What Gemini 3 Flash introduced
Google's December 2025 release paired faster responses with reasoning capabilities across its app and developer tools.
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Google introduced Gemini 3 Flash in December 2025 as a model focused on response speed and cost alongside reasoning capability. At launch, Google made it the default in the Gemini app, replacing Gemini 2.5 Flash, and offered a preview through developer and enterprise products. [1]
Read the comparisons with their conditions
The announcement included benchmark results and comparisons with earlier Gemini models. These are Google's reported evaluations. They do not mean every prompt will run faster or produce a better answer, and the launch availability should not be read as a permanent list of supported products. [1]
Try the work you actually need
Build a small comparison set from your own tasks: a code review, a document question and a structured output request. Keep the input identical across models and note both response time and the corrections required.
For an application, also check the current model identifier, limits and pricing before deployment. A faster answer is useful when it still satisfies the task and can be checked.
Keep this guide
Filed under AI agents
Sources
- Google Gemini 3 Flash announcementblog.google
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