Sarvam TTS

Sarvam AI provides streaming text-to-speech using the Bulbul model, with configurable speaker, pace, and language support for Indian languages.

Vision Agents uses Stream Video for real-time WebRTC transport by default. External WebRTC transports are supported as well. Most AI providers offer free tiers to get started.

Get your Sarvam API key from the Sarvam dashboard.

Sarvam also provides speech-to-text and an LLM. You can use all three in the same agent.

Installation

uv add "vision-agents[sarvam]"

Quick start

from vision_agents.core import Agent, User
from vision_agents.plugins import sarvam, getstream, smart_turn

agent = Agent(
    edge=getstream.Edge(),
    agent_user=User(name="Sarvam Agent", id="agent"),
    instructions="Reply in the same language the user speaks.",
    llm=sarvam.LLM(model="sarvam-m"),
    stt=sarvam.STT(language="hi-IN"),
    tts=sarvam.TTS(speaker="shubh"),
    turn_detection=smart_turn.TurnDetection(),
)

Set SARVAM_API_KEY in your environment or pass api_key directly.

Parameters

tts = sarvam.TTS(
    model="bulbul:v3",
    language="hi-IN",
    speaker="shubh",
    pace=1.0,
)

Name	Type	Default	Description
`model`	`str`	`"bulbul:v3"`	TTS model (`bulbul:v2`, `bulbul:v3-beta`, or `bulbul:v3`)
`language`	`str`	`"hi-IN"`	Target language code (e.g. `hi-IN`, `en-IN`)
`speaker`	`str`	`"shubh"`	Speaker voice id — must be compatible with the chosen model (see below)
`sample_rate`	`int`	`24000`	Output sample rate in Hz
`pace`	`float`	`None`	Speech pace (bulbul:v3 supports 0.5–2.0)
`pitch`	`float`	`None`	Speech pitch (bulbul:v2 only)
`loudness`	`float`	`None`	Speech loudness (bulbul:v2 only)
`temperature`	`float`	`None`	Sampling temperature (bulbul:v3 and bulbul:v3-beta only)
`enable_preprocessing`	`bool`	`True`	Normalize mixed-language and numeric text
`api_key`	`str`	`None`	API key (defaults to `SARVAM_API_KEY` env var)

Speaker compatibility

Each model supports a specific set of speakers. Passing an incompatible speaker raises a ValueError.

Model	Speakers
`bulbul:v2`	`abhilash`, `anushka`, `arya`, `hitesh`, `karun`, `manisha`, `vidya`
`bulbul:v3-beta`	`aayan`, `aditya`, `advait`, `amelia`, `amit`, `ashutosh`, `dev`, `ishita`, `kabir`, `kavya`, `manan`, `neha`, `pooja`, `priya`, `rahul`, `ratan`, `ritu`, `rohan`, `roopa`, `shubh`, `shreya`, `simran`, `sophia`, `sumit`, `varun`
`bulbul:v3`	`aayan`, `aditya`, `advait`, `amelia`, `amit`, `ashutosh`, `dev`, `ishita`, `kabir`, `kavya`, `manan`, `neha`, `pooja`, `priya`, `rahul`, `ratan`, `ritu`, `rohan`, `roopa`, `shubh`, `shreya`, `simran`, `sophia`, `sumit`, `varun`

Overview

Language Models

Realtime

Speech-to-Text

Text-to-Speech

Vision & Video

Avatars

Turn Detection

Infrastructure

Edge Transport

Telephony

Custom Integrations

Installation

Quick start

Parameters

Speaker compatibility

Next steps

Sarvam STT

Sarvam LLM

​Installation

​Quick start

​Parameters

​Speaker compatibility

​Next steps

Sarvam STT

Sarvam LLM

Installation

Quick start

Parameters

Speaker compatibility

Next steps