The 10 best AI translation tools for business are Smartling, DeepL, Google Cloud Translation, LILT, Phrase, Lokalise, ChatGPT, Microsoft Translator, Copy.ai, and Text United. The strongest combine large language models (LLMs), neural machine translation (NMT), and human review in one integrated workflow, instead of relying on a single engine. The difference shows up in results: Secret Escapes used Smartling’s AI Human Translation (AIHT) to cut translation time by 25% across all languages, with greater gains in Italian and Dutch, according to Smartling’s published case study.