Google shuts down Gemini Nano Banana 2 + Pro preview models today June 25 — two-month-from-release deprecation reflects Google product-rationalization pattern at frontier multimodal layer
The gemini-3.1-flash-image-preview and gemini-3-pro-image-preview models are being deprecated and shut down today (June 25). The two-month-from-release deprecation reflects Google's product-rationalization pattern at the frontier multimodal layer. Customers using the preview-tier models must migrate to alternative offerings before the shutdown.
The substantive piece is the preview-tier deprecation pattern Google is operating. Pre-Nano-Banana-deprecation the Google Gemini API preview models served as testing-tier offerings ahead of GA. The two-month deprecation cycle from release establishes that Google preview-tier offerings have substantively short operational windows — customers planning around preview-tier models face structural migration pressure on rapid timelines.
The competitive read for H2 2026 multimodal procurement is that Google's preview-tier deprecation pattern affects multi-vendor procurement-architecture decisions. Combined with Gemini 3.5 Pro's third GA slippage, Google's frontier-model product-stability concerns compound. Vendor selection should weight Google product-stability against competitive vendors that maintain longer preview-tier operational windows.
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