Omnia Voice vs ElevenLabs Agents

ElevenLabs built the best synthetic voices in the industry. That is not a concession, it is simply true, and their agents product inherits it.

If how your agent sounds is the deciding factor, this page will not persuade you otherwise.

Choose ElevenLabs if

• Voice quality is your primary criterion
• You want the largest voice library, including cloning
• You are already using them for synthesis and want agents in the same place
• Brand voice matters more to you than conversational behaviour

Choose Omnia if

• You need the agent to understand, not only to speak
• You want one rate that already includes the reasoning, rather than a voice rate with the model billed on top
• You need it to act — call your APIs mid-conversation, look things up, hand off to a person
• You need EU residency or self-hosting

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One system, not an assembly

Omnia connects audio directly to the reasoning layer. There is no speech-to-text stage in the middle, which is where the round-trip time goes and where nuance gets dropped. One design decision, two consequences worth having:

Speed. About 250 milliseconds to first response, because processing starts while the caller is still speaking rather than after a transcript is finished.

Robustness. Accents, proper nouns, and callers who switch language mid-sentence survive, because there is no transcription step to flatten them first. That is what 50+ languages means in practice — not a list on a pricing page, but comprehension over a narrowband phone line, at conversational pace.

Speaking a language is not conversing in one

This is the distinction the whole page turns on.

ElevenLabs advertises thousands of voices across 70+ languages. That is synthesis — producing natural speech in a language, and they are excellent at it.

Understanding a caller with a regional accent over a narrowband phone line, recognising a name, noticing they have switched language mid-sentence, and responding inside 250 milliseconds is a different problem. Omnia is built around that one: audio goes directly to reasoning, with no transcription step in between to lose the nuance.

A demo will separate these faster than any table. Ours is on the homepage.

Doing things, not only saying them

An agent that talks well and cannot act is a very good answering machine.

Omnia agents call your systems mid-conversation — check real stock, book a real slot, write to your CRM — with your credentials, your timeouts, and parameters the model never sees. They read your documents. They hand off to a human when they should.

If your use case is genuinely conversational rather than transactional, this matters less. If a caller ever needs a real answer from a real system, it is the whole game.

Cost

Omnia charges one rate for the AI:

Recognition, reasoning and synthesis in one number.

ElevenLabs Agents also bills per call minute, and its headline rate is the same $0.08. The difference is what the number covers: theirs is the voice layer, with the language model and any telephony billed separately on top, and minutes bundled into plan tiers rather than sold flat. Exceeding your concurrency limit bills at $0.16/minute — double — until you are back under it.

So the comparison is not $0.08 against $0.08. It is one predictable number against a rate that depends on which model you chose and how many calls arrived at once.

The first two rates are self-serve: sign up and start. The volume rate is negotiated rather than unlocked automatically, so talk to us if you are running at scale.

Telephony is your own, unresold.

Where it runs

Cloud, dedicated GPU capacity, or entirely your own infrastructure — the same API across all three, so moving does not change your integration code. EU data residency is the default rather than a configuration.

Self-hosting is also an exit route, not only a deployment preference. If we were acquired, pivoted, or sunset a service, a self-hosted customer keeps running. You cannot be orphaned by us.

Side by side

The honest summary

If you want the finest voice, they have it. If you want an agent that understands a Finnish caller, looks up their order, and books them in — that is a different product, and it is the one we built.