Let’s dive into everything you need to know to build, compete, and succeed with Google’s Gemini Nano and Chrome’s built-in AI APIs to compete in Google’s Chrome AI Challenge 2025.
Table of Contents
Introduction
The domain of web development is rapidly changing. AI has grown into more than just a backend or cloud-based phenomenon as it becomes increasingly powerful and smaller. What if your browser could instantly, securely, as well as offline run powerful AI models on your device? Through its Chrome Built-in AI initiative, the search giant Google is promoting exactly that.
In an attempt to accelerate this evolution, Google announced the Google Chrome Built-in AI Challenge, requiring on developers worldwide to look at the potential of web apps and browser extensions by leveraging integrated AI APIs like Gemini Nano. This is an opportunity to make a contribution to the forthcoming wave of intelligent web tools, irrespective of your level of experience as an AI engineer or your level of passion as a novice.
What is the Built-in Chrome AI Challenge
- A public online hackathon called “Google Chrome Built-in AI Challenge 2025: Innovate with Intelligence — Build the Future of the Web with Gemini Nano and Chrome AI.”
- Deadline: October 31, 2025, 11:45pm PDT.
- Around 303 participants currently. Prize pool of US$70,000 in cash.
Who Can Participate
Anyone above the age of majority in their country (legal adult), except in some excluded countries/territories.
What’s the Challenge / What to Build
Participants are asked to build a new web application or Chrome Extension that uses built-in AI features in Chrome – particularly client-side AI (so things run locally). No one is allowed to reuse last year’s ideas.
- Prompt API (with multimodal support — image & audio input)
- Proofreader, Summarizer, Translator, Writer, Rewriter APIs
- You can use Firebase AI Logic or the Gemini Developer API for hybrid (client + fallback) architectures
Requirements & Submission Guidelines
Your entry must be original new web application or Chrome extension by using built-in AI APIs like Gemini Nano or others. Here it must be noted that you cannot reuse the same idea/project from last year’s hackathon.
- You should share your application through public GitHub repo with open source license and proper instructions. Also you must include a text description of your project, which APIs used and what problem being solved.
- You should share a public link of Youtube or Vimeo video (≤ 3 minutes) showing the application in action.
What are the Judging Criteria
Due to the addition of multimodal input (image/audio), this year there are room for more creative UI/UX ideas. The hybrid models allow to reach more users, especially on mobile or in low-conncectivity settings. That’s why all submissions will be judged on the following criteria:
- Functionality (scalability, effective use of APIs)
- Purpose (solving a meaningful user problem or unlocking something new)
- Content (creativity, visual quality)
- User Experience (ease of use, clarity)
- Technical execution (how well the AI APIs are integrated)
Why This Year is a Big Opportunity
This year in Chrome AI Challenge 2025, there is a total prize pool of US$70,000 across 16 prizes that is ranging from $200 up to $14,000. So larger prizeMajor categories include:
- Most Helpful (Chrome Extension) – $14,000
- Best Multimodal AI App – $9,000
- Best Hybrid AI App – $9,000 each for web and extension versions
- Web Application & Chrome Extension categories separately
Also, the winners can get exposure via Google’s channels and connect with the Chrome AI team.
Why Join / Benefits
While concluding, I just iterate that Chrome’s AI Challenge 2025 isn’t just about competing, it’s about shaping AI how it looks like on the web. So whatever you want to try it as experimental or handle real problems like translation, writing, etc., your moment is now to build. I would be happy to know about your suggestions, ideas and how Chrome’s AI Challenge 2025 is going to construct your future. Best wishes!
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This article is super informative and exciting! The Chrome AI Challenge sounds like a fantastic opportunity for developers to innovate and make a real impact. Cant wait to see the creative projects!speed stars thời gian thực