Test ten reads of a spot before you commit to one.
A spot lives or dies on the read. Generate the same script in several voices and tones, hear which one converts the idea, and export the winner, all before a single booking.
No credit card · Real engines · The audio is yours
Fifteen-second radio spot: Harbor Coffee
warm Five a.m. The boats are out, the street is quiet, and the first pot is already on.
confident Harbor Coffee. Roasted here, poured here, gone by noon.
plain Open at five. You know where.
Gemini Flash, voice Kore: run the same three lines through [warm], [confident], and [playful] and let the client hear the difference instead of imagining it.
- ~250
- characters in a 15-second spot
- 10
- reads of one spot, still the same flat allowance
- 0
- studio bookings to audition a voice
What Advertising actually needs.
Choosing a voice for a spot is usually a gamble made before you can hear it: you book a read, then find out in the edit whether the tone was right. Generating the same line across several voices and deliveries lets you compare reads side by side and pick the one that actually carries the message, instead of committing to a booking on a hunch.
The client meeting is Thursday and the script is approved, but nobody can agree on the read: confident or warm, fast or measured. Booking a session to find out is the expensive way to settle an argument. You want to walk in with five takes and let the room react.
Real features, mapped to the job.
Every item here works today, or says plainly where it is still in progress.
Many reads of one line
Generate the same script across different voices and bracketed tones, then compare them directly to find the read that lands.
Acted, directed delivery
Bracketed [confident] or [playful] cues shape the tone of a spot. Gemini Flash performs the direction so the read carries intent.
Fast turnaround
Regenerate a line in seconds when the copy changes, so the audio keeps pace with last-minute edits.
Own the spot
Export MP3 or WAV with commercial rights and no watermark, cleared for the campaign.
How it goes, step by step.
Step 1: Paste the spot copy
Drop the script into Text to Speech with bracketed cues for tone.
Step 2: Generate several reads
Run the same line across voices and tones to compare deliveries.
Step 3: Pick the winner
Hear them side by side, choose the read that carries the message, and export it.
Generated voice in advertising, without the gray areas.
Clearance is the boring superpower
Advertising runs on usage rights: who recorded the read, for which media, for how long, renewed when. A generated spot skips that negotiation. The export carries commercial rights worldwide with no renewal window, so the same file can run digital, radio, and in-store without a second buyout conversation.
Test reads before the brief hardens
The cheapest moment to change an advertising direction is before anyone books talent. Render the script in five voices the afternoon the copy lands, play them in the room, and let the read shape the brief instead of the brief gambling on the read.
What we will not help you make
No imitating a competitor's announcer, no celebrity soundalikes, no voice that trades on someone else's identity. Cloning here requires a consent attestation, and advertising work that needs a real person's voice still needs that person. The line is bright because your legal team wants it bright.
Start with Gemini Flash.
Gemini Flash acts the [confident] or [playful] cues a spot relies on, so you can audition genuinely different reads of the same line rather than the same flat delivery.
The only engine here that acts your bracketed [emotion] directions.
- Quality Elo
- 1225
- Latency
- 2770 ms (measured 2026-06-10)
- Languages
- 24
- Rights
- Commercial use; outputs are yours
“[confident] Same great taste. Now in a bottle you can actually open.”
The honest answers.
What Cantari can and cannot do for advertising today, in plain language.
Can I compare different reads of the same line?
Is the audio cleared for commercial use?
Can I match a specific celebrity or brand voice?
Try Cantari for advertising.
Free to start, no credit meter. Open the studio and hear it for yourself.