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Migrating from Gemini 3.8 Flash to Hydrogen and Decisions API

The promo period for Gemini 4 Carbon ends on November 30, 2026. The discount on Gemini 3.8 Flash expires on December 31. Passing the old thinking budget parameter now breaks production with an HTTP 400 error. Developers need to update their agent architecture and avoid doubling their budget. A stac…

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  1. 2026-11-13 11:45 · DEV Community — AI
    Migrating from Gemini 3.8 Flash to Hydrogen and Decisions API

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