Gemini 3 Flash: What’s New in the Gemini App
Gemini 3 Flash: What’s New in the Gemini App
Gemini
Dec 17, 2025


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Gemini 3 Flash is the new default model in the Gemini app, bringing faster responses, stronger reasoning and richer multimodal understanding. Choose Fast for speed or Thinking for complex tasks, while Pro remains available for advanced maths and coding—making everyday prompts quicker and more useful.
Key benefits
Faster, smarter replies: Lower latency with improved reasoning.
Multimodal by default: Use text, images, audio or video for richer context.
Simple model picker: Fast for speed, Thinking for tougher prompts; Pro still available.
What’s new or how it works
Gemini 3 Flash blends Pro-level reasoning with Flash-level speed. In practice, plans, summaries and code hints arrive faster while the model tracks more context and handles richer media. In the app, the model picker exposes Fast and Thinking so you can trade speed for depth as needed.
Practical steps or examples
Pick the right mode: Use Fast for quick chats; switch to Thinking for step-by-step reasoning.
Try multimodal inputs: Attach images or short video to add context.
Privacy tip: Start a Temporary chat when you want a clean slate that isn’t saved to activity.
FAQs
What is Gemini 3 Flash?
The newest default model in the Gemini app—faster responses, stronger reasoning and better multimodal understanding.
How does the update affect current users?
You’ll see Fast and Thinking options with snappier replies and better results on complex prompts; Pro remains selectable.
Are there any costs associated with the update?
The app update is free; some advanced features or higher limits may require a paid Google AI plan (Gemini Advanced).
Summary
Gemini 3 Flash makes the Gemini app feel quicker and more capable—especially when you mix text with images or video. Pick Fast for speed, Thinking for tougher problems, and only upgrade if you need Pro-level limits or features.
Gemini 3 Flash is the new default model in the Gemini app, bringing faster responses, stronger reasoning and richer multimodal understanding. Choose Fast for speed or Thinking for complex tasks, while Pro remains available for advanced maths and coding—making everyday prompts quicker and more useful.
Key benefits
Faster, smarter replies: Lower latency with improved reasoning.
Multimodal by default: Use text, images, audio or video for richer context.
Simple model picker: Fast for speed, Thinking for tougher prompts; Pro still available.
What’s new or how it works
Gemini 3 Flash blends Pro-level reasoning with Flash-level speed. In practice, plans, summaries and code hints arrive faster while the model tracks more context and handles richer media. In the app, the model picker exposes Fast and Thinking so you can trade speed for depth as needed.
Practical steps or examples
Pick the right mode: Use Fast for quick chats; switch to Thinking for step-by-step reasoning.
Try multimodal inputs: Attach images or short video to add context.
Privacy tip: Start a Temporary chat when you want a clean slate that isn’t saved to activity.
FAQs
What is Gemini 3 Flash?
The newest default model in the Gemini app—faster responses, stronger reasoning and better multimodal understanding.
How does the update affect current users?
You’ll see Fast and Thinking options with snappier replies and better results on complex prompts; Pro remains selectable.
Are there any costs associated with the update?
The app update is free; some advanced features or higher limits may require a paid Google AI plan (Gemini Advanced).
Summary
Gemini 3 Flash makes the Gemini app feel quicker and more capable—especially when you mix text with images or video. Pick Fast for speed, Thinking for tougher problems, and only upgrade if you need Pro-level limits or features.
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