Herramienta de transcripción en línea gratuita
Sube un archivo, graba con tu micrófono o pega una URL. La IA transcribe en segundos.
100+ idiomas
Detección automática o selección manual. Todos los idiomas principales compatibles.
Detección de hablantes
Identifica automáticamente quién dijo qué.
Cifrado del lado del cliente
Cifra las transcripciones en tu navegador. Ni siquiera nosotros podemos leerlas.
6 formatos de exportación
TXT, SRT, VTT, DOCX, JSON, PDF.
Formatos de audio y video compatibles
Sube archivos de hasta 2GB. También soportamos más de 1,300 plataformas — solo pega la URL. Ver todas las plataformas →
Funciona con audio y vídeo de acceso público. El contenido protegido por DRM no es compatible.
Cómo funciona
1
Sube o graba
Sube un archivo de audio/video, pega una URL de YouTube o cualquier plataforma, o graba con tu micrófono.
2
La IA transcribe
Elige entre múltiples modelos de IA. Detección automática de idioma. La diarización identifica quién dijo qué.
3
Exporta y comparte
Descarga como TXT, SRT, VTT, DOCX, JSON o PDF. Comparte con un enlace. Mejora con IA para mayor precisión.
Preguntas frecuentes
transcription runs in your browser: paste a URL, upload a file, or record from your mic. STT.ai picks the AI model and returns the transcript in under 5 minutes. Export as TXT, SRT, VTT, DOCX, JSON, or PDF.
Yes — every visitor gets 600 free minutes/month on STT.ai, usable for transcription the same as any other workflow. Paid plans starting at $5/month unlock longer files, private transcripts, and priority queueing.
transcription runs on the same AI models as the rest of STT.ai — our best models reach 95-97% accuracy on clean speech (3-5% Word Error Rate on benchmarks). Switch models on the fly if the first pass is below your target.
transcription can run on any of STT.ai's 10+ models — STT.ai Enhanced (most accurate), Whisper Large V3 (99 languages), NVIDIA Canary (#1 WER on supported langs), Whisper Turbo (fast), Moonshine (lightweight), and more.
Yes. Every transcript exports as SRT or VTT — works with YouTube, Vimeo, TikTok, VLC, and every major video player. The burn-subtitles tool overlays them onto video as hardsubs.
Yes. Speaker diarization automatically labels each voice (Speaker 1, Speaker 2, ...) and you can rename them in the built-in editor. Works across all models and languages.
Most transcription jobs finish in under 5 minutes. A 1-hour audio file typically completes in 2-3 minutes with our fastest models. Speed depends on chosen model and current GPU load.
transcription accepts 20+ formats — MP3, WAV, M4A, FLAC, OGG, MP4, MKV, MOV, WebM, AVI, and more. Output to TXT, SRT, VTT, DOCX, JSON, or PDF.
Yes. Audio files submitted to transcription are processed and deleted by default. Pro plans add client-side encryption — even if STT.ai's database is breached, your transcripts are unreadable without your key. Data is never used for model training without explicit opt-in.
Yes. STT.ai offers a REST API with Python and Node.js SDKs, plus an MCP server for Claude and Cursor — all usable for transcription workflows. Free API tier includes 100 minutes/month.
Yes. Every transcript opens in the built-in editor where you can correct words, rename speakers, adjust timestamps, and add notes. All changes save automatically.
Every transcript gets a unique shareable URL. Export to DOCX or PDF for email. Pro plans add password-protected and permanent links — useful for client work.
STT.ai handles 1,300+ platforms including YouTube, Vimeo, TikTok, SoundCloud, Zoom, Google Meet, podcast hosts, and more. URL transcription works with publicly-available content only — DRM-protected sources can't be transcribed.