Speech to Text API – High-Accuracy Speech Recognition SDK
Convert pre-recorded audio files or live WebSocket streams into clean text. Engineered for high accuracy with speaker diarization, word-level timestamps, and native Hinglish code-switching across 93+ languages.
Key Takeaways & Direct Summary: Speech to Text API
Direct Answer: YourVoic Speech to Text API provides developers with real-time WebSocket audio streaming and REST endpoints to transcribe speech with sub-180ms latency and 98% neural accuracy on Cipher Max. It features automatic speaker diarization, word-level timestamps, and native Hinglish code-switching across 93+ global languages.
- Target Audience & Industry: Software engineers, AI agent developers, call center platforms, medical transcriptionists, and SaaS product teams.
- Key Capabilities: REST file upload & WebSocket live stream APIs, 93+ languages, speaker diarization, and custom domain vocabulary.
- Standards & Citations: Developed following W3C WebRTC Real-Time Audio Standards and evaluated using Google FLEURS Audio Datasets .
Try Speech to Text Transcriber Online
Upload an audio recording or click record to test real-time speech recognition.
1. Audio Input
Click to upload or drag & drop audio
MP3, WAV, M4A, FLAC (Max 25MB • Up to 2 mins audio)
2. Model & Settings
3. Transcription Result
Your transcribed text will appear here
Upload an audio file (up to 2 mins) or record live speech to transcribe speech to text.
Direct Answer: A Speech to Text API is a cloud acoustic SDK that programmatically converts raw audio into text with sub-180ms latency, 98% neural accuracy, speaker diarization, and word timestamps.
- Endpoints: REST API (`/transcribe`) and WebSocket Streaming (`/stream`).
- Key Capabilities: Multi-speaker diarization, 93+ languages, Hinglish code-switching, zero-retention privacy.
What is a Speech to Text API?
Definition: A Speech to Text API (also known as a speech recognition API or audio transcription SDK) is a cloud interface that allows software developers to programmatically send audio streams or recorded files to a neural acoustic engine and receive real-time text transcripts, speaker labels, and word timestamps in JSON format.
Speech to Text API Technical Specifications & Feature Comparison
| Feature / Specification | YourVoic Speech to Text API | Legacy Speech Recognition APIs |
|---|---|---|
| Streaming Latency | Sub-180ms real-time WebSocket frames | 800ms - 2,500ms buffering delay |
| Acoustic Model Accuracy | Up to 98% accuracy on Cipher Max neural model | 82% - 88% WER on regional accents |
| Code-Switching Support | Native Hinglish (Hindi + English) & 93+ languages | Fails on mixed-language audio streams |
| Speaker Diarization | Automated multi-speaker timestamped labels | Requires expensive add-on processing |
| API Pricing Tier | $0.002 / min (Cipher Fast) with 2,500 free credits | $0.015 - $0.030 / min with mandatory retainers |
Test the Speech to Text API Engine Live
Upload an audio file or record live microphone speech to test our speech recognition API accuracy in real time.
1. Audio Input
Click to upload or drag & drop audio
MP3, WAV, M4A, FLAC (Max 25MB • Up to 2 mins audio)
2. Model & Settings
3. Transcription Result
Your transcribed text will appear here
Upload an audio file (up to 2 mins) or record live speech to transcribe speech to text.
Next-Gen Speech Recognition Architecture
Built for mission-critical voice applications, AI agents, call centers, and content platforms.
Real-time Streaming & WebSockets
Stream live audio over WebSockets with ultra-low latency (<180ms) for real-time dictation, live captioning, and conversational AI voice bots.
Multilingual & Hinglish Code-Switching
Seamlessly transcribes mixed Hindi-English (Hinglish), Tamil, Telugu, and 93+ global languages without losing context or accuracy.
Speaker Diarization
Automatically separate multi-speaker conversations into distinct labels (Speaker 1, Speaker 2) for podcasts, calls, and meetings.
Word-Level & Segment Timestamps
Millisecond-accurate word and sentence segment timestamps for automated video subtitling (SRT/VTT) and synchronized audio playback.
Custom Domain Prompts
Guide the acoustic model with custom jargon prompts, brand names, medical terminology, and legal vocabulary for maximum domain accuracy.
Zero-Retention Privacy
Enterprise data protection. Audio streams and uploads are processed in memory and never stored or used to train public models.
Speech to Text SDK & Code Snippets
Integrate audio transcription into your codebase with ready-to-run REST and WebSocket examples.
Speech to Text API Pricing
Pay only for the exact audio minutes transcribed. No hidden fees.
| Model | Max Audio File | Latency | Diarization | Price per Audio Min |
|---|---|---|---|---|
| Cipher Fast Lowest latency acoustic model | 25MB file / Stream | ~180ms | Included | $0.002 / min |
| Cipher Max Highest precision neural model | 25MB file / Stream | ~250ms | Included | $0.004 / min |
Language Coverage & Regional Speech Recognition
Explore targeted speech-to-text models for Asia-Pacific, European, and American regional accents.
Hindi Speech to Text
Devanagari script & Hindi regional dialects
Telugu Speech to Text
Fluent Telugu audio transcription
Tamil Speech to Text
Native Tamil pronunciation transcription
Gujarati Speech to Text
Native Gujarati script audio transcription
Odia Speech to Text
Native Odia script audio transcription
Malayalam Voice Typing
Kerala phonetics & Chillaksharam support
Kannada Voice Typing
Karnataka regional dialect accuracy
Bengali Voice Typing
Bangla speech recognition
Marathi Voice Typing
Devanagari Marathi speech to text
Punjabi Voice Typing
Gurmukhi audio transcription
Urdu Voice Typing
Nasta'liq Urdu speech recognition
Assamese Speech to Text
Assamese speech recognition
Speech to Text API Frequently Asked Questions
Build with Speech to Text API Today
Get 2,500 free credits for API and 1,000 free credits for web interface on signup. Start transcribing live audio or batch files in minutes.
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