MergeSafe vs Greptile
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How is MergeSafe different from Greptile?
Greptile reviews your code with context from the whole codebase, and can test the flows a change touches. MergeSafe reviews it too, then decides whether it is safe to merge: a free dependency gate for malicious and known-vulnerable packages, and a check that fails while a blocking finding is open.
Checked November 2026 against Greptile’s own pricing page and docs (links below).
At a glance
| Greptile | MergeSafe | |
|---|---|---|
| Pricing | Prepaid credits at $1 each, shared across the org, no seat fees. A review costs 1, 3 or 10 credits by depth. Enterprise is custom. | Per review, from a prepaid balance. No seats. See Pricing. |
| Free | Starter: one developer, 50 credits a month. Free for qualified non-commercial open source. | $20 to start. The dependency gate is free on every repository. |
| Platforms | GitHub, GitLab, Bitbucket, Gitea and more. Self-hosting, including air-gapped. | GitHub only. |
| Dependency checks | Not described in its docs. | The dependency gate flags known-vulnerable, malicious and made-up npm and PyPI packages. |
| Merge check | Auto-approve for a clean 5/5 review; your repository’s merge rules still decide. | The mergesafe-review check fails while a P0 or P1 finding is open. |
| Testing | TREX, an end-to-end testing agent, runs your app in a sandbox and clicks through the flows a change touches. | Some findings are proved by running a short script in a sandbox. |
| Production errors | Not described in its docs. | Sentry errors become GitHub issues; tested fixes are optional. |
| CLI and agents | A CLI for local reviews, an MCP server and one-click handoff to coding agents. | Findings over MCP and the API. |
Where Greptile is strong
- Codebase context. It builds a graph of your repository and looks at the impact of a change beyond the diff.
- Testing. TREX checks the user flows a change touches and reports back with video.
- Where it runs. Many Git hosts, and self-hosting down to air-gapped installs.
- Reach. It says 22,000+ teams use it.
- Learning. It picks up your team’s standards from reactions and replies.
Where MergeSafe is different
- Supply chain on every pull request. The dependency gate checks each new or changed package for known vulnerabilities, malware, lookalike names and names the registry has never seen, with or without a review, free.
- A check you can require. The merge-readiness score comes with a check run that blocks the merge while a P0 or P1 is open, once you make it required.
- After the merge. The advisory check tells you when a new advisory affects your code, and Sentry errors can become tested fixes.
Which should I pick?
Pick Greptile if you need GitLab, Bitbucket or self-hosting, or want end-to-end tests of the flows a change touches. Pick MergeSafe if you are on GitHub and want one gate before merge that also covers the packages a pull request adds.
Sources
Greptile’s pages, checked November 2026:
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