pipecat-gnani 0.2.0

Pipecat service integration for Gnani Vachana speech AI — STT & TTS for Indian languages

pipecat-gnani

Pipecat service integration for Gnani Vachana — high-accuracy Speech-to-Text and low-latency Text-to-Speech for Indian languages.

Vachana is a production-ready speech AI platform by Gnani.ai supporting 10+ Indian languages with real-time streaming, multilingual transcription, and code-switching capabilities.

Installation

pip install pipecat-gnani

This will also install the gnani-vachana core SDK as a dependency.

Prerequisites

You need a Gnani API key. Email [e-mail] to get started — all new accounts receive free credits, no credit card required.

export GNANI_API_KEY="your-api-key"

Quick Start

Speech-to-Text (Streaming)

from pipecat_gnani import GnaniSTTService

stt = GnaniSTTService(
    api_key="your-api-key",
    settings=GnaniSTTService.Settings(
        language=Language.HI_IN,
    ),
)

Text-to-Speech (REST)

from pipecat_gnani import GnaniHttpTTSService

tts = GnaniHttpTTSService(
    api_key="your-api-key",
    aiohttp_session=session,
    settings=GnaniHttpTTSService.Settings(
        voice="sia",
        language="hi-IN",
    ),
)

Text-to-Speech (Streaming WebSocket)

from pipecat_gnani import GnaniTTSService

tts = GnaniTTSService(
    api_key="your-api-key",
    settings=GnaniTTSService.Settings(
        voice="sia",
        language="IND-IN",
    ),
)

Services

GnaniSTTService

Real-time streaming speech-to-text via WebSocket with VAD (Voice Activity Detection) support.

• Connects to wss://api.vachana.ai/stt/v3/stream
• Sends raw PCM audio in 1024-byte chunks
• Receives transcription events with segment metadata
• Supports 8 kHz and 16 kHz sample rates

GnaniHttpTTSService

REST-based text-to-speech for non-streaming use cases.

• Uses POST /api/v1/tts/inference
• Returns complete audio in a single response
• Suitable for batch synthesis

GnaniTTSService

WebSocket-based streaming text-to-speech with interruption handling.

• Connects to wss://api.vachana.ai/api/v1/tts
• Streams audio chunks in real-time
• Extends InterruptibleTTSService for proper interruption support
• Ideal for conversational voice agents

Supported Languages

Language	Code
Bengali	bn-IN
English (India)	en-IN
Gujarati	gu-IN
Hindi	hi-IN
Kannada	kn-IN
Malayalam	ml-IN
Marathi	mr-IN
Punjabi	pa-IN
Tamil	ta-IN
Telugu	te-IN

Available Voices

Voice	ID
Sia	sia
Raju	raju
Kanika	kanika
Nikita	nikita
Ravan	ravan
Simran	simran
Karan	karan
Neha	neha

Architecture

gnani-vachana      ← Core SDK (REST, WebSocket, SSE clients)
    ↑
pipecat-gnani      ← This package (Pipecat service adapter)

This package is a thin adapter that wraps the gnani-vachana SDK into Pipecat's STTService, TTSService, and InterruptibleTTSService base classes. All connection logic, authentication, and audio format handling lives in the core SDK.

Documentation

• Vachana API Docs
• Pipecat Docs
• gnani-vachana SDK

License

BSD 2-Clause — see LICENSE.