Kokoro

Kokoro TTS

An 82M-parameter open model from Hexgrad that delivers studio-quality speech at nearly 100x real-time.

Whakawhanake mō te tepe o ngā tohu 5,000

Whāriki i tōna kupu i roto i ngā tohu SSML mō te whakahaere tika:

<speak><prosody rate="slow">Slow speech</prosody></speak>

E mōhio ana ngā tohu ki te tauira i kōwhiria - ka kōwhiria kia whakawātea tētahi ki roto i tōna kupu i reira ka puta ai:

Ka pānui tēnei tauira i te kupu noa, nā reira ka whakakāhoretia ngā tohu ā-waitara. Mō te āhua o te tohu-taihi, ka huri ki tētahi tauira whakamārama pēnei i a Orpheus, Bark rānei.

Ka tautuhia ngā tohutohu ā-ringa (wāhi = tohutohu):

-12 +12
0.5x 2.0x
Waihoki me Piper, VITS, MeloTTS
Ka puta tēnei te oro i waihangatia e koe. Ka kōwhiria tētahi tauira, ka tāurua te kupu, a, ka kōwhiria te Whakatū.
Kua angitu te whakaputanga oro
0:00
Waihoki i te oro Whakahua.srt Ka ngaro te pānga i roto i te 24h
Tauwhāinga wātea: te whakamahinga whaiaro. Whakawhiwhinga hokohoko mai i te $5/mo
E manakohia ana e TTS.ai? Whakapāpāho ki ōna hoa!

Mo Kokoro

Kokoro, built by Hexgrad, is a deliberately tiny 82-million-parameter model that punches far above its size class. It uses a StyleTTS + ISTFTNet architecture and was trained on roughly 1,200 hours of speech, yet generates audio close to 100x faster than real-time on a GPU while staying remarkably natural and expressive. It covers English, Japanese, Chinese, French, Italian, Portuguese, Spanish, and Hindi with a varied set of expressive voicepacks, and supports streaming. The combination of small footprint, low latency, and a permissive license has made Kokoro one of the most popular free models for high-volume and streaming use — it carries the largest share of traffic on TTS.ai.

Pai mo: High-quality TTS with minimal latency, streaming applications

Ka tirohia katoa Kokoro ngā oro

I te tirohanga

Ka whakawhanakehia
Hexgrad
Ka taea te whakawātea
Apache 2.0
Karaka
free
Āhuatanga
fast
Whakakōrero reo
Kāore
reo
English, Japanese, Chinese, French, Italian, Portuguese, Spanish, Hindi
Kāri nui rawa
500

Kokoro ngā oro

Adam

English
Waihoki Male

Alex

Spanish
Waihoki Male

Alex

Portuguese
Waihoki Male

Alpha

Japanese
Waihoki Female

Alpha

Hindi
Waihoki Female

Bella

English
Waihoki Female

Dora

Portuguese
Waihoki Female

Dora

Spanish
Waihoki Female

Emma (British)

English
Waihoki Female

George (British)

English
Waihoki Male

Gongitsune

Japanese
Waihoki Female

Heart

English
Waihoki Female

Isabella (British)

English
Waihoki Female

Lewis (British)

English
Waihoki Male

Michael

English
Waihoki Male

Nicola

Italian
Waihoki Male

Nicole

English
Waihoki Female

Omega

Hindi
Waihoki Male

Sara

Italian
Waihoki Female

Sarah

English
Waihoki Female

Siwis

French
Waihoki Female

Sky

English
Waihoki Female

Xiaobei

Chinese
Waihoki Female

Xiaoni

Chinese
Waihoki Female

Xiaoxiao

Chinese
Waihoki Female

Yunjian

Chinese
Waihoki Male

Kokoro TTS - FAQ

Yes. Kokoro is released under the Apache 2.0 license and sits in the free tier, so it can be used commercially at no cost.

Kokoro is only 82M parameters and uses an efficient StyleTTS + ISTFTNet design, letting it generate audio nearly 100x faster than real-time on a GPU with just ~1.5GB VRAM while staying natural-sounding.

Kokoro supports English, Japanese, Chinese, French, Italian, Portuguese, Spanish, and Hindi, each with its own expressive voicepacks. It does not support voice cloning.
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