cubic targets the review bottleneck. Most AI coding assistants help you write code faster, which then piles more changes onto a review process that is already the slowest part of shipping. cubic reviews the pull request instead: every change is checked not just against the diff but against the rest of the codebase, so it can flag a change that breaks something in another file or another repository. It also learns from your team by turning senior engineers' past review comments into rules that then run automatically on every PR, and lets you write standards in plain English, for example requiring design tokens, forbidding raw environment variables in frontend code, or insisting that migrations use a specific lock timeout.
The workflow is built around keeping merge queues moving. cubic assigns each PR a merge confidence score from one to five, auto-approves genuinely low-risk changes like dependency bumps, documentation, or copy edits, and routes anything risky to a human. It works where developers already are: reviews appear in GitHub with two-way sync, and you can open the same PR in cubic by swapping github.com for cubic.dev in the URL. A desktop app for macOS, Windows, and Linux presents changes in reading order rather than alphabetically, groups related changes, shows a diagram of what changed, and lets you ask questions about the PR. The same review also runs in the terminal before you push, and comments can be picked up by coding agents such as Claude Code, Codex, and Cursor, which push fixes back.
For issues that never appear in a pull request, cubic runs thousands of background AI agents that scan the codebase on a schedule, triage findings, notify owners, and create tickets, with one-click fixes that resolve the ticket once merged. The product advertises top placement on independent code review benchmarks and is used by teams including n8n, Cal.com, Better Auth, and Browser Use. On privacy, cubic states that code is reviewed in real time and never stored or used to train AI, and it is SOC 2 compliant, which matters for teams that cannot send proprietary code to an arbitrary service.
