Google rolls out Gemini 4 Hydrogen model to Search, adds Carbon to Gemini app
Google announced that its Gemini 4 Hydrogen model now powers Search, delivering quicker responses, better handling of complex queries and richer visual results. Earlier, the company said Hydrogen had been made live for all Search users worldwide, replacing the Flash 3. 8 version and adding visual capabilities.
Google also added the Gemini 4 Carbon model to the Gemini app for AI Ultra subscribers while keeping the Argon model for most software-engineering tasks. Independent testing reported that Carbon cut false-claim rates from 36% to 18%, though its coding speed and cost remained behind Anthropic's Opus.