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Gemini API Changelog: February 19, 2026

Source: Gemini API Changelog

Released Gemini 3.1 Pro Preview, our latest iteration in the new Gemini 3 series family. Launched a separate endpoint gemini-3.1-pro-preview-customtools, which is better at prioritizing custom tools, for users building with a mix of bash and tools.

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Rated low: routine. Worth knowing, not worth rearranging your day for.

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Source
Gemini API Changelog (ai.google.dev)
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Google · Official · Developer
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Released Gemini 3.1 Pro Preview, our latest iteration in the new Gemini 3 series family. Launched a separate endpoint gemini-3.1-pro-preview-customtools,…

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