# Google Antigravity Just Killed Every AI Coding Tools (gemini 3 pro) Source: https://www.youtube.com/watch?v=MSaCEfACW7A Recap page: https://rapidrecap.app/video/MSaCEfACW7A Generated: 2025-11-19T15:36:09.738+00:00 --- ## Quick Overview Gemini 3 Pro (High) fundamentally outperforms other LLMs like GPT-4 in coding tasks, with the presenter guaranteeing its superiority in long-term application building due to its ability to follow complex plans and avoid self-correction issues seen in competing models, despite Google's Antigravity extension initially causing browser tab confusion. **Key Points:** - Gemini 3 Pro (High) is declared superior to GPT-4 and Claude Sonnet 4.5 for coding tasks, especially in complex, long-term application development. - The presenter demonstrated Gemini 3 Pro's planning capability by successfully executing a complex task involving application navigation and component addition without intervention. - The presenter notes that while the Antigravity extension initially caused browser tabs to open incorrectly, the underlying AI model performance is excellent. - The presenter previously stated three weeks ago that Gemini 3 Pro was excellent, but others initially dismissed the claim. - The presenter prefers Gemini 3 Pro (High) over the low version and Claude Sonnet 4.5 due to its superior ability to identify and solve real bugs accurately. - The Antigravity extension, which enables AI agents to interact with the browser, requires the extension to be enabled for the AI to function correctly within the IDE environment. ![Screenshot at 00:11: The presenter directs attention to the AI agent workflow within the IDE, showing the agent using the 'Gemini 3 Pro \(High\)' model to analyze the current application and plan out the steps for adding a new component, illustrating the AI's ability to use planning mode for complex tasks.](https://ss.rapidrecap.app/screens/MSaCEfACW7A/00-00-11.png) **Context:** The video features a developer benchmarking and comparing the performance of various Large Language Models (LLMs) available through an AI Agent management platform, specifically focusing on their proficiency in handling complex coding tasks within an Integrated Development Environment (IDE). The key comparison is between Google's newly available Gemini 3 Pro (High) and established models like GPT-4 and Claude Sonnet 4.5, utilizing the Antigravity browser extension to facilitate the AI's interaction with the local application. ## Detailed Analysis The presenter conducts a comparison test between several large language models, focusing heavily on Gemini 3 Pro (High) for coding assistance. He begins by showing a recording of the agent executing a task on a landing page, confirming that the agent successfully navigated to localhost:3000 and planned out the addition of a new component. The presenter highlights that the 'Planning' conversation mode is crucial for complex tasks, unlike the 'Fast' mode. A major finding is that Gemini 3 Pro (High) is significantly better at complex coding than its predecessors (like Gemini 3 Pro Low) and competitors (like Claude Sonnet 4.5 and GPT-4 Codex), often succeeding in one shot where others fail or require extensive manual correction. He points out that Gemini 3 Pro (High) is capable of identifying real bugs and following complex, multi-step plans without falling into the self-correcting loops that plague other models. The presenter also mentions a minor initial issue where the Antigravity extension caused new browser tabs to open instead of working within the existing tab, but stresses that this does not reflect on the model's core capability. He concludes by stating that, in the long term, Gemini 3 Pro is poised to win the AI coding race due to its superior output quality and planning abilities. ### LLM Performance Comparison - Gemini 3 Pro (High) is superior for coding - Outperforms GPT-4 and Claude 4.5 in complex planning - Works reliably when given a plan, unlike other models that require micromanagement ### Antigravity Extension Demo - Agent successfully navigates to localhost:3000 - Agent analyzes project structure and plans task execution - Demonstrates the need for the browser extension to interact with the IDE environment ### Model Selection and Preference - Gemini 3 Pro (High) is preferred over Low version and Claude 4.5 - Previous claims about Gemini 3's capability were dismissed by others three weeks prior - The presenter guarantees Gemini 3 Pro's long-term viability in application development ![Screenshot at 00:04: The video opens showing the developer environment with the thumio.com project structure and the agent panel open, setting the context for an AI coding demonstration.](https://ss.rapidrecap.app/screens/MSaCEfACW7A/00-00-04.png) ![Screenshot at 00:11: The agent prompt shows a task request: 'navigate to localhost:3000 look at my entire page and then add a new componenet that would fit well,' with Gemini 3 Pro \(High\) selected as the model.](https://ss.rapidrecap.app/screens/MSaCEfACW7A/00-00-11.png) ![Screenshot at 00:23: The developer welcomes viewers and introduces the comparison topic, setting the stage for benchmarking different AI models.](https://ss.rapidrecap.app/screens/MSaCEfACW7A/00-00-23.png) ![Screenshot at 00:47: The presenter lists the key comparison points, starting with the new Gemini 3 Pro model and its massive capabilities.](https://ss.rapidrecap.app/screens/MSaCEfACW7A/00-00-47.png) ![Screenshot at 01:19: A close-up view of the model selection dropdown menu within the agent interface, showing options like Gemini 3 Pro \(High\), Claude Sonnet 4.5, and GPT-OSS Codex.](https://ss.rapidrecap.app/screens/MSaCEfACW7A/00-01-19.png) ![Screenshot at 01:34: A recording of the thumio.com landing page is shown, illustrating the application the AI agent is tasked to analyze and modify.](https://ss.rapidrecap.app/screens/MSaCEfACW7A/00-01-34.png) ![Screenshot at 02:23: The agent is shown analyzing the application structure, with progress updates visible in the task panel.](https://ss.rapidrecap.app/screens/MSaCEfACW7A/00-02-23.png) ![Screenshot at 03:33: The developer navigates to the settings menu within the application interface to show the available models list, highlighting Gemini 3 Pro.](https://ss.rapidrecap.app/screens/MSaCEfACW7A/00-03-33.png) ![Screenshot at 04:47: The presenter discusses the superior performance of Gemini 3 Pro, comparing it to a 'Pitbull on Rabies' in terms of effectiveness for debugging.](https://ss.rapidrecap.app/screens/MSaCEfACW7A/00-04-47.png) ![Screenshot at 07:41: The video cuts to the Chrome Web Store page for the 'Antigravity Browser Extension,' which the presenter identifies as necessary for the AI's browser interaction capabilities.](https://ss.rapidrecap.app/screens/MSaCEfACW7A/00-07-41.png)