SulafatWarm narration
Google GeminiEN-US
Back to Productsgemini-ttsgpt-voice
Text to speech, directedGive your words
Give your words
a real voice.
Turn any text, file or link into a studio-grade voiceover. 100+ voices from four leading providers, line-level direction, and an assistant that writes and shapes the script with you.
No credit cardFree monthly SparksFour leading providers
launch-announcement.mdRender
A
AriaGoogle Gemini · EN-US
Hey everyone emphasis — big news today. pause We just shipped Narration Studio.
T
AtlasOpenAI GPT · EN-US
whisper And it honestly sounds incredible. chuckle
0:08 / 0:14
Every voice, one workspace
100+ voices from four leading providers
OpenAI GPT, xAI Grok, Google Gemini and Amazon Polly — side by side in one library. Audition, mix providers in a single script, and never get locked in.
OnyxDeep & cinematic
OpenAI GPTEN-US
ZhiyuBright & clear
Amazon PollyZH-CN
CharonCalm explainer
Google GeminiAR-EG
EveEnergetic host
xAI GrokEN-US
TakumiSoft-spoken
Amazon PollyJA-JP
- OpenAI GPT
- xAI Grok
- Google Gemini
- Amazon Polly
New providers and voices added continuously — you're always on the frontier.
One click, from anything
Drop in a file or link. Pick the format.
Start from a PDF, doc, article or URL. One click turns it into the kind of audio you need — and the assistant writes the script to match.
Drop a file, or paste a URL
PDF · DOCX · TXT · Markdown · web article
q3-product-update.pdf · 14 pages attached
Explain
Turn dense material into a clear, friendly explainer anyone can follow.
Summarize
Condense a long document into a tight, spoken recap.
Read aloud
Faithful narration of the source, word for word.
Podcast dialogue
Two hosts riff on the material, back and forth.
Voiceover script
A polished VO script, timed to your runtime.
Script assistantonline
This intro runs long — can you cut it to about 20 seconds and make it warmer?
Done — trimmed to ~19s and softened the open. I added a short pause before the reveal so it lands. Want me to convert it to a two-host dialogue?
Convert to dialogue ✓Make it punchierAdd emphasis
Rewritten · 19s · 2 speakers
Aria: Quick one — we just shipped something we're proud of. Atlas: And it sounds this good out of the box.
Script assistant
A writing partner for every line
Don't have the script yet — or not the right one? The assistant writes, rewrites and reshapes it with you, then hands it straight to your voices.
Replace selectionRecommend wordingWrite from a briefRewrite the toneShorten to a durationExpandConvert to dialogueAdd pauses & emphasisAdapt for an audienceSimplify
Direct every word
Add a pause, a laugh, a whisper — inline
Drop sounds and performance cues right into the text. Select a word, pick a tag, and the voice performs it — no settings panels, no guesswork.
Sound effects
Human, non-verbal sounds the voice makes
pauselong pausehum tunelaughchucklegigglecrytsktongue clicklip smackbreathinhaleexhale
Speaking styles
How a line is performed and delivered
whisperloudslowfastsoftbuild intensitydecrease intensityhigher pitchlower pitchsing-songsinginglaugh-speakemphasis
Tags travel with the text — copy a directed line and the performance comes with it.
Say it right, every time
Pronunciation rules that stick
Teach it your names, brands and jargon once with replacements, phonetic spellings or IPA — then scope each rule to a line, a project, or the whole team.
WrittenSpoken asTypeScope
SmileToAIsmile-too-AY-eyePhoneticTeam
GIFjifReplaceProject
Néance/neɪ.ɑ̃s/IPALine
v2.1version two point oneReplaceProject
Set it once, reuse foreverApplyApplyApplyApply
Save a whole setup as a preset
Bundle a script's speaker voices, language, output format and delivery into one preset — then apply it to the next project in a single click.
Brand explainer
1 voice · EN-US · MP3 · calm
Two-host podcast
2 voices · EN-US · WAV · lively
Audiobook
1 voice · EN-GB · MP3 · measured
Product demo VO
1 voice · EN-US · MP3 · upbeat
Iterate without the bill
Preview only what changed
Every render is saved as a version you can switch between and compare. And previews re-generate only the parts you touched — reusing the audio that didn't change.
Render history4 versions
v4
CurrentLive
Shortened intro, added pause · just now
v3
Draft
Switched Atlas → OpenAI GPT · 4m ago
v2
Draft
Whisper on the reveal line · 12m ago
v1
First render
Read-aloud of the source · 20m ago
Compare v3 ↔ v4Restore v2
Preview scope
Choose how much to re-generate. Untouched audio is reused for free.
REUSED
RE-RENDER
REUSED
You only pay for what changed — untouched audio is reused for free.
Free to start
Start narrating — on us
Every free account includes 5,000 Sparks every month — the workspace's single currency that follows you across every SmileToAI product. No credit card required to begin.
Start freeNo credit card required
5,000Sparks
Free, every month
One currency across every SmileToAI product.
One currency across every SmileToAI product.
Ready to hear your words out loud?
Render your first voiceover in seconds — every top voice, line-level direction and a script assistant, all in one place.
Guides & resources
How to Add Text to Speech to a PowerPoint Presentation
How to Add an AI Voiceover to YouTube Videos
What is an AI avatar (speaking-head video)?
What is an AI voiceover?
What is text to speech (TTS)?
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