Speech-to-Text APIs | Sarvam API Docs

Sarvam AI offers two powerful speech models:

High accuracy ASR model that transcribes Indian language speech directly into the same spoken language across diverse audio conditions.

Saaras

High accuracy ASR model that auto-detects the input language and delivers precise English-translated transcripts for Indian speech.

API Types

Real-time API

Synchronous processing for files under 30 seconds.

Batch API

Asynchronous processing for files up to 1 hour.

Streaming API

Real-time audio streaming with instant results.

Supported Audio Formats & MIME Types

The STT and STTT APIs support over 10 major audio formats and MIME type variants. Supported formats and MIME types are listed below:

Format Group	Supported MIME Types
MP3 Variants	`mpeg`, `mp3`, `mpeg3`, `x-mpeg-3`, `x-mp3`
WAV Variants	`wav`, `x-wav`, `wave`
AAC Variants	`aac`, `x-aac`
AIFF Variants	`aiff`, `x-aiff`
OGG / Opus Formats	`ogg`, `opus`
FLAC Variants (Lossless)	`flac`, `x-flac`
MP4 / M4A Audio	`mp4`, `x-m4a`
AMR (Narrowband)	`amr`
WMA (Windows Media Audio)	`x-ms-wma`
WEBM (Audio & Video)	`webm`, `webm`
PCM Formats	`pcm_s16le`, `pcm_l16`, `pcm_raw`

For most audio formats, our API automatically detects the codec. However, when using PCM formats (pcm_s16le, pcm_l16, pcm_raw), you must explicitly specify the input_audio_codec parameter. PCM files are only supported at 16kHz sample rate.

Technical Capabilities

Language Support

10+ Indian languages and English
Automatic language detection
Code-mixing support
Multi-speaker handling

Advanced Processing

Speaker diarization (Batch API)
Timestamp generation
Entity preservation
Telephony optimization

Next Steps

Choose Your API

Select the appropriate API type based on your use case.

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Go Live

Deploy your integration and monitor usage in the dashboard.

Need help choosing the right API? Contact us on discord for guidance.