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Open-source Greptile alternative: J-Bot Review
Updated July 4, 2026 · pricing and features checked against greptile.com on this date
J-Bot Review is an open-source (MIT) alternative to Greptile that runs inside your own GitHub Actions instead of a vendor's cloud. It reviews with a model you already pay for, posts diff-anchored findings that a second model verifies before they land, and adds $0 per seat with no credit system. Greptile is a hosted reviewer at $30/seat/month; its main draw is precomputed full-codebase context.
Side by side
| Greptile (Pro) | J-Bot Review | |
|---|---|---|
| price | $30/seat/mo, 50 credits per seat included, $1 per extra credit (1 credit = standard review, 3 = TREX deep review); free Starter tier for 1 developer | $0 per seat, MIT license, no credits — you pay only your model provider (or $0 with OpenCode Zen free models / a CLI seat you already pay for) plus CI minutes |
| where it runs | Greptile's cloud (self-host on Enterprise) | Your GitHub Actions runner, as a container action |
| code path | Your repositories are indexed and processed on their servers | Read-only checkout on your runner; the diff goes only to the model you configure, on your own key |
| codebase context | Precomputed full-repo index brought into each review | Live exploration of the checkout at review time, plus house rules and current API docs via Context7 |
| model choice | Managed by the vendor | 30+ backends: OpenCode gateways (Claude, OpenAI, Gemini, DeepSeek…) or CLI seats (Codex, Cursor, Devin, Cline, Kilo, Command Code, Grok Build, Qoder) |
| review volume | Credit-metered (50/seat/mo included, then $1/credit) | No J-Bot cap — bounded by your model plan/quota and CI |
| config files | greptile.json, custom rules in the product | Reads greptile.json, .coderabbit.yaml, AGENTS.md, REVIEW.md, Cursor rules |
| programs | Free for qualifying OSS (MIT/Apache, non-commercial); 50% off early startups | Free for everyone — the action itself never bills |
| self-host | Enterprise plan (custom pricing, SSO/SAML) | Default mode — always on your infrastructure; fork/pin/audit freely |
| source | Proprietary | Open source (MIT), on the GitHub Marketplace |
Numbers from greptile.com/pricing, checked 2026-07-04 — verify current pricing there.
When Greptile is the better choice
- You want precomputed whole-codebase context in every review without running anything yourself.
- You're a solo dev or a qualifying open-source project — Starter is free for one developer, and MIT/Apache non-commercial projects pay nothing.
- You want a managed product with support, hosted custom rules, and an enterprise path with SSO/SAML and vendor-run self-hosting.
When J-Bot Review is the better choice
- Your code can't be indexed on someone else's servers. The review runs on your runner; only the diff reaches the model you chose, on your own account.
- Per-seat + credit pricing doesn't fit. No seats, no credits — heavy PR volume costs whatever your model plan costs, and can be $0 on free models or an existing CLI seat.
- You want to pick the model and switch it with one repo variable as the frontier moves.
- You want to audit your reviewer. MIT-licensed action you can read, pin, and fork.
J-Bot Review reads your existing greptile.json, so your tuned rules keep working. Add one workflow file and one secret, run both reviewers side by side on a few PRs, and keep whichever posts the findings you trust.
FAQ
How does J-Bot Review's pricing compare to Greptile's credits?
Greptile Pro is $30/seat/month with 50 review credits included per seat and $1 per additional credit; deeper TREX reviews cost 3 credits, as of July 2026. J-Bot Review is an MIT-licensed action with no per-seat fee and no credit system — you pay only the model you bring (which can be $0 with OpenCode Zen free models or a coding-CLI seat you already pay for) plus normal CI minutes.
Does J-Bot Review understand my codebase like Greptile's index does?
Differently. Greptile pre-indexes your repositories on its servers and brings that graph into reviews. J-Bot Review checks out your repo read-only on your runner and lets the reviewing agent explore the actual code at review time, plus your house rules and current API docs via Context7. Both go beyond the raw diff; Greptile's context is precomputed, J-Bot's is fetched live from the checkout.
When is Greptile the better choice?
If you want a managed service with precomputed full-codebase context, custom rules in a hosted product, a free tier for a single developer, free coverage for qualifying open-source projects, or enterprise self-hosting with SSO and support — Greptile is a strong hosted option. J-Bot Review is the fit when you want the reviewer inside your own CI, on your own keys, at $0 per seat, with any model.