The search engine industry has long been dominated by Google, with its parent company Alphabet (GOOGL) commanding nearly 90% of global search traffic. However, recent developments suggest that this dominance may be under threat.

Shares of Google parent Alphabet tumbled Wednesday after its key partner Apple indicated Google’s days of search engine dominance on Apple devices may be numbered, causing Google stock to limp toward one of its largest losses ever,

Shares of Alphabet ( GOOGL 3.00%) ( GOOG 2.91%) sank after Apple executive Eddy Cue said that searches on Safari declined for the first time ever in April. Cue attributed the decline to people using more artificial intelligence (AI) chatbots and predicted that AI search engines will eventually replace traditional search.