Unlimited text to speech, actually unlimited.
Kokoro, the open-weight engine on our roster, is unlimited on every plan including Free. No character meter touches it, no soft limit waits behind the word, and drafts cost nothing however many times you regenerate. The premium engines are metered, and we print that meter instead of hiding it.
One engine with no meter, and a printed meter on the rest.
The same rule the product enforces, written out. Kokoro jobs never count toward an allowance; only premium-engine minutes do.
Kokoro is unlimited on every plan
Including Free. Generations on Kokoro skip the usage meter entirely: they are not counted, capped, or carried against any allowance, and the output exports as MP3.
Drafts cost nothing
Change a word, regenerate, listen, again. Because the draft engine has no meter, a ferocious editing session costs exactly what a quiet one does: nothing.
Premium engines carry flat allowances
The expressive engines are metered by plan: about 10 premium minutes a month on Free, about 10 hours of premium audio a month on Creator, about 30 hours of premium audio a month on Studio. Flat price, printed cap, no per-character charges on top.
Free
$0 foreverUnlimited Kokoro, plus about 10 premium minutes a month.
Creator
$15 / moUnlimited Kokoro, plus about 10 hours of premium audio a month.
Studio
$49 / moUnlimited Kokoro, plus about 30 hours of premium audio a month.
These are the same caps the product enforces, not marketing rounding. The full grid lives on pricing and the metering details on usage and limits.
This is Kokoro, the engine with no meter.
A real Kokoro generation, recorded unedited and served as a file, because we do not do fake demos. The same voice is waiting in the studio.
“The northern lights moved across the sky like a slow, breathing tide.”
Kokoro is our fastest engine and the one we route drafts to; the premium engines score higher on expressiveness, which is exactly why they are the metered ones. The honest profile, scores included, is on the Kokoro page.
So what is the catch?
On Kokoro, there is not one. Here is what the word unlimited usually hides elsewhere, and the honest shape of our version.
The usual catch: soft limits
Across this industry, unlimited often means a fair-use clause, throttling past a threshold, or a credit system wearing a generous costume. Read the fine print under that word wherever you see it, including here.
Our version has no asterisk
Kokoro generations are simply never counted. There is no fair-use ceiling waiting at the end of a heavy month, because an open-weight engine costs so little to serve that metering it would be theater.
The honest trade
Unlimited applies to the draft engine, not the whole roster. The expressive premium engines are metered by plan, and Kokoro is not our blind-test winner. We would rather print that than rent the word.
The arithmetic that makes an unmetered engine possible, with the real rates behind it, is written up in why our free tier has an unlimited engine.
Three steps to unlimited drafting.
Step 1: Paste your script
Open the studio and drop in anything from one line to a chapter. The free plan starts without a card.
Step 2: Pick a Kokoro voice
Choose the engine with no meter and audition voices freely. Regenerate as often as the words demand.
Step 3: Export, or go premium for the keeper
Download the MP3, or spend your plan's premium minutes rendering the final take on an expressive engine.
Unlimited, interrogated.
Is it really unlimited, or unlimited with an asterisk?
Can I use the unlimited audio commercially?
What about the premium engines? Are they unlimited too?
Do I need a credit card to start?
Stop rationing your drafts.
Open the studio, pick Kokoro, and regenerate until the words are right. The meter never starts, and the files are yours either way.