NucleusAntigravity repels. Nucleus binds.
Antigravity is bound to Gemini; Nucleus is what binds everything else — your sub, your reviewer, your security scanner, your asset gen — into a single workspace, for a self-improving codebase. Auto review on commit. Whole-repo security audit.
Antigravity is bound to Gemini. Nucleus runs Claude Code on your Claude Pro, Codex on your ChatGPT Plus, and Atlas — our own agent — in the same workspace, plus auto review on commit, repo-wide audit, and assets in the codebase.
Same bill. Whole stack.
One bill. Four reasons.
The asset lands in the repo. Inline.
Ask for a hero image, a 6-second product clip, a marble Atlas GLB — Nucleus calls Studio inside the agent shell, drops the file into the right folder, and wires it into the right component. Antigravity has Manager View and a Chromium browser, but no in-repo asset generation.
Connect your existing subscription. Get started in Nucleus for free.
Antigravity is $20 — IDE, chat, and Nano Banana asset gen all bundled. But you still need a PR reviewer (CodeRabbit) and a SAST scanner (Snyk) to ship safely. The full kit starts at ~$93/mo and balloons into the $1,000s once real usage kicks in. Nucleus plugs into the Claude or ChatGPT sub you already pay; that subsidy carries the inference straight through — no markup, no per-token tax. The IDE is free, and the $20 Plus tier bundles everything else.
AI ships 10× faster. And 10× more vulnerabilities.
AI codegen has us shipping 10× faster — and quietly producing 10× more vulnerabilities. Antigravity ships no reviewer at all. Nucleus adds three layers — a PR review, a multi-stage security review across the whole repo, plus an in-app review as you write.
Self-improving. Any event in. Any output out.
A trigger fires — a PR opens, a Sentry spike, a 9 a.m. cron. A Nucleus agent spins up in a cloud sandbox, works the brief, and an output lands. Antigravity's Manager View shows you what the agent did — a past artifact. Nucleus wires what the agent does next.
One Subscription. Self Improving Codebase.
Who switches, honestly.
Stay on Antigravity if Gemini 3.1 Pro is your only model, you live inside Manager View, or agent-driven Chromium verification is the entire wedge.
Switch to Nucleus if
- you want Claude Code and Codex running on the subscriptions you already pay
- PR review at the diff before the commit
- the whole repo audited for security
- in-repo asset generation
- a chat product included in the same plan
- or you don't want to be locked to Gemini
Nucleus runs 50+ models across 10+ providers, so every new frontier release stays inside the same subscription instead of forcing a switch.
Having the full stack in one place, compounds.