NucleusIf Cursor is a cursor, Nucleus is the computer.
Nucleus is the full pipeline — codes, reviews, runs security audits, generates images and 3D in the repo, automates outcomes triggered from Slack, Telegram, or WhatsApp, and ships a chat product on the side. Stop stacking subscriptions. Start shipping a self-improving codebase.
Cursor is the editor. Nucleus is the editor and the reviewer, the auditor, the asset shop, the automations — one $20 bill, three runtimes running on the subs you already pay.
Same bill. Whole stack.
One bill. Four reasons.
The asset shows up in the repo. Not in a tab.
Image, video, and 3D generation run inside the agent shell. Ask for a marble Atlas GLB and Nucleus drops `atlas.glb` into `public/models/`, wires it into the Three.js scene, and refreshes the preview. The Cursor flow is "leave the editor, generate elsewhere, copy back, manually wire it up." Nucleus skips every step after "ask".
Connect your existing subscription. Get started in Nucleus for free.
Cursor is $20 for the editor — then you stack an asset generator (Nano Banana), a review company (CodeRabbit), a SAST scanner (Snyk), and a chat (ChatGPT) on top. The full kit starts at ~$143/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. Most tools stop at one layer — PR review. Nucleus adds two more — 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, an issue lands. A Nucleus agent spins up in a cloud sandbox, works the brief, and an output lands — a PR comment, a fix PR, a Sentry resolution, a digest, a release note. Cursor ships slash commands and hooks; you wire the workflow yourself. Nucleus wires events to outcomes — every result lands in one inbox.
One Subscription. Self Improving Codebase.
Who switches, honestly.
Stay on Cursor if Tab autocomplete is the only feature you care about, or your team is already deep enough in Cursor that the switch cost outweighs everything else.
Switch to Nucleus if
- you'd rather pay one $20 bill than four
- you want PR review at the diff before the commit
- you generate any asset more complex than a unit test
- you want the whole repo audited for security on a schedule
- or you want a chat product included in the same subscription
Having the full stack in one place, compounds.