Voice Agents
The Voice Agents segment of the agent economy: 20 companies, ranked by X followers.
| Company | Headcount | HC 3m | Traffic/mo | X followers | Last round | Category |
|---|---|---|---|---|---|---|
| ElevenLabs AI voice models and conversational voice agent platform | 1,515 | ▲ 100.4% | 78.8M | 209.6K | $500M Series D | Voice Agents |
| Sesame Conversational voice AI companions | 156 | ▲ 15.0% | 1.2M | 34.6K | $250M Series B | Voice Agents |
| Bland AI Enterprise AI phone agents | — | — | — | 23.8K | — | Voice Agents |
| Hume AI Emotionally intelligent voice AI and voice-agent performance measurement | 56 | ▲ 5.7% | 201.9K | 23.7K | — Series B | Voice Agents |
| Cartesia Real-time voice models for voice agents | 174 | ▲ 14.7% | 8.2M | 17.5K | $64M Series A | Voice Agents |
| Plivo Voice AI Agents for customer engagement, including WhatsApp, SMS &… | 195 | ▼ -4.0% | 205.4K | 12.6K | $1.8M Last known: Seed (2012) | Voice Agents |
| Deepgram Speech-to-text, TTS and voice agent API | 387 | ▲ 12.3% | 1M | 11.6K | $130M Series C | Voice Agents |
| LiveKit Open-source realtime infrastructure and voice agent framework | 196 | ▲ 37.8% | 361.3K | 11.5K | — Series C | Voice Agents |
| Vapi Developer platform for building voice AI agents | 150 | ▲ 21.1% | 1.3M | 9,987 | $50M Series B | Voice Agents |
| PolyAI Enterprise voice assistants for customer service | 358 | ▼ -4.0% | 207.1K | 9,305 | $86M Series D | Voice Agents |
| LemonSlice Give your voice agents a face | 11 | ■ 0.0% | 78.5K | 6,140 | $10.5M Seed | Voice Agents |
| Daily (Pipecat) Realtime video/voice infra; creators of Pipecat | 168 | ▲ 2.5% | 263.4K | 5,578 | $40M Series B | Voice Agents |
| Synthflow No-code voice AI agents for phone calls | 56 | ▼ -16.7% | 67.8K | 5,541 | $20M Series A | Voice Agents |
| Retell AI Supercharge Your Contact Center Operations with AI Phone Agents | 196 | ▲ 22.9% | 1M | 3,561 | $4.6M Seed | Voice Agents |
| Leaping AI AI voice and texting agents | 16 | ▼ -11.8% | 4,070 | 1,079 | $4.7M Seed | Voice Agents |
| Marr Labs AI-voice agents that are indistinguishable from humans. | 10 | ▼ -33.3% | 2,787 | — | — | Voice Agents |
| Prosper AI Phone Agents for Healthcare Operations | 70 | ▲ 50.0% | 18.6K | — | $30M Series A | Voice Agents |
| AviaryAI Outbound AI voice agents for the financial services industry | 16 | ▲ 14.3% | 2,568 | — | $3M Seed | Voice Agents |
| SpadeWorks AI agents that turn every call into revenue for trade businesses | — | — | — | — | — | Voice Agents |
| Altur Voice AI Agents for Debt Collection | 12 | ▲ 20.0% | 652 | — | — Seed | Voice Agents |
AI voice models and conversational voice agent platform
- HC
- 1,515
- 3m
- ▲ 100.4%
- X
- 209.6K
Conversational voice AI companions
- HC
- 156
- 3m
- ▲ 15.0%
- X
- 34.6K
Enterprise AI phone agents
- HC
- —
- 3m
- —
- X
- 23.8K
Emotionally intelligent voice AI and voice-agent performance measurement
- HC
- 56
- 3m
- ▲ 5.7%
- X
- 23.7K
Real-time voice models for voice agents
- HC
- 174
- 3m
- ▲ 14.7%
- X
- 17.5K
Voice AI Agents for customer engagement, including WhatsApp, SMS &…
- HC
- 195
- 3m
- ▼ -4.0%
- X
- 12.6K
Speech-to-text, TTS and voice agent API
- HC
- 387
- 3m
- ▲ 12.3%
- X
- 11.6K
Open-source realtime infrastructure and voice agent framework
- HC
- 196
- 3m
- ▲ 37.8%
- X
- 11.5K
Developer platform for building voice AI agents
- HC
- 150
- 3m
- ▲ 21.1%
- X
- 9,987
Enterprise voice assistants for customer service
- HC
- 358
- 3m
- ▼ -4.0%
- X
- 9,305
Give your voice agents a face
- HC
- 11
- 3m
- ■ 0.0%
- X
- 6,140
Realtime video/voice infra; creators of Pipecat
- HC
- 168
- 3m
- ▲ 2.5%
- X
- 5,578
No-code voice AI agents for phone calls
- HC
- 56
- 3m
- ▼ -16.7%
- X
- 5,541
Supercharge Your Contact Center Operations with AI Phone Agents
- HC
- 196
- 3m
- ▲ 22.9%
- X
- 3,561
AI voice and texting agents
- HC
- 16
- 3m
- ▼ -11.8%
- X
- 1,079
AI-voice agents that are indistinguishable from humans.
- HC
- 10
- 3m
- ▼ -33.3%
- X
- —
AI Phone Agents for Healthcare Operations
- HC
- 70
- 3m
- ▲ 50.0%
- X
- —
Outbound AI voice agents for the financial services industry
- HC
- 16
- 3m
- ▲ 14.3%
- X
- —
AI agents that turn every call into revenue for trade businesses
- HC
- —
- 3m
- —
- X
- —
Voice AI Agents for Debt Collection
- HC
- 12
- 3m
- ▲ 20.0%
- X
- —
Top movers in category
- ElevenLabs▲ 100.4%
- Prosper▲ 50.0%
- LiveKit▲ 37.8%
- Retell AI▲ 22.9%
- Vapi▲ 21.1%
FAQ
What are Voice Agents AI agents?+
Voice Agents covers companies building autonomous or semi-autonomous AI agents for this use case. We currently track 20 of them.
How is the Voice Agents list ranked?+
By default by X followers. Headcount growth comes from Clay enrichment; social metrics from the public X API. Missing data is shown as —.
How often is this updated?+
Weekly. Each company profile shows its own last-verified date.