Công cụ chuyển đổi trực tuyến miễn phí
Tải tệp lên, ghi âm hoặc dán URL. AI chuyển đổi trong vài giây.
100+ ngôn ngữ
Tự động nhận diện hoặc chọn. Hỗ trợ mọi ngôn ngữ chính.
Nhận diện người nói
Tự động xác định ai nói gì.
Mã hóa phía máy khách
Mã hóa bản ghi ngay trên trình duyệt. Ngay cả chúng tôi cũng không đọc được.
6 định dạng xuất
TXT, SRT, VTT, DOCX, JSON, PDF.
Cách hoạt động
1
Tải lên hoặc ghi âm
Tải tệp âm thanh/video, dán URL hoặc ghi âm từ micro.
2
AI chuyển đổi
Chọn từ nhiều mô hình AI. Tự động nhận diện ngôn ngữ và người nói.
3
Xuất & chia sẻ
Tải xuống dưới dạng TXT, SRT, VTT, DOCX, JSON hoặc PDF. Chia sẻ bằng liên kết.
Câu hỏi thường gặp
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.