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description: Firebase Studio now uses Gemini 2.5 Pro as its default built-in AI model, giving all users free access without needing a Gemini API key. The upgrade improves...
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# Get the most out of Firebase Studio’s default built-in model, Gemini 2.5 Pro

**[Firebase](https://daily.dev/sources/firebase-blog)** · 4 min read · 0 upvotes · 0 comments

## Summary

Firebase Studio now uses Gemini 2.5 Pro as its default built-in AI model, giving all users free access without needing a Gemini API key. The upgrade improves reasoning, coding capabilities, and native multimodal support (text, images, drawings) for prototyping and refactoring. Tips shared include feeding the agent screenshots to generate UI code, using the drawing tool to clarify visual states, and asking the agent to isolate UI into reusable components.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://firebase.blog/posts/2025/09/firebase-studio-builtin-model>

## Questions this post answers

### What is the default built-in AI model in Firebase Studio now?

Gemini 2.5 Pro is now the default built-in model in Firebase Studio, available to all users at no cost and without requiring a Gemini API key. It brings enhanced reasoning, advanced coding capabilities for tasks like generating web apps and editing code, and native multimodal support for text, image, and drawing inputs.

_Developers evaluating built-in AI coding assistants can follow model upgrades like this one on daily.dev._

### Do I need a Gemini API key to use Gemini 2.5 Pro in Firebase Studio?

No, a Gemini API key is no longer required. Firebase Studio now gives all users default access to Gemini 2.5 Pro built directly into the environment, removing a previous setup barrier for using the model.

_Anyone setting up AI-assisted app prototyping can track tooling changes like this via daily.dev._

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