Rating certificate · AW/26-09/51326 Sept 2026
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The Register / Coding agents / Google Antigravity
Register entry · Coding agents · updated 26 Sept 2026
Google Antigravity
Google Antigravity launched in November 2025 as an agentic IDE with a separate manager view for running several agents and a browser subagent that tests web apps. Antigravity 2.0, announced at Google I/O in May 2026, added a standalone desktop app for orchestrating parallel agents and scheduled background tasks, the Go-based Antigravity CLI that replaced Gemini CLI, and an SDK. It is free for individuals with weekly rate limits, with higher limits through Google AI Pro and Ultra subscriptions and an organisation offering through Gemini Enterprise on Google Cloud.
What reviewers and users praise
- Some users rate the Antigravity CLI well above the Gemini CLI it replaced (HN, Sept 2026).
- Users report fast results for quick custom tools and hard one-shot tasks with Gemini 3.8 in Antigravity (HN, Sept 2026).
- Generous free individual tier with access to Gemini and Claude models (pricing page).
What they criticise
- The forced background update to Antigravity 2.0 in May 2026 wiped history and changed the workflow, drawing strong criticism (0xsid blog; HN).
- Quota and plan-rule changes on paid tiers frustrate users; some cancelled (HN, Sept 2026).
- Terms of service allow account suspension for third-party usage, raising lock-in concerns (HN, Sept 2026).
- Repeated prompt-injection and code-execution findings since launch, some classed by Google as known/intended behaviour.
Experts vs the crowdcrowd cooler by 8
Experts55
Crowd46
| Price | Free, paid from $100 |
|---|---|
| Use it via | Desktop app, CLI, API |
| Runs on | macos, windows, linux |
| Licence | proprietary |
| Updated | Evidence collected 26 Sept 2026 |
How the rating was worked out
Weights for Coding agents: adoption 35%, experts 40%, crowd 25%. Pillars without enough evidence are left out and the others re-weighted. The method.
| Adoption & momentumweight 35% | — | No public reach signal found |
|---|---|---|
| Expertsindependent reviews · weight 40% | 55 | 8 independent reviews (2 positive · 5 mixed · 1 negative), averaged toward 50 for small samples. |
| Crowdcommunity sample · weight 25% | 46 | 20 dated posts from hackernews, reddit, forum: 7 positive · 4 mixed · 9 negative (positive + ½ mixed) ÷ n, averaged toward 50 for small samples |
| Rating | 51 | Provisional: low confidence (2 of 3 pillars, 20 community posts). |
Evidence checks. 2 GitHub issues not counted as sentiment. 1 post over the three-per-thread limit not counted. 3 items could not be checked at the source (the page could not be fetched, or the quote is from a comment under the linked post); kept and marked “unverified”. How evidence is checked.
Editorial adjustment. Incident-history grade reviewed under methodology revision 2 (see the trust section).
Trust & safety
Seven dimensions graded A–D from documented facts. Overall: B.
A
Permission model
On macOS and Linux the terminal sandbox is enabled by default (Default preset: commands run in the sandbox, anything outside requires approval); Request Review and Turbo presets documented. Windows uses an older permission model and the sandbox is a preview requiring manual enablement. source
A
Data access scope
Project folders mounted read-write; everything else inaccessible to sandboxed commands unless allowed; sandboxed commands have no network by default; Deny/Ask/Allow rules for commands, files, URLs and MCP; non-workspace files require approval; ~/.ssh and .env blocked. source
C
Data storage
Agent runs locally but prompts and interactions go to Google's cloud; terms say users can delete Interactions by emailing antigravity-support@google.com. No region or retention controls documented in the terms read. source
C
Data retention & training
Terms: 'We use Interactions to evaluate, develop, and improve Google and Alphabet research, products, services and machine learning technologies'; users may change this in settings (opt-out). No retention period stated. Gemini Enterprise (Google Cloud) users are under separate terms. source
D
Incident history (24 months)
Repeated serious findings since the November 2025 launch: indirect prompt injection exfiltrating credentials and code (PromptArmor, Nov 2025; Google's bug bounty lists agent file/command access as known issues), persistent code execution via trusted rules (Mindgard), and an RCE via the find_by_name tool that ran before Strict Mode constraints (patched 2026-02-28). A widely reported December 2025 drive deletion happened in non-default Turbo mode. Kept at D under revision 2: Google's bug-hunters page lists the agent's file and command access used in the PromptArmor exfiltration as a known issue rather than a fixable vulnerability, so that issue is unresolved by design; the later RCE was patched. source
n/e
Compliance
No Antigravity-specific SOC 2 / ISO attestation found on the pages read; the organisation offering runs under Gemini Enterprise / Google Cloud terms, which were not checked.
B
Transparency
Closed source (the antigravity-cli GitHub repo holds only README, changelog and examples; community issue #4 petitions for open-sourcing). Detailed dated public changelog and docs. source
The experts
8 named independent reviews found; dated reviews from the last 12 months are scored.
- negative
Forcing this kind of transition on users via a background update is in incredibly poor taste.
