Free AI Speech to Text

Transcribe audio & video to text in 100+ languages. 10+ AI models. Speaker detection. No signup required.

18
transcriptions
16
minutes transcribed
100+
languages
70+
free tools
Private transcript Pro
May take a few minutes for longer files
Drop file here or click to browse
MP3, WAV, M4A, FLAC, MP4, MKV, MOV, WebM — up to 2GB
Private transcript Pro
Recording: 0:00
Real-time Vosk (instant)
Enhanced Whisper (accurate)
Public links: 24h, text only · Sign up for 7d + audio · Pro for private links

Real-time speech to text. AI auto-corrects as you speak — accuracy improves with longer speech.

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10 free min/day 600 min free with signup No credit card Encrypted
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Speech to Text Audio to Text Video to Text Live Transcription Dictation Subtitles Meetings All Tools →
Speaker Detection
Auto-identify who said what
100+ Languages
Auto-detect or select manually
Choose Your Model
Whisper, Canary, Parakeet & more
Export Anything
TXT, SRT, VTT, DOCX, JSON, PDF
Client-Side Encrypted Storage — Your transcripts are encrypted in your browser. Even we can't read them. Learn how it works →

Trusted by professionals worldwide

Podcasters Journalists Researchers Students Legal Teams Medical Pros

Speech to Text Models

Choose the best engine for your audio

View all models →
OUR MODEL
STT.ai Enhanced
STT.ai
3.2% WER 100 langs
Whisper Large V3
OpenAI
4.2% WER 99 langs
Whisper Turbo
OpenAI
5.1% WER 99 langs
NVIDIA Canary
NVIDIA
3.5% WER 4 langs
NVIDIA Parakeet
NVIDIA
3.0% WER 1 langs

How STT.ai Works

Three steps to accurate transcription

1. Upload, Record, or Paste URL

Drag and drop any audio or video file (MP3, WAV, MP4, and 20+ formats). Record from your microphone in real-time. Or paste a link from YouTube, Vimeo, TikTok, and 1,300+ platforms.

2. AI Transcribes with Your Choice of Model

Choose from 10+ AI models including Whisper, NVIDIA Canary (#1 accuracy), and Moonshine. Auto-detect language from 100+ options. Speaker diarization identifies who said what.

3. Export, Share, or Integrate

Download as TXT, SRT, VTT, DOCX, JSON, or PDF. Share via link. Use our API to integrate transcription into your app. Perfect for subtitles, meeting notes, podcasts, and more.

Popular Use Cases

All use cases →
Meetings
Meeting notes & action items
Podcasts
Transcripts & show notes
Subtitles
SRT, VTT & more
Medical
Secure transcription
Lectures
Class notes & study guides
Legal
Depositions & court
100+
Languages Supported
70+
Free Tools
1,300+
Platforms Supported
7
Export Formats

Switching from another speech to text service?

STT.ai vs Otter.ai STT.ai vs TurboScribe STT.ai vs Fireflies STT.ai vs Rev Compare all →

Supported Languages

All 100+ languages →
English Spanish French German Japanese Chinese Arabic Hindi Portuguese Russian Korean Italian Turkish Dutch Polish +85 more

Ready to transcribe?

Upload your first file free. No credit card, no signup. 600 minutes per month on the free plan.

Start Transcribing

Frequently Asked Questions

Upload your audio or video file to STT.ai. Select your preferred AI model and options, then click Transcribe. Your transcript will be ready in minutes. Export as TXT, SRT, VTT, DOCX, JSON, or PDF.

Yes! STT.ai offers 600 free minutes per month for all users. No signup required for your first transcription. Paid plans with more minutes and features start at $5/month.

Accuracy depends on the AI model you choose and audio quality. Our best models achieve a 5-7% Word Error Rate on benchmarks, meaning 93-95%+ accuracy. Clear audio with minimal background noise produces the best results.

STT.ai offers 10+ models including Whisper Large V3, NVIDIA Canary, and more. You can compare results from different models on the same file.

Yes. After transcribing, export your transcript as SRT or VTT subtitle files. These work with YouTube, Vimeo, and all major video platforms.

Yes. STT.ai automatically identifies and labels different speakers using AI speaker diarization. Works across all models and languages.

Most files are transcribed in under 5 minutes. A 1-hour audio file typically takes 2-3 minutes with our fastest models.

STT.ai supports 20+ audio and video formats including MP3, WAV, M4A, FLAC, OGG, MP4, MKV, MOV, WebM, and AVI. Export as TXT, SRT, VTT, DOCX, JSON, or PDF.

Yes. Audio files are processed and deleted after transcription. Your data is never used for training. Client-side encryption is free on all plans — it encrypts stored transcripts with a key only you have. During processing, the server handles your audio in plaintext. Learn about our security.

Yes. STT.ai offers a REST API with Python and Node.js SDKs. Free tier includes 100 minutes/month.

Yes. STT.ai includes a built-in transcript editor where you can correct errors, rename speakers, and adjust timestamps.

Every transcript gets a unique shareable link. Export to DOCX or PDF for email. Pro plans offer password-protected and permanent links.