Agentic Index
Greptile vs Sonar (2026)
Greptile builds a graph of your repository so review carries full codebase context, catching cross file bugs that diff only tools miss, free for qualified open source and 30 dollars per developer a month for Pro with fifty reviews included then a dollar each.
Sonar is the verification layer and automated review standard, documenting 12 of 14 against Greptile's 8.5, free tier with cloud plans by lines of code. The honest split: Greptile finds the bug that spans four files, Sonar guarantees the rules were checked every time.
Choose Greptile if
- Cross file bugs are what keeps getting through, and diff scoped review is why.
- Repository graph context is the capability you are buying, not rule coverage.
- Per review pricing above an included allowance matches bursty pull request volume.
Choose Sonar if
- Consistency matters more than insight: every rule checked on every change, deterministically.
- Documented coverage is materially broader across testing, security and governance.
- You need a quality gate that engineering standards or compliance will recognize.
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