Voice/Phone for AI agents
Featured sponsor ★
Your tool here — sponsor The Agent Stack
Put your product in front of developers choosing infrastructure for AI agents.
Compare voice/phone tools
| Link | ||||
|---|---|---|---|---|
| Usage-based (per minute) | Proprietary | ✓ Yes | Visit ↗ | |
| Pay as you go (per minute); $10 free credits | Proprietary | ✓ Yes | Visit ↗ | |
| Free start; $0.14/min usage | Proprietary | ✓ Yes | Visit ↗ | |
| Usage-based; free trial | Proprietary | ✓ Yes | Visit ↗ | |
| Free tier; paid from $50/mo | Open source | ✓ Yes | Visit ↗ | |
| Free tier; paid subscriptions | Proprietary | ✓ Yes | Visit ↗ | |
| Paid; enterprise from $30,000/yr | Proprietary | ✓ Yes | Visit ↗ | |
| Free (open source) | Open source | ✓ Yes | Visit ↗ | |
| Usage-based; 10,000 free minutes/mo | Proprietary | ✓ Yes | Visit ↗ |
All voice/phone tools
Platform for building voice AI agents with phone numbers
Usage-based (per minute)ProprietaryVoice agents for inbound/outbound calls
Pay as you go (per minute); $10 free creditsProprietaryAI phone calling agents for enterprises
Free start; $0.14/min usageProprietaryPhone numbers voice and SMS APIs
Usage-based; free trialProprietaryRealtime audio/video infra and Agents framework
Free tier; paid from $50/moOpen sourceText-to-speech and conversational voice agents
Free tier; paid subscriptionsProprietaryNo-code voice AI agents for phone calls
Paid; enterprise from $30,000/yrProprietaryOpen-source framework for voice and multimodal agents
Free (open source)Open sourceWebRTC video/voice APIs used for realtime AI agents
Usage-based; 10,000 free minutes/moProprietary