> For clean Markdown of any page, append `.md` to the page URL.
> For a complete documentation index, see https://docs.sarvam.ai/llms.txt.
> For full documentation content in one file, see https://docs.sarvam.ai/llms-full.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.sarvam.ai/_mcp/server.

## Bulbul v2 Released

Model APIs

Introduced `bulbul:v2`, the latest version of our Indian Text-to-Speech model.

* More natural and expressive voice output with better emotional tone
* Enhanced preprocessing for improved handling of mixed-language inputs

## Bulbul v1 Deprecation Notice

Model APIs

`bulbul:v1` will be officially deprecated on April 30, 2025. Users should migrate to `bulbul:v2` to ensure uninterrupted service.

## 24kHz Audio Support

Model APIs

Speech generation now supports `24kHz` sample rate for higher quality output.

## Batch ASR API Released

Model APIs

New Batch ASR API allows uploading up to 20 audio files (up to 60 minutes each).

* Ideal for calls, meetings, and long-form media
* Available in both `speech-to-text` and `speech-to-text-translate` endpoints

## Real-Time STT Speed Improvements

Model APIs

Improved transcription speed for real-time requests.

* 3× faster processing for up to 30s audio snippets
* Optimized for use cases like voice bots and instant assistants

## Streaming WebSocket (Beta)

Model APIs

WebSocket-based real-time transcription now in beta. Early access available via the Sarvam Discord community.

## Language Detection Enhancements

Model APIs

Added `source_language_code` to API responses.

* Automatically detects input language
* Improves performance on multilingual and code-switched text

## Indic Translation Upgrades

Model APIs

Improved support for two-way translation between Indic and English.

* Supports colloquial, modern, classical, and formal registers
* Ideal for education, localization, and content creation platforms

## Transliterate and Language Identification APIs

Model APIs

* **Transliterate API**\
  Converts text between writing systems while preserving pronunciation

* **Language Identification (LID) API**\
  Detects both language and script from input

## Cookbook Updated

Model APIs

* Added new real-world examples for Batch ASR and Bulbul v2 usage
* Included advanced translation flows (e.g., tone-aware translation)
* Refreshed LID and transliteration notebooks
* Integrated with latest SDK structure

## Deprecated Analytics and Parse APIs Removed from SDK

Model APIs

Removed deprecated `analytics` and `parse` APIs from SDK for better maintainability.