Give your product a voice, a face, ears, a feel for emotion, a conversation and an ear for fakes.
Lifelike speech, transcription that hears feeling, voice agents, AI-voice detection and talking avatars. One account, one key, one balance.
Free plan, no card. Every sample here is real, unedited output.
[joy] You actually did it! [laughing] I knew you would.
Talking characters drawn on your user’s own device, lip-synced to any voice. No video servers.
[sigh] I wish you could just quit that job. [sigh] I could take care of you.
Listens, thinks and answers, and stops the moment your caller talks over it.
Everything you need to give your product a voice, a face and ears
Seven products, one API key, one balance of credits.
Text to speech
Overtone468 voices in 32 accents that laugh, sigh and whisper on cue. 48 kHz, streamed while it is made.
from $0.01 per 1K charactersVoiceSpeech to text
UndertoneAccurate words from files up to an hour, and live. Word timings, sounds and emotion on live audio and clips up to 60 seconds.
from $0.055 per hourVoiceEmotion recognition
UndertoneHow it was said: the feeling of every utterance with a score for each emotion, plus age, gender and accent.
with every yoob-asr-1 transcriptVoiceVoice agents
DuotoneUndertone listens, a language model thinks, Overtone answers. Interrupt it and it stops.
about $0.013 a minuteVoiceAI voice detection
TruetoneHuman or AI, scored for each sentence and for the voice as a whole. Audio is never stored.
$0.03 per minute of audioAvatarsLive avatars
AvatarsTalking characters drawn on the user's device, lip-synced to any voice. $0.01 per minute with your own voice, $0.05 a minute with ours.
from $0.01 per minuteAvatarsAvatar video
VideoPick a character, give it a script or your recording, and download the MP4.
$0.05 per minute of videoPricing that scales with you
Start free. Plans add credits worth their price; every service spends them at its own rate.
- Free$0free to start
- Starter$29a month, 2,900 credits
- Pro$99a month, 9,900 credits
- Scale$499a month, 49,900 credits
Start building in minutes
A free account gets an API key and 10 credits a month.