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Verified April 2026. Pricing, model availability, and features in this space change on a near-weekly basis — verify current details against each vendor’s own pricing and docs pages before making a purchase decision.

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How to read this comparison

  • Primary sources only. Every factual claim on these pages was sourced from the vendor’s own docs, pricing, changelog, or product pages. Third-party summaries, Reddit threads, and AI tool directories were not used. Source URLs are cited inline.
  • “Not publicly documented” is a real answer. Some vendors don’t disclose their agent architecture, the exact model powering their product, or their data-retention policy. Where that’s the case, these pages say so rather than guessing.
  • MergeWatch is the publisher. These pages live in the MergeWatch docs. Factual bias was minimized by sticking to competitors’ own marketing claims and documented behavior; cells where MergeWatch has a differentiator are marked by what MergeWatch does, not by negatives inferred about competitors.
  • Pricing is in USD and per-seat/month unless noted. Promotional discounts and annual/monthly splits are collapsed for readability; see each vendor’s pricing page for current exact structure.

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Tools covered

MergeWatch

Open-source, multi-agent, self-hostable

CodeRabbit

Commercial PR-review platform

Greptile

Graph-based codebase indexing

GitHub Copilot code review

Native PR review inside GitHub

Claude Code

Anthropic’s CLI + GitHub Action

OpenAI Codex

OpenAI’s agentic coding product

Cursor BugBot

Bug-focused PR reviewer

Qodo Merge

AGPL core + commercial product
Also see other tools worth knowing — Ellipsis, Sourcery, Graphite Diamond.

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Quick matrix

Cells above are compressed for skim-ability. For side-by-side boolean features, see the feature matrix. For full sourced detail on any tool, click its name in the cards above.

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Known gaps in this comparison

A handful of facts we could not fully verify in primary sources; worth checking vendor pages directly if these matter to your decision:
  • CodeRabbit — specific model used on the default SaaS tier.
  • Greptile — public data retention and training posture (DPA exists on Enterprise).
  • GitHub Copilot code review — the specific model powering the review feature.
  • OpenAI Codex — Codex-specific retention numbers beyond OpenAI’s general policy.
  • Cursor BugBot — the exact models used for detection (vs. autofix).
  • Qodo Merge commercial tier — LLM flexibility beyond the open-source PR-Agent core.

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Dimensions deliberately left out

  • Review quality / false-positive rate. Every vendor has a marketing number (CodeRabbit’s “75M defects,” BugBot’s “50% of issues get fixed”). None are independently verifiable and all use different counting methods. Benchmarking is outside the scope of a feature-and-pricing comparison.
  • Supported languages / frameworks. Too stack-specific to matrix; check the individual vendor docs for your language.
  • SSO / RBAC granularity. All vendors at the Enterprise tier offer SSO; the differences between SAML providers and RBAC granularity need a vendor-specific RFP, not a table row.

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Contributing

If a fact on any of these pages is wrong or out of date, please open a PR with the correction and the vendor URL that backs it up. Unsourced changes will be asked for a source before merge. The aim is for this section to stay factual — a snapshot readers can trust, not a marketing artifact.