Gradium TTS API

Gradium TTS is a text-to-speech model by Gradium, available on the Venice API as tts-gradium-v1. Requests are anonymized, so the provider never sees your identity.

Gradium TTS API pricing

Model ID	Variant	Privacy	Price
`tts-gradium-v1`	Standard	Anonymized	$47.50 per 1M characters

Gradium TTS specifications

Spec	Value
Provider	Gradium
Released	Jun 5, 2026
Privacy	Anonymized
Voices	12
Formats	wav, pcm, opus

How to use the Gradium TTS API

Send requests to POST https://api.venice.ai/api/v1/audio/speech with "model": "tts-gradium-v1" and your API key.

curl https://api.venice.ai/api/v1/audio/speech \
  -H "Authorization: Bearer $VENICE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "tts-gradium-v1",
    "input": "Private AI for everyone.",
    "voice": "Alice",
    "response_format": "mp3"
  }' --output speech.mp3

Gradium TTS API FAQ

How much does the Gradium TTS API cost?

47.50 per 1M characters of input text, about

0.039 per minute of generated speech. Prices are in USD and can be paid in DIEM at parity.

What is the Gradium TTS model ID?

Use tts-gradium-v1 as the model parameter.

Is the Gradium TTS API private?

Gradium TTS is anonymized: Venice forwards requests to the provider without your identity, but the provider may retain prompt data, so use a private model for sensitive work.

How many voices does Gradium TTS have?

12 voices, for example Alice, Davi, Elise. Output formats: wav, pcm, opus.

Which endpoint does the Gradium TTS API use?

Call POST /audio/speech.

Related models

Chatterbox HD (Resemble AI) API: $50.00 per 1M characters
ElevenLabs Turbo v2.5 API: $62.50 per 1M characters
Orpheus TTS API: $62.50 per 1M characters
Qwen 3 TTS 0.6B API: $87.50 per 1M characters

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