Bulbul v2 Released
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
bulbul:v1 will be officially deprecated on April 30, 2025. Users should migrate to bulbul:v2 to ensure uninterrupted service.
24kHz Audio Support
Speech generation now supports 24kHz sample rate for higher quality output.
Batch ASR API Released
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-textandspeech-to-text-translateendpoints
Real-Time STT Speed Improvements
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)
WebSocket-based real-time transcription now in beta. Early access available via the Sarvam Discord community.
Language Detection Enhancements
Added source_language_code to API responses.
- Automatically detects input language
- Improves performance on multilingual and code-switched text
Indic Translation Upgrades
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
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Transliterate API
Converts text between writing systems while preserving pronunciation -
Language Identification (LID) API
Detects both language and script from input
Cookbook Updated
- 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
Removed deprecated analytics and parse APIs from SDK for better maintainability.