Leaked IDE menus reveal unreleased Gemini 4 Hydrogen, Argon, Carbon and Claude Opus 5.5
Afraid-Tangelo-7414 · reddit · 2026-11-13
Reddit users spotted unreleased models in IDE model pickers: Gemini 4 Hydrogen Medium, Gemini 4 Argon Medium, Claude Opus 5.5 and Sonnet 5.5 Medium (all tagged New), plus a disabled Gemini 4 Carbon. Mobile Gemini app screenshots show 4 Hydrogen slotted as the "Everyday help" tier and 4 Argon for "Code & analysis". Several users report the options briefly appearing then vanishing, suggesting a staged rollout config leak revealing Gemini 4's element-named model lineup.
Related event: Gemini 4 Hydrogen surfaces across Google products ahead of launch(27 posts)→
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