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Bulbul v3

sarvam/bulbul-v3

Sarvam's Bulbul v3 text-to-speech for Indian languages, released February 2026 with 30+ speaker voices in 11 languages (10 Indian plus English) and pace control. Still the API default, though Bulbul v4 Flash is now recommended for new integrations.

API
curl "$AUDIOLAB_API_URL/v1/audio/speech" \
  -H "Authorization: Bearer $AUDIOLAB_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "sarvam/bulbul-v3",
  "input": "Make every word count.",
  "voice": "auto",
  "response_format": "wav"
}' --output speech.wav
Input Price
₹2,550.00 / 1M characters
Output Price
—
Input
Text
Output
Audio

Capabilities

Explore what Bulbul v3 supports, then use the API section for a request tailored to this model.

BatchVoices

Languages

English

Model Information

Provider
Sarvam AI
Product
Text-to-Speech
Release Date
Feb 7, 2026
Data Policy
Configurable
Region
India
Input
Text
Output
Audio
Provider Documentation

Playground

Try Bulbul v3 by Sarvam AI. Requests use the selected workspace’s credits and API pricing.

Bulbul v3Credits —
Bulbul v3
⌘ / Ctrl + Enter to send

Providers

Compare available endpoints, pricing, and context limits for Bulbul v3.

ProviderContextOutputInput PriceOutput PriceEndpoint
Sarvam AINot specifiedAudio₹2,550.00 / 1M characters—
sarvam/bulbul-v3:sarvam

Prices are catalog rates. Your workspace’s estimate and endpoint pricing determine the final charge.

Input and Output Limits

Formats and limits AudioLab enforces on each request.

LimitValue
Max chars2500
Formatswav

Performance

Status

Current catalog availability. Your workspace’s access is checked separately before a request runs.

Getting Started

Use your workspace API key and the exact model identifier below. Set the API URL to the endpoint shown in your workspace and keep credentials on your server.

API
curl "$AUDIOLAB_API_URL/v1/audio/speech" \
  -H "Authorization: Bearer $AUDIOLAB_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "sarvam/bulbul-v3",
  "input": "Make every word count.",
  "voice": "auto",
  "response_format": "wav"
}' --output speech.wav
Read the Endpoint Reference

Request Parameters

Available parameters depend on the provider and request format. The endpoint reference explains accepted values and required fields.

ParameterDetails
modelsarvam/bulbul-v3 — Required model identifier.

Input and Output Limits

Formats and limits AudioLab enforces on each request.

LimitValue
Max chars2500
Formatswav

Similar Models

Explore more text-to-speech and compare their capabilities.

ModelContextInput PriceOutput Price
Sonic 3.6CartesiaNot specified$38.25 / 1M characters—
Sonic 3.6 (2026-08-27)CartesiaNot specified$38.25 / 1M characters—
tts-rt-v2SonioxNot specified$11.985 / 1M characters—
Inworld TTS-2 FlashInworld AINot specified$12.75 / 1M characters—
audio8DeepInfraNot specified$4.25 / 1M characters—
qwen-audio-3.0-tts-flashAlibaba Cloud Model StudioNot specified$12.75 / 1M characters—
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