Sid (0xsid.com) · 21 May 2026 · 0xsid.com - mixed
When you look closer it's actually a fair bit more interesting than that.
Simon Willison · 18 Nov 2025 · simonwillison.net - positive
Antigravity: Super-power tool at your disposal
Dhruvam (Level Up Coding) · 25 Nov 2025 · unverified · levelup.gitconnected.com - positive
I believe Google Antigravity is an ambitious leap toward an agent‑first development paradigm.
Himanshu Tyagi (CodeItBro) · 21 Feb 2026 · codeitbro.com - mixed
It’s not perfect, but the stuff that’s good is really good. The future of GUI-based coding is clearly heading this way.
Jose Canciani (Dev Genius) · 7 Apr 2026 · unverified · blog.devgenius.io - mixed
While Antigravity has nailed the automation, it turned out to be a resource hog on my MacBook Pro.
Parth Shah (XDA Developers) · 12 Apr 2026 · xda-developers.com - mixed
For Antigravity 2.0 to earn a fifth slot it would have to do something those four can't
Thomas Wiegold · 27 May 2026 · thomas-wiegold.com - mixed
AntiGravity is a tool for experimentation, not production reliance.
Zane (vibecoding.app) · 8 Jun 2026 · vibecoding.app
The crowd
20 coded posts from hackernews, reddit, forum.
7 positive4 mixed9 negative
- negative
Overall the experience was pretty bad for what is expected from them
Google's Antigravity bait and switch · 21 May 2026 · news.ycombinator.com - negative
So I can work in code like in a traditional way and AI assists me. But it was a broken experience
Google's Antigravity bait and switch · 21 May 2026 · news.ycombinator.com - negative
My Antigravity (forced) replacement for Gemini CLI requires me to log on via browser every time I use it, and my Antigravity IDE won't update at all
Antigravity 2.0 Tops the OpenSCAD Architectural 3D LLM Benchmark · 22 May 2026 · news.ycombinator.com - negative
To be brutally honest, I'm disappointed with antiGravity. It feels incredibly unGoogle-like. The AI billing models are fragmented
Antigravity 2.0 Tops the OpenSCAD Architectural 3D LLM Benchmark · 22 May 2026 · news.ycombinator.com - negative
I gave up on Antigravity when Google changed its rules around paid plans AI quotas
Google Antigravity introduces Boost deep reasoning (/boost) · 1 Sept 2026 · news.ycombinator.com - negative
There was a brief period of time I was using Anti-gravity as my daily driver when they first introduced it and then they just completely screwed it up.
Google Antigravity introduces Boost deep reasoning (/boost) · 1 Sept 2026 · news.ycombinator.com - positive
Antigravity CLI is far, far superior to Gemini CLI.
comment thread (Sept 2026) · 21 Sept 2026 · news.ycombinator.com - positive
I have been happy with Google's Antigravity harness and Jules so looking forward to playing with this.
comment thread (Sept 2026) · 21 Sept 2026 · news.ycombinator.com
Pricing
As published, checked 26 Sept 2026.
| Plan | Price | Notes |
|---|---|---|
| Individual (Free) | Free | Gemini Flash/Pro, Claude Sonnet and Opus, gpt-oss-120b; unlimited tab completions and command requests; basic weekly rate limits. |
| Google AI Pro | Custom | Higher rate limits and flexible AI credit pool. US price not shown on the pages read (the Gemini subscriptions page served India pricing: INR 1,950/month). |
| Google AI Ultra (5x) | $100 / monthly | New $100 tier announced at I/O 2026 with 5x higher Antigravity limits than Pro. |
| Google AI Ultra (top tier) | $200 / monthly | Price cut from $250 to $200 at I/O 2026. |
| Organization (Gemini Enterprise, Google Cloud) | Custom | Google Cloud integration and API pricing. |
Recent changes
- 22 Sept 2026
2.17.0: /plan mode with editable plans and a Plan Review Policy setting. source
- 1 Sept 2026
/boost deep reasoning command on paid plans across Antigravity 2.0 and the CLI. source
- 18 Jun 2026
Antigravity CLI replaces Gemini CLI on Free/Pro/Ultra tiers. source
- 19 May 2026
Antigravity 2.0 at Google I/O: standalone multi-agent desktop app, Go-based CLI, SDK; new $100 AI Ultra tier. source
Ranked alongside
Other ranked entries in Coding agents.
OpenCodeAnomaly75
Claude CodeAnthropic73
Zed (Agent Panel)Zed Industries73
GitHub CopilotGitHub (Microsoft)72
Codex (CLI and app)OpenAI71
Sources
Every figure above traces to one of these, observed up to 26 Sept 2026.
- TechCrunch: Google launches Antigravity 2.0 with an updated desktop app and CLI tool at I/O 2026
- Antigravity CLI GitHub repo (2,383 stars; no source code; 44 releases on/after 2026-06-28)
- Antigravity SDK for Python (3,529 stars)
- HN: Google Antigravity TOS: 3rd party usage can get Google account suspended (2026-09-03)
- HN: Google Antigravity just deleted the contents of whole drive (2025-12-01)