Greptile's pitch is context: it indexes your whole repository as a graph so its comments can point at code the diff never touched. That is a real advantage for cross-file bugs, and it is not what Firetrail does. If you're searching for “Greptile alternatives”, this page separates the two reasons people look, then shows the two products side by side. Facts were read on Greptile's own pages on September 4, 2026.
updated September 4, 2026 · every fact links to where we checked it
Greptile · codebase-aware review bot
greptile.json, chat over the codebase and a Greptile MCP for agents; TREX, a testing agent that writes and runs tests for a PR.Firetrail · change-impact intelligence
Greptile's repository graph and Firetrail's diff-only reading are opposite design choices, made for different jobs. Neither is wrong; the second one is explained on our security page.
✓ does it · ◐ partly, see the note · — doesn't. Greptile facts from its site and pricing page; Firetrail facts from ours.
| Greptile | Firetrail | |
|---|---|---|
| Inline comments on the changed lines | ✓with suggested fixes | —one comment per PR, by design |
| Reasons about code outside the diff | ✓whole-repository graph | ◐only Firetrail's own history of your PRs: a “risky history” note when a PR touches code a past bugfix traced back to |
| Hands fixes to your coding agent | ✓Fix with your agent / Fix All | ✓Rework plans executed by your agent through the Firetrail MCP; Business |
| Writes tests for the PR | ✓TREX, three credits per run | —estimates how much of the added code the PR's own tests reach instead |
| A risk score for the change, comparable across PRs | — | ✓Future Debug Cost, 0–100, itemized |
| Verdicts from several specialized reviewers | — | ✓one on Free, three on Starter, six on Pro, ten on Business |
| Says whether the PR should be split, and how | — | ✓Multi-Intent check on every PR; a Rework plan per PR on Business |
| Detects changes the description never mentioned | — | ✓intent drift, Pro and up |
| Traces bugfixes back to the PRs that caused them | — | ✓origin tracing, Business |
| Learns from your feedback | ✓👍/👎 and replies | ◐agree/disagree on findings |
| Custom checks in plain English | ✓custom rules | ✓custom classifiers, 10 on Pro, unlimited on Business; they never move the score |
| Can block merges | ◐as a required check, if you configure it | ◐opt-in Merge Checks bound to facts, simulation first; Business |
| MCP for coding agents | ✓Greptile MCP | ✓Review Brief, Security Audit, Rework |
| Self-hosting | ✓Enterprise | — |
| Platforms | GitHub, GitLab | GitHub |
| What it reads | The diff plus a graph of the entire repository | The diff, title and description only (details) |
| Pricing | Starter is free with 50 review credits a month for one developer; Pro is $30 per seat per month with 50 credits per seat and $1 per extra credit (a standard review is one credit, a TREX test-writing run is three); Enterprise is custom with self-hosting and SSO. | Free for one repository and 50 PRs a month. Starter $24, Pro $39 and Business $49 per active developer per month (about two months off billed yearly), each with 50 analyzed PRs per seat per month, then $1 per PR ($0.75 on Business). Pushes and re-runs of an already-counted PR are free. |
The most complete inline reviewer: walkthrough, severity-sorted comments, one-click fixes, 50+ linters. Four git platforms.
Read →Built into github.com and included with paid Copilot plans.
Read →Anthropic's managed multi-agent review with a verification step; also codebase-aware. Claude Team and Enterprise.
Read →Reviews on GitHub, fixes in Cursor.
Read →Rules-driven review; the open-source PR-Agent can be self-hosted.
Read →Prices, what each reads, and who each is for.
Read →Yes. Both are GitHub Apps; Greptile posts inline comments, Firetrail posts one comment and a neutral check. Neither replies to the other.
For finding cross-file bugs, yes, and that's Greptile's job. For judging a change (is it one deliverable, is it disclosed, is it tested, how will it feel to maintain) the diff plus the PR's own description is most of the signal, and reading only that keeps the payload small and auditable. Firetrail adds its own history of your PRs, which is how it knows a file has bitten you before.
Greptile Pro is $30 per seat with 50 review credits per seat and $1 per extra credit; a re-review after a push spends another credit. Firetrail Pro is $39 per active developer with 50 distinct PRs per seat and $1 per extra PR; pushes and re-runs of a counted PR are free, which matters because teams average about two runs per PR. Firetrail Starter is $24 with the four core checks and three reviewers, and Free covers one repository with one reviewer.
No. Firetrail estimates how much of the added production code the PR's own tests reach, shows the untested line ranges, and its QA reviewer, Mike, says which cases are missing when he is in the project's lineup. Writing the tests is your agent's job; a Rework plan tells it which ones.
Different jobs. Greptile finds line-level and cross-file problems in the generated code. Firetrail tells you whether the PR is several deliverables, whether the description matches the diff, whether the risky part is tested, and plans the split for your agent. For agent-heavy teams we'd run both.
Connect one repository on the Free plan and compare the two comments on your next real PR.