What is Kaizen Speech Studio?

Kaizen Speech Studio is a Windows app for AI text-to-speech, transcription, AI video dubbing, YouTube download and media conversion. It uses 700+ Microsoft Azure neural voices across 80+ languages and works on a bring-your-own-key (BYOK) basis — you connect your own Azure key.

What is BYOK (Bring Your Own Key)?

BYOK means you connect your own Microsoft Azure key to Speech Studio. Text-to-Speech, Transcribe and Video Dubbing run through your own Azure resource, so you benefit from Microsoft's free tier and low pay-as-you-go rates directly. Your key stays on your machine.

Can I try the voices before connecting an Azure key?

Yes. Every new user gets $1 in free trial credit which you can use to test a few voices. Once the balance is used up you connect your own Azure key. If you want to try more, email support@kaizen-apps.com and we review individual requests.

Are you as good as ElevenLabs?

Our voices are powered by Microsoft Azure and are extremely good. Some ElevenLabs voices play emotion better, but they cost far more. If your need is not that niche, Azure neural voices give you natural, professional quality at a fraction of the price.

Are you associated with Microsoft? How are you offering Azure voices?

No, we are not associated with Microsoft in any way. We built a wrapper that makes it easy for any user to use their own Azure keys in our product and take advantage of Microsoft's free offers and low rates.

Will I still need an Azure key if I upgrade to Pro or Lifetime?

Yes. Upgrading to Pro or Lifetime unlocks features like the full SSML editor, Transcribe, AI Dubbing and Media Convert, and lets you save your Azure keys in Speech Studio. An Azure key is still needed for TTS, transcription and dubbing — you get it yourself, and we provide a help guide.

Do you help set up the Azure key?

Yes, we help users on the Lifetime plan set up Azure. Due to time constraints we can't assist Free or Pro (1-year) users with setup, but you can do it yourself using our step-by-step help guide at kaizen-apps.com/help/speech-studio/azure-speech-service-setup/.

Can I use the generated audio commercially?

Yes. The voices come from Microsoft Azure. Microsoft's terms allow commercial use of the generated audio for YouTube videos, podcasts, audiobooks, e-learning, apps and broadcasts, provided you follow their directions (such as disclosing the voices are not real persons). You own the output.

Can I download YouTube videos and extract audio?

Yes. The Download Video feature downloads YouTube videos in multiple quality formats, and can extract MP3 audio. With Media Convert you can also convert audio to video and back, remove noise and improve output quality.

Please try the free version first. If you purchase Pro or Lifetime and it is not right for you, we offer a 3-day no-questions-asked refund. Email support@kaizen-apps.com with your order details.

AI Voice Studio for Windows

Give your words a human voice.

Paste your text, pick from 700+ natural Microsoft Azure voices in 80+ languages, and generate studio-quality audio in seconds — plus transcription, AI dubbing and more.

Hear the voices

9 hours of TTS + 5 hours of transcription free every month Your own Azure key (BYOK)

Premium HD voices

MP3 in seconds

Kaizen Speech Studio — Text to Speech

700+Neural voices

80+Languages

$1Free trial credit

$0monthly fees, ever

Own it, don't rent it

Studio-quality audio — without the monthly meter.

Most AI-voice tools charge a premium monthly subscription, forever. Speech Studio is a one-time license — and with your own Azure key, most creators never pay for audio at all.

The part everyone misses: free every single month.

The $1 trial credit lets you test voices right away — no Azure key needed. Then connect your own free Microsoft Azure key (BYOK) and Azure's free tier renews this allowance every month:

9 hours / mo

Text-to-speech — free

via your own Azure free tier (BYOK)

5 hours / mo

Transcription — free

via your own Azure free tier (BYOK)

The usual way

A premium monthly subscription with per-character and per-minute caps. Stop paying and you lose access — and the price climbs as you scale.

The Kaizen way

A one-time license. Generous free audio every month via your own Azure key — and anything beyond it is billed by Microsoft at low pay-as-you-go rates, not a marked-up middleman fee.

	Typical AI-voice subscription*	Kaizen Speech Studio
Pricing model	Monthly, forever	One-time — $49/yr or $99 lifetime
Free every month	Limited trial only	≈ 9 hours TTS + 5 hours transcription (Azure free tier, BYOK)
Past the free tier	Higher tiers + per-character caps	Microsoft's low pay-as-you-go rates (billed by Microsoft, not us)
Cost over 3 years	≈ $790 and climbing*	$99 once — then $0 within the free tier
You own it	No — rented	Yes — forever

Most users save $600–$800+ over three years — and own the tool.

