Guide, updated Oct 16, 2026
Best voice agent platforms
Platforms for phone and voice agents. We list 3 voice agent platforms. Summaries come from each vendor's own site and every link was checked on or before Oct 16, 2026.
Shortlist
All 3 at a glance
Alphabetical. Nothing in this guide is a paid placement.
| Tool | What it does | Open source | More |
|---|---|---|---|
| ElevenLabs Agents | Build and deploy chat and voice agents on ElevenLabs. | No | Alternatives |
| Retell AI | Voice agents for inbound and outbound phone calls. | No | Alternatives |
| Vapi | Developer platform to build, test, and deploy voice AI agents. | No | Alternatives |
How to choose
What to check before you pick
- Channel: phone calls (inbound, outbound), web voice, or both.
- Latency and interruption handling in real conversations.
- Model choice: bring your own LLM, voice and transcription providers, or use bundled ones.
- Testing and monitoring tools for calls.
- Pricing unit: usually per minute. Check each vendor's pricing page.
This checklist is general advice. Check each vendor's docs and pricing page for current details.
The tools
Each option in one paragraph
ElevenLabs Agents
elevenlabs.ioBuild and deploy chat and voice agents on ElevenLabs.
In their words: “Deploy AI Agents in Minutes, Not Months | Chat & Voice”
Retell AI
retellai.comVoice agents for inbound and outbound phone calls.
In their words: “AI Voice Agents Platform to Automate Phone Calls | Retell AI”
Vapi
vapi.aiDeveloper platform to build, test, and deploy voice AI agents.
In their words: “Vapi - Build Advanced Voice AI Agents”
Head to head
Compare them side by side
FAQ
Questions
Which voice agent platforms does Agent Stack Directory list?
3: ElevenLabs Agents, Retell AI, Vapi.
Which of them are open source?
None of them is marked open source in our data.
How is this list ordered?
Alphabetically. No placement in this guide is paid. Sponsored and featured tools are labeled elsewhere on the site and never reordered here.
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