Voices good enough that reps forget it's AI
14+ native British voices, real-time sentence-level streaming and the small human touches — pauses, murmurs, natural pacing — that make practice feel like the real call.
If it doesn't feel real, it doesn't transfer
Robotic, laggy text-to-speech breaks the illusion instantly — and the moment a rep stops believing the persona, the practice stops working. Rehearse was built voice-first so the pressure, the pacing and the back-and-forth match a real conversation.
Why a buyer cares: the closer the practice is to the real thing, the more the skill carries over to live calls. Realistic voice is what turns "a chatbot" into genuine rehearsal.
Practice that feels real, so skills transfer to live calls
Three things separate Rehearse's audio from a generic text-to-speech bolt-on — and they're why the practice carries over to the real thing.
Sentence-level streaming
The persona starts speaking before the full reply is even generated — audio streams sentence by sentence. Why it matters: no awkward dead air, so the conversation keeps its natural rhythm and pressure.
Natural filler murmurs
Cached "Mm, right…" and "Let me think…" fillers cover the brief moment before a reply lands. Why it matters: humans don't answer instantly — these tiny touches keep the persona believable.
Voice preview & choice
Authors preview every voice and assign the right one per scenario — a warm prospect, a curt senior buyer. Why it matters: the voice should fit the persona, so each drill feels distinct and real.
The best voice for every moment
Rehearse draws on multiple voice engines so you're never locked into one sound: Inworld for performed, characterful delivery; OpenAI for fast, expressive speech; and Azure neural voices for breadth and reliability.
Why a buyer cares: a multi-provider approach means a wide range of authentic British accents and tones, plus resilience — if one provider has an issue, your training keeps running.
Inworld
Performed, characterful
OpenAI
Fast & expressive
Azure
Neural breadth
Hear it for yourself
Book a demo and we'll run a live voice roleplay using a persona built from your own playbook.