TheSubAI is described as 'Browser-based AI subtitle translator for people who work with subtitle files rather than video timelines. Upload an SRT, VTT, ASS, SSA, SBV or TTML file, choose one of 130+ target languages, and get back the same file with translated text and byte-identical timing' and is a Translator in the education & reference category. There are more than 10 alternatives to TheSubAI, not only websites but also apps for a variety of platforms, including Self-Hosted, Python, Docker and Mac apps. The best TheSubAI alternative is GPT Subtitler. It's not free, so if you're looking for a free alternative, you could try GPT Subtitler or Lingarr. Other great sites and apps similar to TheSubAI are Akbar - Subtitles Translator, SRT Translator, Translate-subtitles.com and Subtitles Translator.