Detector de IA is a Spanish-language AI text detector, and the site itself is in Spanish. You paste text, press Analizar and get a probability estimate of whether it was AI-written. It looks for patterns associated with ChatGPT, Claude, Gemini and Copilot, and handles essays, articles, SEO content and emails.
The page says Gratis, Sin registro, Resultado instantaneo, and it runs in the browser. No plans or prices are shown, though the page mentions free features being available, so paid features may exist. The result is an estimate, not proof, and the site acknowledges that false positives and false negatives can happen.
Detector de IA exists to let people check Spanish text for patterns associated with AI-generated writing.