The article argues that by 2026, multi-modal AI will become mainstream, combining various inputs like text, voice, and visual data. It highlights advancements in AI technologies, decreasing costs, and increasing capabilities that allow machines to understand the world in ways similar to humans. The author believes that this shift will transform how AI interacts with users beyond traditional text interfaces.

The content of the provided URL appears to be corrupted or unreadable, making it impossible to extract any meaningful information or insights regarding the state of product development in 2026. Therefore, no summary can be provided based on the current text.