Walkthrough VO that keeps pace with the release train.
The product changes faster than a voice session can be booked. Generate the walkthrough read with real style and speed controls, re-render when the UI does, and lay a generated bed underneath, all before the feature flag flips.
No credit card · Real engines · The audio is yours
Feature intro: twenty seconds over a screen recording
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MAI Voice 2, voice Harper: real style and speed controls, so the same script renders cheerful for the launch cut and measured for the documentation version.
- ~330
- characters in a 20-second feature intro
- 0.5-2x
- real speed range on MAI Voice 2
- 4
- styles beyond neutral: cheerful, excited, sad, angry
What Product Demos actually needs.
Demo VO has the shortest shelf life in marketing: the UI moves, the button gets renamed, and the polished video is suddenly showing the old flow. Re-booking a narrator for every release means the demo library is always a version behind, so teams ship silent screen recordings instead. The fix is a read you can regenerate the day the release lands, with controls for energy and pace so the same script fits a launch cut and a docs walkthrough.
Sales wants a walkthrough video for the new feature by Friday, and the founder's voice memo is not going to cut it. The product changed twice while the last demo was being voiced. You need VO that keeps pace with the release train, with enough energy to carry a screen recording.
Real features, mapped to the job.
Every item here works today, or says plainly where it is still in progress.
Real style and speed controls
MAI Voice 2 accepts genuine style and speed parameters, with an intensity dial, so the launch cut can run brighter and the tutorial can slow down, from one script.
Keep pace with releases
When the UI changes, re-render the affected lines in minutes. The demo library stops trailing the product by a version.
Beds for the background
Sound & Music composes instrumental beds live today, so the walkthrough gets an understated track without a stock-library hunt.
Own the VO
Export MP3 or WAV with commercial rights and no watermark, cleared for the site, the deck, and the campaign.
How it goes, step by step.
Step 1: Script to the screen recording
Write the VO against the captured flow, one line per beat, so the read lands on the right click.
Step 2: Set style and speed on MAI
Pick Harper, set the style and pace for this cut, and generate. The controls are real engine parameters, not a filter.
Step 3: Re-render what the release broke
When a button gets renamed, regenerate that line alone and drop it back on the timeline.
Step 4: Add a bed and export
Generate an instrumental bed in Sound & Music if the cut needs one, then export everything. It is yours.
Keeping a demo library honest across releases.
Version the script with the feature
Store each demo script next to the feature's release notes and stamp both with the version. When support links a walkthrough, anyone can see which build it shows, and when the UI moves you know exactly which lines to re-render instead of re-watching every video to find out.
One script, two energies
The launch cut and the docs walkthrough should not sound the same even when the words match. Render the demo VO twice on the styled engine, brighter for the campaign and measured for the help center, and each surface gets the read its audience actually expects.
Start with MAI Voice 2.
MAI Voice 2 has real style and speed controls with an intensity dial, which is what demo VO needs: the same script at launch energy or tutorial calm, set by you rather than luck.
Microsoft voice with real style and speed controls.
- Quality Elo
- 1007 *
- Latency
- 2426 ms (measured 2026-06-10)
- Languages
- 1
- Rights
- Commercial use; outputs are yours
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The honest answers.
What Cantari can and cannot do for product demos today, in plain language.
What does the same script sound like in different styles?
Can I add background music to the demo?
Is the VO cleared for the website and ads?
Try Cantari for product demos.
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