What to look for as AI’s influence continues to spread in the new year. Artificial intelligence certainly didn’t debut in 2025, but it was the year it really started to hit the mainstream. ChatGPT, at the start of the year, had between 300 million and 400 million average weekly users. By October, that number had doubled. Meanwhile, usage of other AI systems, including Perplexity and Google’s Gemini, saw similar leaps in usage.