Comparison
Open vs. ElevenLabs
ElevenLabs is the best-in-class voice model with a Conversational AI product layered on top. Open is a productized voice agent that uses ElevenLabs (and others) for voice. They live at different layers of the stack.
- ElevenLabs
- Voice model
- Open
- Voice agent
- ElevenLabs Conversational AI
- SDK
- Open
- Product
01 — Overview
Open or ElevenLabs: which is right?
ElevenLabs makes the best TTS voices on the market. Their Conversational AI product is a developer kit for building voice agents on top of those voices. Open is the productized voice agent — and it uses ElevenLabs voices among others. Most Open customers get ElevenLabs voice quality without building anything.
ElevenLabs deserves the praise it gets. The voice model is the best on the market — natural prosody, emotional range, multilingual depth, voice cloning that genuinely works. If you're building a voice product and the voice quality is the differentiator, ElevenLabs is what you want under the hood.
ElevenLabs Conversational AI is the company's product layer on top of the voice model. It exposes a developer kit and dashboard for assembling agents — connect a voice, an LLM, system prompts, basic tool calling. It's well-built and improving fast. It is, deliberately, a developer product: you assemble the agent, you wire the integrations, you handle the deployment.
Open is a different product shape. Open is the finished voice agent, sold to ops teams (not engineering teams) as a deployment, not a build. It comes with the integrations (telephony, CRM, calendar, billing, helpdesk), the observability (per-call recordings, transcripts, reasoning traces, cost-per-resolution), the compliance (HIPAA, GDPR, PCI redaction, etc.), and the configuration UI (no Python required). And it uses ElevenLabs as one of the voice options.
The practical question for buyers: do you want to use ElevenLabs voice quality, or do you want to build a voice agent? The first is what Open delivers; the second is what ElevenLabs Conversational AI delivers. Most buyers want the first and don't realise it until they price out the build.
Cost is similar at the per-minute / per-resolution level for the AI work; the difference is the engineering and operational cost on top. Building on ElevenLabs Conversational AI is cheaper if you have engineering bandwidth and want maximum control. Deploying Open is cheaper if you don't.
ElevenLabs delivers
World-class voices
TTS that sounds genuinely natural, voice cloning that works, multilingual depth.
Developer SDK
Conversational AI lets engineers build voice agents on top of the voice model.
Maximum customisation
Build any agent shape, any integration, any orchestration logic.
You build it
You own the integrations, the deployment, the compliance, the analytics.
Open ships
A finished agent product
Configured in a dashboard, not built in code.
Uses ElevenLabs voices
ElevenLabs is one of Open's voice providers. Choose the voice, get the agent.
Native integrations
Telephony, CRM, calendar, billing, helpdesk — wired in.
Days to live
First production calls within hours; full agent live within days.
02 — Why it works
What makes Open the right comparison answer
ElevenLabs voice quality without the build
Use ElevenLabs voices through Open and skip the engineering work of building a voice agent on top of them.
Native telephony integrations
Twilio, Vonage, RingCentral, BT, Telstra — all native. ElevenLabs Conversational AI requires you to integrate telephony yourself.
Production observability
Per-call recordings, transcripts, reasoning traces, outcome tags, cost-per-resolution — all in the Open dashboard.
Per-resolution pricing
You pay when the AI resolves something. Voice-model minutes priced into the resolution rate.
03 — Security
Encrypted, audited, refundable
SIP over TLS for signaling, SRTP for media. Every call logged with full reasoning traces. SOC 2 Type II, GDPR-aligned, HIPAA- and PCI-ready. Backed by the Open $2M Refund Guarantee.
04 — FAQ
Open vs. ElevenLabs questions, answered
More voice AI guides