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Gemini 3.5 Flash: more expensive, but Google plan to use it for everything

Today at Google I/O, Google released Gemini 3.5 Flash . This one skipped the -preview modifier and went straight to general availability, and Google appear to be using it for a whole lot of their key products: 3.5 Flash is available today to billions of people globally: For everyone via the Gemini app and AI Mode in Google Search For developers in our agent-first development platform Google Antigravity and Gemini API in Google AI Studio and Android Studio For enterprises in Gemini Enterprise Agent Platform and Gemini Enterprise. As usual with Gemini, the most interesting details are tucked away in the What's new in Gemini 3.5 Flash developer documentation. It mostly has the same set of platform features as the previous Gemini 3.x series, albeit with no computer use . The model ID is gemini-3.5-flash . The knowledge cut-off is January 2025, and it supports 1,048,576 input tokens and 65,536 maximum output tokens. Google are also pushing a new Interactions API , currently in beta, which looks to me like their version of the patterns introduced by OpenAI Responses - in particular server-side history management. The price has gone up Gemini 3.5 Flash is accompanied by a notable price bump. The previous models in the "Flash" family were Gemini 3 Flash Preview and Gemini 3.1 Flash-Lite . The new 3.5 Flash is 3x the price of 3 Flash Preview and 6x the price of 3.1 Flash-Lite (see price comparison here ). At $1.50/million input and $9/million output it's getting close in price to Goog