*Illustrative — AI-voice subscription prices vary by provider and plan. Azure usage beyond the free tier is billed directly by Microsoft at low pay-as-you-go rates.

Made for creators

One voice studio for every project.

From a weekly YouTube channel to a full audiobook — Speech Studio handles the whole pipeline on your desktop.

YouTube voiceovers

Narrate videos in a natural voice — no mic, no retakes. Pick a style, generate, drop it on the timeline.

Audiobooks

Turn TXT, PDF and Word docs into long-form narration — single generations as long as ~30 minutes.

E-learning

Clear, consistent narration for courses and training in 80+ languages — update a line, regenerate in seconds.

Podcasts

Intros, ads and full episodes — or blend multiple voices into a scripted dialogue with the SSML editor.

Apps & IVR

Generate prompts and in-app voice in dozens of locales — export to MP3 or WAV and ship.

Global reach

Dub a finished video into another language with AI Dubbing and reach an audience across the world.

The voices

700+ neural voices. Filter, preview, pick.

Every Microsoft Azure voice in one grid, with gender, type and a play-preview button. Filter by gender, age, language and country, then refine by style or scenario to find exactly the right read — across 80+ languages.

Filter & refineBy gender, age, language, country, voice type, style and scenario.
Per-voice style samplesHear "cheerful" vs "calm" before you commit a single character.
Multi-voice SSML editorBlend many voices and styles in one script for dialogue and drama.

Voice picker

More than text-to-speech

A whole voice & media toolkit.

Speech Studio doesn't stop at narration — it runs your entire voice and media workflow in one Windows app.

Transcribe

Transcription

Live mic or audio file, into text.

Convert any audio to text — a file or a live microphone recording — with real-time waveform, auto language detection and one-click export.

AI Dubbing

AI Video Dubbing

Turn one video into many languages.

Pick a source and target language and Speech Studio produces a dubbed version of your video using Azure Video Translation, with optional embedded subtitles — your original stays untouched.

YouTube downloadGrab YouTube videos in multiple quality formats, or extract the MP3 audio.

Media convertConvert audio & video both ways (MP3 ↔ WAV ↔ MP4), remove noise and boost quality.

Everything inside

Built for serious output.

The details that make Speech Studio a tool you'll actually use every day.

700+ neural voices

Natural, human-sounding Azure voices — including premium HD — across 80+ languages.

Rate, pitch & volume

Five presets each, or custom values, to dial in exactly the delivery you want.

Multi-voice SSML editor

Combine voices and styles in one generation with one-click inserts, or paste raw SSML.

Import documents

Speak TXT, PDF and Word files fast — single generations as long as ~30 minutes.

MP3, WAV & more

Export to MP3 or WAV, plus OGG and FLAC on save — ready for any timeline.

Local history

Every generation saved on your PC — see the cost, mark favourites and re-run with one click.

Honest pricing

Start free. Own it for life.

Every new user gets $1 in free trial credit to test voices. One-time license — no subscription. Bring your own Azure key for TTS, transcription and dubbing.

Free

forever · $1 trial credit

$1 free credit to test voices
700+ Azure neural voices, 80+ languages
Text-to-Speech with rate / pitch / volume
MP3 & WAV export
SSML editor, Transcribe, AI Dubbing, Convert

Pro

$49

1 year · no auto-renewal

Everything in Free
Full multi-voice SSML editor
Transcription (speech-to-text)
AI Video Dubbing
Unlimited Download Video + Media Convert
PDF / Word import + save your Azure keys

Lifetime

$99

one-time · yours forever

Everything in Pro
No renewals, ever
Lifetime updates
We help you set up your Azure key
Priority support

BYOK — connect your own Azure key 3-day no-questions-asked refund Azure cost (if used) billed by Microsoft

Honest about how it works.

The voices are Microsoft Azure neural voices. Speech Studio is a wrapper that makes it easy to use your own Azure key — we're not affiliated with Microsoft in any way.

Real Azure voicesThe same neural voices enterprises use — we don't claim them as our own.

BYOK, key stays localYou connect your own Azure key; it stays on your machine, billed by Microsoft.

You own the outputCommercial use allowed — YouTube, podcasts, audiobooks, e-learning. The audio is yours.

Your words, in 700+ voices — for one payment.

Download Speech Studio free and test the voices with $1 of trial credit. Connect your own Azure key, or upgrade once for the SSML editor, transcription and AI dubbing.

See pricing

$1 free trial credit · One-time license · No subscription · You own the output