Gemini 4 Argon Benchmarks Hinge on High Reasoning Mode, Not Default Settings

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Google has promoted Gemini 4 Argon as its most capable model, citing leads over rival systems on many benchmarks. However, the headline scores were measured at the High reasoning setting, while the default for users is Medium. Independent testing finds Argon trailing Claude Opus 5.5 by several points in High mode, though its 15% hallucination rate stands out as the lowest among strong models. Results at default effort are promising but still preliminary. The model is available via API at introductory rates, while the agentic Antigravity coding environment is limited to Ultra subscribers.

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