FreeSubtitles.Ai is a free online speech recognition and machine translation tool. Users can upload audio or video files, and it will automatically transcribe the text and provide multilingual translations. The product offers both free and paid versions. The free version has certain usage limitations. The paid version can enjoy larger file sizes, longer durations, and higher accuracy transcription services. Main functions include speech to text, video subtitle extraction, and multilingual translation. Suitable for learning foreign languages, processing meeting minutes, and generating subtitles. Features include being free, convenient, and high accuracy.