GPT Plus - ChatGPT Plus/Pro Top-up Service

2026 Google I/O Latest Release | How to Use gemini3.5flash? 5 Quick Access Channels and Essential Pitfall-Avoidance Guide

5/20/2026 how-to-use-gemini3.5flashGemini-3.5-Flash-mainland-experienceGoogle-I-O-2026-latest-modelAntigravity-IDE-upgrade-tutorialGoogle-AI-Studio-free-direct-accessGemini-direct-accessLLM-APIAI-development-pitfalls

🚀 Google I/O just dropped a new generation of large models, and everyone is searching for how to use gemini3.5flash? To help you get hands-on with this lightning-fast model as soon as possible, this article compiles the current newest and most complete 5 ways to use it, along with a detailed "pitfall-avoidance guide" to help you quickly clear the hurdles and smoothly experience the power of Gemini 3.5 Flash!

# 📑 Table of Contents (Click to Jump)

Method 1: Upgrade Antigravity IDE to 2.0

69

This is currently the easiest way for developers to try it. If you're already using Antigravity, just open the client, upgrade to the latest 2.0 version, then switch directly to Gemini 3.5 Flash in the model selection menu.

⚠️ Upgrade Pitfall-Avoidance Guide:

  • 🚨 Pitfall 1: The Google account may fail to log in Some users found they couldn't log into their Google account after upgrading. For now it appears to be caused by cache or regional IP fluctuations. Solution: Try fully logging out and back in, or switch to a cleaner global network environment.

  • 🚨 Pitfall 2: The IDE was split out as a separate app Antigravity 2.0 separates the IDE from the main client, turning it into a standalone app. If you upgraded the main client and found the IDE "missing", it's because the new app isn't installed locally — you need to download it separately. 70

  • Download address: https://antigravity.google/download#antigravity-ide (opens new window)

Method 2: Use Antigravity CLI

For programmers who prefer working in the terminal, using the CLI is the more convenient way. Essentially, it upgrades the original Gemini CLI to the Antigravity CLI; once installed, just launch it with the agy command.

⚠️ Prerequisite note: Before using the CLI, you must first complete login verification with an Antigravity account or Antigravity IDE, otherwise the CLI won't run properly.

💻 macOS / Linux install command: Run the following in your terminal:

curl -fsSL https://antigravity.google/cli/install.sh | bash

💻 Windows PowerShell install command:

71

irm https://antigravity.google/cli/install.ps1 | iex

73

After installation, close the current terminal and reopen it, run agy --version to check the version, then run agy to log in.

74

In the terminal prompt, choose option 1 (Google OAuth).

75

At this point the browser will automatically pop up the login authorization page (if it doesn't, copy the link generated in the terminal and open it manually in the browser to log in).

💻 Windows CMD install command:

curl -fsSL https://antigravity.google/cli/install.cmd -o install.cmd && install.cmd && del install.cmd

Once installed, run agy in the terminal to launch it; if all goes well you'll see the interactive interface.

Method 3: Google AI Studio

77

If you're looking for a way that is "highly successful with direct access from mainland China, most stable, and completely free", Google AI Studio is the first choice! It is also currently the most friendly channel for non-paying users.

  1. Log in with your Google account.
  2. In the "model picker" on the right, switch directly to Gemini 3.5 Flash (Preview) (note: some users may also see the Gemini 3 Pro preview in the interface; choose as needed).
  3. Start experimenting! It supports up to 1 million tokens of long context and direct uploads of video, PDFs, or even an entire code repository.

💡 Core advantage: No additional paid subscription required, no strict usage limits, and the strongest native multimodal capabilities — it's the best platform to experience the latest Google I/O technology.

Method 4: Gemini Official Web & App

76

For users accustomed to the native web chat interface or mobile app, you can use it directly through the official channel, though there is a certain threshold.

  • 🌐 Web address: https://gemini.google.com (opens new window)
  • 💳 Requirement: You need to subscribe to Google AI Pro (about $20/month) or the higher Ultra plan to unlock the latest Gemini 3.5 Flash / Pro model family.
  • ✅ How to use: Subscribed users can simply select the latest model in the model dropdown at the top of the web or app interface.

Method 5: Mainland Mirror/Aggregator Sites (Direct Connection)

If you don't want to fuss with network environments and VPN tools, some high-quality third-party aggregator platforms in mainland China have already rapidly integrated Gemini 3.5 Flash (preview API).

  • Recommended site: https://chatshare.biz (opens new window)
  • Advantages: Direct access on mainland networks, one-click seamless switching among mainstream models including Gemini 3.5 Flash, GPT-5.5, Claude 4.7, etc. — great for light users who want to compare multiple models.

❓ FAQ and Key Pitfall-Avoidance Guide

# Q1: What's the difference between Antigravity IDE and the main client?

A: After version 2.0, the two became separate apps. The IDE is dedicated to writing code and integrating the AI development environment, while the main client handles account management and other ecosystem features. To experience everything fully, you need to install both.

# Q2: After installing the CLI, the agy command reports "not found"?

A: The install script may not have successfully written the environment variable path into your shell configuration file. Solution: Manually refresh the configuration by running source ~/.bashrc or source ~/.zshrc in the terminal (depending on which shell you use), then try agy again.

# 【🚨 Ultimate Pitfall】Q3: After upgrading to 2.0, all my plugin configs and chat history are gone — what do I do?!

A: Don't panic! This isn't data loss — it's a file path change issue caused by 2.0 splitting the IDE into a separate app. Just manually rename two folders and all your data can be recovered:

For macOS / Linux users, follow these two steps:

  1. Rename the directory /Users/YourUsername/Library/Application Support/Antigravity to Antigravity IDE
  2. Rename the directory /Users/YourUsername/.antigravity to .antigravity-ide

Recovery method: After renaming, restart Antigravity IDE, and you'll find your previous plugins and precious history records are all back, exactly as they were!