Cygnus is an AI assistant for professionals, not just chat. It researches from real sources, reasons across 14 fields (law, medicine, engineering, science, economics…), and produces ready-to-use documents — Word, PowerPoint, Excel, PDF. Free to start; White Swan (fast) & Black Swan (deepest reasoning) paid tiers; OpenAI-compatible API; and a marketplace of verified professionals. Frontier-class quality at a fraction of the price.