SEOnautik helps businesses and agencies in Germany, Austria and Switzerland check whether AI systems mention them. Paid reports query ChatGPT, Claude, Perplexity and Gemini through official APIs with web search, combine the findings with technical website checks and provide prioritized actions as a web report and PDF. A free quick check works without an account. One-time reports start at €29 for SEO or €59 including AI visibility measurements. Website and reports are in German.