Give your voice agent a voice callers stay on the line for
Human-sounding speech that streams from the first byte. Clone your brand’s voice from a 30-second clip and pay $15 per 1M characters, with no commitment to scale.
No credit card required
Press play to hear it
- per 1M characters, pay as you go
- $15
- languages: EN, ES, FR, DE, IT, PT
- 6
- of audio to clone a voice
- 30 sec
- commitment to scale concurrency
- $0
Your agent’s first words, in minutes
- 1
Create a free account
Sign up and grab your API key from the dashboard. No credit card required.
- 2
Pick a voice, or clone one
Audition voices across languages and accents in the voice library, or clone your own from a 30-second clip.
- 3
Stream speech into your agent
Open a WebSocket, send text, and play audio as it streams back from the first byte.
No credit card required
URL = (
"wss://tts.us.assemblyai.com/v1/ws"
"?voice_id=aai-kyla&language=english"
"&sample_rate=24000&encoding=pcm_s16le"
)
async with websockets.connect(
URL, additional_headers={"Authorization": API_KEY}
) as socket:
await socket.send(json.dumps({
"type": "Generate",
"text": "Your order 4817 shipped this morning.",
}))
await socket.send(json.dumps({"type": "Flush"}))Tuned for live calls, not narration
Natural to listen to, quick to respond, and ready for any call volume.
Voices that sound human
Trained on millions of hours of audio, including real conversations, so callers get answers instead of hanging up.
Streams from the first byte
Built for low latency, from the architecture to the inference engine, so your agent answers before callers fill the silence.
Concurrency that scales with you
Absorb inbound and outbound spikes on usage-based pricing. Your limits grow with call volume, with nothing to commit to up front.
Instant voice cloning
Clone your brand’s voice from a 30-second clip, with permission confirmed at upload, and put it live today.
A deep voice library
Find the voice that fits your agent across languages, accents, and regions, with new voices added continuously.
Six languages, right accent
Set the language and your agent speaks English, Spanish, French, German, Italian, or Portuguese from the first word.
One rate, every voice
Priced by usage, scaled by usage. Your concurrency limit never requires negotiation.
$15 /1M characters
- Billed on input characters, at one flat rate
- Cloned voices cost the same as library voices
- EU processing costs the same as US
- No per-voice fees, minimums, or contracts
- No spend commitment to unlock concurrency
No credit card required
Where every call is a first impression
-
Inbound support
Answer order questions at any hour without dead air.
-
Appointment booking
Confirm a time and read back the details clearly.
-
Outbound reminders
Run reminder campaigns and let concurrency scale with them.
-
Order taking
Repeat the order back and confirm the total during the rush.