Portuguese Transcription
Convert Portuguese (Português) audio to text with AI. Fast, accurate, 10+ models.
Best Models for Portuguese
| Model | Provider | WER | Speed | |
|---|---|---|---|---|
| STT.ai Enhanced Best | STT.ai | 3.2% | Try it | |
| Whisper Large V3 | OpenAI | 4.2% | Try it | |
| Whisper Turbo | OpenAI | 5.1% | Try it | |
| SenseVoice | FunAudioLLM | 5.5% | Try it | |
| Distil-Whisper | Hugging Face | 5.8% | Try it | |
| Vosk | Alpha Cephei | 12.0% | Try it |
About Portuguese Transcription
Portuguese is spoken across four continents. STT.ai supports both Brazilian Portuguese and European Portuguese with dialect-specific accuracy.
STT.ai provides state-of-the-art Portuguese speech recognition powered by multiple AI models. Whether you need to transcribe interviews, lectures, podcasts, or meetings in Portuguese, our platform automatically detects the language and selects the optimal model for the best accuracy.
How Accurate is Portuguese Transcription?
Accuracy for Portuguese transcription depends on audio quality, speaker clarity, background noise, and the model you choose. On clean audio with a single speaker, our best models achieve a Word Error Rate (WER) under 6% for Portuguese -- approaching human-level accuracy.
For the best results with Portuguese audio, we recommend:
- Clear audio -- minimize background noise and use a good microphone
- Single speaker segments -- enable speaker diarization for multi-speaker recordings
- Choose the right model -- NVIDIA Canary offers the lowest WER for supported languages, while Whisper Large V3 provides the broadest language coverage
- Specify the language -- while auto-detect works well, manually selecting Portuguese can improve accuracy slightly
Export Formats for Portuguese Transcripts
After transcribing your Portuguese audio, download the result in any of these formats:
TXT
Plain text transcript
SRT
Subtitles with timestamps
VTT
Web video captions
DOCX
Word document
JSON
Structured data with timestamps
PDF
Print-ready document
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. Private transcript is free on all plans. 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.
STT.ai suportă 1.300+ platforme, inclusiv YouTube, Vimeo, TikTok, SoundCloud, și mai mult. Transcription URL funcționează doar cu audio și video disponibil public. Conținutul DRM-protectat (cum ar fi Spotify episoade premium, Netflix, Disney+, etc.) nu poate fi transcris. Pentru conținutul DRM, descărcați fișierul separat și încărcați-l direct.