We pasted the same 300-word seminar outline into five AI presentation makers in October 2026 and judged the results the way audiences do: does it look finished, does it read clearly, and can you export without paying. Gamma won on the full stack, Canva won on control, and the rest earn their rows for specific situations. The ranking also covers the trap nobody warns about: AI decks that look great and export as ugly cousins of themselves. Every pick below exports what you saw, or we say so.