Greptile
AI PR reviewer that reads your whole codebase to catch real bugs.
Standout features
Greptile builds a graph of your entire codebase, then reviews each PR like an experienced coworker who actually knows the code.
Worldwide search interest, indexed 0–100 · Google Trends.
Greptile is an AI code-review agent that reviews pull requests with full-codebase context — aiming to catch the bugs single-file tools miss.
- From Greptile (SF, 2023; Y Combinator W24).
- Builds a graph of the entire codebase per review.
- v3 (2025) catches ~3× more critical bugs than v2.
- 2,000+ customers incl. Substack, Brex, PostHog.
Greptile’s edge is reasoning across the whole repo.
- Reviews PRs with cross-file, whole-codebase context.
- Flags logic, dependency and edge-case bugs.
- PR summaries + context-aware fix suggestions.
- Learns project-specific rules over time.
Per-developer pricing aimed at engineering teams.
Greptile fits teams drowning in pull requests.
- Teams whose PR review can’t keep up with output.
- Orgs wanting deep, context-aware bug catching.
- People pairing AI code generation with a quality gate.
- Solo devs who rarely open PRs.
- Anyone wanting a code-writing tool (this reviews).
No tool is perfect — the trade-offs to weigh:
- Reviews, doesn’t write code.
- Per-seat cost adds up for big teams.
- Competitive space — overlaps with CodeRabbit/Graphite.
- Tuning needed to fit your standards.
- ✓Reviews PRs with whole-codebase context
- ✓v3 catches markedly more critical bugs
- ✓Clear PR summaries + fix suggestions
- ✓Learns project-specific rules over time
- ✓Trusted by Substack, Brex, PostHog
- ✕Reviews code — doesn’t generate it
- ✕Per-seat pricing adds up for large teams
- ✕Crowded space (CodeRabbit, Graphite)
- ✕Needs tuning to match your standards
Teams say Greptile catches genuine, non-obvious bugs because it reasons across the whole codebase rather than the diff alone, and the PR summaries save time. The caveats are per-seat cost at scale and that it’s a reviewer, not a generator. Sentiment is positive, especially on teams where review is the bottleneck.
Greptile is built by the San Francisco startup of the same name, founded by Georgia Tech alumni.
Company figures are drawn from public disclosures and reputable trackers (gathered Jun 2026). User and revenue numbers are estimates and move fast.
Pick up to two other coding tools to see them head-to-head on the same rubric.