35 features. 8 categories. 5 competitors. Verified against public documentation.
Sentry (Python), Cal.com (TypeScript), Grafana (Go), Keycloak (Java), Discourse (Ruby). Default settings. Scored by inline comment identifying the specific bug.
We publish these numbers transparently. We're actively improving critical bug detection.
Verified against each tool's documentation and public feature pages. 35 capabilities across 8 categories. Cursor excluded — it's an editor, not a PR review tool.
Grapple PR
30/35
Greptile
15/35
Copilot
6/35
CodeRabbit
25/35
Graphite
5/35
Persistent codebase knowledge graph
Structural graph of functions, classes, imports, and dependencies
Blast radius analysis
Traces downstream impact through dependency graph
Cross-file context injection
Resolves imports and includes referenced code from outside the diff
Bug hotspot detection (churn + complexity)
Identifies high-churn, high-complexity files statistically likely to have bugs
Git history / commit pattern awareness
Specialized review agents
Grapple: 6 agents (Security, Logic, Architecture, Performance, Style, Verification)
Multi-pass review for large PRs
Second pass hunts for bugs the first pass missed on >500 line PRs
Finding clustering + deduplication
Merges duplicate findings from multiple agents into one
Confidence scoring (per finding)
0-100 score per finding — suppress noise, surface signal
Verification agent / self-checking
Cross-checks every finding against codebase evidence
Deterministic line verification (anti-hallucination)
Verifies cited line numbers actually exist in the diff
Intent-aware review (reads tickets/issues)
Human review awareness (no duplicate feedback)
AST-aware security scanning (SAST)
Grapple: 60+ OpenGrep rules. CodeRabbit: 40+ tools (Semgrep, Checkov, Brakeman). Copilot: CodeQL (separate license)
Taint-tracking security prompts
Source-to-sink data flow analysis in LLM prompts
Secrets detection
CodeRabbit: Gitleaks. Grapple: OpenGrep + regex patterns
CI status + Dependabot alerts in context
Languages supported
Grapple: 16 with deep AST parsing. Greptile: 30+. Copilot/CodeRabbit: 30+. Graphite: mainstream languages
Language-specific security rules
Per-language SAST rules (not just LLM-based)
IaC scanning (Terraform, Docker)
CodeRabbit: Checkov, Hadolint. Grapple: Terraform rules in OpenGrep
Context-aware auto-fix
Greptile: hands off to external agents. Others: native fix generation
GitHub suggestion blocks (committable)
Create issues from findings
Agentic fix + commit (fixes CI, pushes code)
Agent commits fixes directly to the branch
Feedback-aware prompts (learns from accept/dismiss)
Agents see historical accuracy per category per repo
In-repo config file
Grapple: .grapple.yml. Greptile: greptile.json. Copilot: copilot-instructions.md (4K limit)
Custom rules (natural language)
Hotfix branch detection
Tech debt scoring
Codebase analysis on signup
Mermaid / sequence diagrams on PR
SSO / SAML
SOC 2 Type II
Self-hosted / VPC deployment
Multi-platform (GitHub + GitLab + Azure + Bitbucket)
CodeRabbit: all 4. Greptile: GitHub + GitLab. Grapple: GitHub only (multi-platform planned)
Feature data verified against each tool's public documentation and feature pages as of April 2026. "Partial" means the capability exists but with significant limitations. Cursor is excluded from the feature comparison because it is an AI-powered editor, not a PR review platform — it has no PR integration, no review bot, and no CI/CD workflow. Think we got something wrong? Let us know.