Google Antigravity 2.0 vs. Claude Code vs. Codex: Which Agentic Coding Tool Should You Actually Use?

Six weeks ago, Google stopped describing Antigravity as an editor. At I/O 2026 on May 19, it relaunched as Antigravity 2.0 — a standalone desktop app, a Go-based CLI, an SDK, and a Gemini API tier, built around orchestrating teams of autonomous agents instead of helping you type faster. It's still shipping patches weekly: the changelog shows six release builds on July 1 alone.

That relaunch is worth a proper look next to the two tools most developers already have open: Claude Code and OpenAI's Codex. All three now call themselves agentic coding tools. They don't mean the same thing by it.

Three different bets on what "agentic" means

Google Antigravity 2.0 is a fork of VS Code that has quietly demoted the editor to one surface among several. The desktop app is a hub for dispatching multiple agents at once — one on the frontend, one on the API layer, one running tests — each producing inspectable "Artifacts" (screenshots, walkthroughs) you review rather than diffs you read line by line. Its most distinctive piece is the Browser Subagent: it opens a real Chrome instance, navigates to your running dev server, clicks through the UI it just built, and loops back to fix what it sees break. The team behind it is, not coincidentally, largely the former Windsurf leadership — Google licensed Windsurf's technology and hired CEO Varun Mohan and much of the engineering team in mid-2025 after OpenAI's acquisition talks with Windsurf collapsed. (The name is a nod to Mr.doob's antigravity physics demo and Python's import antigravity easter egg, in case you were wondering.)

Claude Code takes the opposite architectural bet: it doesn't want your editor at all. It's a CLI tool that lives in your terminal and works alongside whatever you already use — VS Code, JetBrains, vim, nothing — reading and editing files, running commands, and calling out to subagents when a task benefits from a separate context window. Its edge isn't a UI, it's depth: a skills system with a genuinely large third-party ecosystem, a 1M-token context window on the API, and Sonnet 5 — now the default model as of July 1 — built specifically for staying on plan across long multi-step tasks rather than one clever completion at a time.

Codex sits in between. It runs as a CLI, a VS Code/Cursor/Windsurf extension, a web app at chatgpt.com/codex, and an iOS app, and its strongest feature is delegation: hand it a task and it works in an isolated cloud sandbox for minutes or hours, then comes back with a diff, logs, and test results — or opens the PR itself if you tag @codex in a GitHub comment. Its newer Automations feature goes further, running unprompted on routine work like issue triage and CI monitoring instead of waiting to be asked.

The comparison, stripped of marketing language

	Antigravity 2.0	Claude Code	Codex
Shape	Standalone IDE (VS Code fork) + CLI + SDK	Terminal agent, editor-agnostic	CLI + IDE extension + web + iOS
Default model	Gemini 3.5 Flash	Claude Sonnet 5	GPT-5.5
Signature feature	Browser Subagent (drives real Chrome to test its own work)	Skills ecosystem, 1M-token context, subagents	Automations, cloud sandboxes, @codex in GitHub PRs
Entry point	Free public preview	Requires Pro at $20/month minimum	Free tier, or Go at $8/month
Top individual tier	$200/month (20x Pro limits)	Max 20x at $200/month	Pro 20x at $200/month
Honest catch	Quota cut four separate times, without notice, between Dec 2025 and March 2026	No bundled IDE; Agent Teams and extended thinking burn tokens fast if left unmanaged	Switched to token-based credit billing in April 2026 — cost per task now varies with context size, not a flat per-message rate

Worth pausing on one line in that table: all three converged on $200 a month for their top individual tier. Eighteen months ago "AI coding assistant" meant a $10-$20 autocomplete plugin. The frontier tools have quietly repriced themselves as professional software.

Try each one in under a minute

Antigravity doesn't have a one-line CLI install yet — grab the desktop app from antigravity.google, or follow Google's migration guide if you're moving off Gemini CLI (which stops serving free and Pro/Ultra users on June 18, 2026).

Claude Code

npm install -g @anthropic-ai/claude-code

Codex

npm install -g @openai/codex

So which one should you actually reach for

Pick Antigravity 2.0 if you're building something with a visible UI — a web or Android app — and want an agent that actually clicks through what it built instead of assuming the code is correct because it compiles. It's also the obvious choice if you're already deep in Firebase, Android Studio, or Google Cloud; the first-party integrations are tighter than anything Cursor or Claude Code offer there. Budget for quota uncertainty: this is still the newest of the three platforms, and it has already changed its own rules on paying users more than once.

Pick Claude Code if you care more about a long autonomous task landing correctly than about watching it happen. Multi-step refactors, unfamiliar codebases, architectural analysis — the kind of work where you'd rather review one clean result than babysit a browser tab — is where the terminal-first, model-first approach earns its keep. It's also the natural pick if our article on Claude Code skills convinced you the third-party ecosystem is worth building on.

Pick Codex if your team already lives inside ChatGPT and GitHub. The @codex PR delegation and background Automations mean the agent can pick up real engineering chores — triage, review, monitoring — without anyone opening a new tool. It's also the least disruptive option if you're not ready to change editors or workflows at all.

None of this is exclusive. A growing number of teams run two of these side by side — Claude Code for the correctness-critical refactor, Codex or Antigravity for the UI-facing feature that benefits from a browser loop. Given how much has shifted in just the six weeks since Antigravity 2.0 shipped, don't expect this exact comparison to hold for long.