

Family: [Meeting & Voice](https://www.usedby.ai/tools/category/meeting-voice.md)

## Ranking

Public customers count every public line, job-post signals included; ties share a rank.

| Rank | Tool | Public customers | Confirmed | Observed | Signals |
|---|---|---|---|---|---|
| 1 | [Regal](https://www.usedby.ai/tools/regal.md) | 40 | 26 | 14 | 0 |
| 2 | [Retell AI](https://www.usedby.ai/tools/retell-ai.md) | 32 | 14 | 18 | 0 |
| 3 | [Hippocratic AI](https://www.usedby.ai/tools/hippocratic-ai.md) | 28 | 9 | 19 | 0 |
| 4 | [Assort Health](https://www.usedby.ai/tools/assort-health.md) | 24 | 12 | 12 | 0 |
| 5 | [Bland AI](https://www.usedby.ai/tools/bland-ai.md) | 21 | 12 | 9 | 0 |
| 6 | [PolyAI](https://www.usedby.ai/tools/polyai.md) | 18 | 14 | 4 | 0 |
| 7 | [Replicant](https://www.usedby.ai/tools/replicant.md) | 15 | 12 | 3 | 0 |
| 8 | [Synthflow](https://www.usedby.ai/tools/synthflow.md) | 14 | 7 | 7 | 0 |
| 9 | [Arini](https://www.usedby.ai/tools/arini.md) | 11 | 7 | 4 | 0 |
| 10 | [Vapi](https://www.usedby.ai/tools/vapi.md) | 10 | 6 | 4 | 0 |
| 11 | [Goodcall](https://www.usedby.ai/tools/goodcall.md) | 3 | 0 | 3 | 0 |

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Source: https://www.usedby.ai/tools/category/ai-phone-agents · How we check: https://www.usedby.ai/methodology