Home SEO Google Makes Gemini 4 Hydrogen The Default Model In AI Mode via @sejournal, @MattGSouthern Google Makes Gemini 4 Hydrogen The Default Model In AI Mode via @sejournal, @MattGSouthern Andrew M Nov 13, 2026 comments off Tweet on Twitter Share on Facebook Google+ Pinterest Google made Gemini 4 Hydrogen the default model in AI Mode worldwide and is using it for the hardest AI Overview questions. The post Google Makes Gemini 4 Hydrogen The Default Model In AI Mode appeared first on Search Engine Journal. artificial intelligence Gemini Google Search Engine search engines