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Gemini 3.5 Flash Is Good. That’s Not the Story

2026-05-22 · 01:19 UTC ·Matt Maher ·1 min read

Brief

Matt Maher’s hands-on review and demo video (published 2026-05-22) benchmarks Gemini 3.5 Flash—~75% planning quality, 46% intent recovery—and tests Antigravity 2.0’s agent-first workflow. He demonstrates the new AGY CLI replacing Gemini CLI, the removed IDE panels, the browser skill via remote-debugging Chrome, and live demos: slicing the keynote for every “agent” mention and generating a cartoon.

Why it matters

Gemini 3.5 Flash scored ~75% planning quality and 46% intent recovery on Matt Maher’s CARE benchmark (video published 2026-05-22), making it fast and practically useful but placing it below Sonnet on both axes.

Key details

  • Maher emphasizes that intent recovery (46% at medium effort) matters more than raw planning when a model must execute long, durable plans.
  • Antigravity 2.0 is 'unapologetically agent-centric': it removes the old IDE elements (terminal, extensions, panels), replaces Gemini CLI with AGY (similar to Codex/Claude Code), and adds multiple projects, parallel threads, scheduled tasks, plus a built-in browser skill via remote-debugging Chrome; demos included cutting the keynote to every 'agent' mention and using the browser skill to generate a cartoon.
Source evidence

Google I/O dropped Gemini 3.5 Flash and Antigravity 2.0 on the same day, and the keynote leaned on the word "antigravity" so hard I had to cut a supercut of it.

So how good are they actually? I ran Gemini 3.5 Flash through my CARE benchmark and put Antigravity 2.0 through real work, including a live video cut and a browser-skill demo.

This is not a dunk. Gemini 3.5 Flash is genuinely fast and useful. Antigravity 2.0 is a real product bet on an agent-first future, with the kind of developer friction that comes with dropping the IDE most people expected. Here is what I found.

What I cover:

Gemini 3.5 Flash on the CARE benchmark: ~75% planning quality, 46% intent recovery at medium effort, landing below Sonnet on both axes

Why intent recovery matters more than raw planning when the model has to execute a long durable plan

Antigravity 2.0 vs the old Antigravity IDE: what got cut (terminal, extensions, panels) and why Google is calling it "unapologetically agent-centric"

AGY, the new Antigravity CLI that replaces Gemini CLI and feels a lot like Codex CLI or Claude Code

Multiple projects, parallel threads, scheduled tasks, and the built-in browser skill via remote-debugging Chrome

Two live demos: using Antigravity 2.0 to cut the keynote down to every "agent" mention, and using the browser skill to have ChatGPT generate a silly cartoon

Links:

Try Gemini:
https://gemini.google.com/

Google Gemini 3.5 announcement:
https://blog.google/intl/en-africa/products/explore-get-answers/gemini-3-5/

Google Antigravity 2.0:
https://antigravity.google/product/antigravity-2?app=antigravity

Antigravity developer overview:
https://blog.google/innovation-and-ai/technology/developers-tools/google-io-2026-developer-highlights/

Gemini #Antigravity #AICoding #AIAgents #GoogleIO

00:00 - Intro
01:23 - Gemini 3.5 Flash Scores
05:43 - Anitgravity
07:42 - Antigravity CLI
09:08 - Antigravity Desktop
12:10 - Using Antigravity
13:03 - Antigravity and the browser
15:48 - Closing

Channel: Matt Maher
Published: 2026-05-22
Video URL: https://www.youtube.com/watch?v=kLmuAueVK9Q