I Tested 6 AI Translators on a 40-Page Research Paper — Only One Actually Worked

I tried a simple experiment: Take a 40-page academic paper and translate it using AI tools — free tier only. What I expected: ● Some limits ● Maybe slower processing ● Possibly lower quality What actually happened: ● Some tools returned only the first two paragraphs ● No error messages ● No warnings ● Just… silent truncation That’s when it became clear: Most “AI document translators” are not built to handle documents at all. One thing I didn't expect: Paying doesn't fix the architecture problem.