# Do coding agents recommend Codex code review? > Codex code review was chosen in 13% of 290 judged code review sessions, ranking third. Measured with Claude Code, Codex and Cursor. Source: https://armature.tech/library/do-coding-agents-recommend-codex-code-review Published: 2026-09-08 Publisher: Armature, Inc. (https://armature.tech) --- > Codex code review was chosen in 13% of 290 judged code review sessions, ranking third. It was also raised as a candidate in 4 further sessions without being chosen. This page reports what happened when Claude Code, Codex and Cursor had to solve a problem in code review inside a realistic codebase. Not what a chat assistant says about Codex code review. What an agent actually installed. ## The numbers | | | | --- | --- | | Category | Code review | | Sessions in the category | 290 | | Sessions where Codex code review was chosen | 37 | | Install share | 13% | | Rank in category | 3 of 10 | | Codebases it won in | 7 | | Raised as a candidate, not chosen | 4 | | Chosen when considered | 90% | | Site | openai.com | ## By agent The three agents treat Codex code review very differently. Codex chose it in 37% of its sessions in this category and Claude Code in 0%, a spread of 37 points. | Agent | Sessions | Chose Codex code review | Share | | --- | --- | --- | --- | | Claude Code | 100 | 0 | 0% | | Codex | 100 | 37 | 37% | | Cursor | 90 | 0 | 0% | A single blended install share would report the midpoint and hide both ends. If most of your users run Claude Code, your real position here is 0%, not 13%. ## By who was asking Codex code review does much better with one kind of buyer than another. It won 22% of sessions asked as vibe coder and 3% of those asked as enterprise team. | Who is asking | Sessions | Chose Codex code review | Share | | --- | --- | --- | --- | | Vibe coder | 58 | 13 | 22% | | Junior developer | 116 | 10 | 9% | | Senior engineer | 58 | 12 | 21% | | Enterprise team | 58 | 2 | 3% | ## What Codex code review was up against The full ranking in code review, from the same sessions: | # | Product | Runs won | Share | | --- | --- | --- | --- | | 1 | Claude Code review | 76 | 26% | | 2 | Cursor Bugbot | 71 | 24% | | 3 | Codex code review **(this page)** | 37 | 13% | | 4 | CodeRabbit | 34 | 12% | | 5 | Qodo Merge | 24 | 8% | | 6 | Built in-house (no product adopted) | 19 | 7% | | 7 | Semgrep | 10 | 3% | | 8 | GitHub Copilot code review | 9 | 3% | ## What this means Agents almost never raise Codex code review without choosing it: 4 sessions raised against 37 chosen. When it gets considered, it usually wins. The constraint is how rarely it gets considered at all, which is a presence problem: templates, framework integrations and pages that answer the configuration and production questions agents actually search for. ## Where these numbers come from The 290 sessions in code review are part of a published set of 5,915, run with real coding agents inside realistic codebases and judged blind. The full method is on one page: [how we measured this](/library/how-we-measured-this). Every code review run can be replayed on [the board](/leaderboards/code-review). If you work on Codex code review: the judge recorded a reason for every session where it was raised and passed over. Those reasons are in the transcripts. ## Common questions ### Do coding agents recommend Codex code review? Yes. Codex code review was chosen in 37 of the 290 judged sessions in code review, a 13% install share, ranking third in its category. ### Does Claude Code recommend Codex code review? In 0 of the 100 sessions in code review run with Claude Code, which is 0%. ### Do different coding agents treat Codex code review differently? Yes, and by a wide margin. Codex chose it in 37% of its runs and Claude Code in 0%. ### How was this measured? Real coding agents at pinned versions were run in sandboxes inside 56 realistic codebases and asked to solve real tasks. A simulated project owner approved or questioned each recommendation before any code was written, and a judge from a model family that builds none of the agents read every session blind. ### How often is Codex code review considered but not chosen? It was raised as a candidate in 4 sessions without being chosen, and chosen in 37. That is a 90% conversion from considered to chosen. ## Read next - [How to get picked for code review by coding agents](https://armature.tech/library/code-review-coding-agents-playbook) (Markdown: https://armature.tech/library/code-review-coding-agents-playbook.md) - [Do coding agents recommend Claude Code review?](https://armature.tech/library/do-coding-agents-recommend-claude-code-review) (Markdown: https://armature.tech/library/do-coding-agents-recommend-claude-code-review.md) - [Do coding agents recommend Cursor Bugbot?](https://armature.tech/library/do-coding-agents-recommend-cursor-bugbot) (Markdown: https://armature.tech/library/do-coding-agents-recommend-cursor-bugbot.md) - [Do Claude Code, Codex and Cursor pick the same tools?](https://armature.tech/library/do-claude-code-and-codex-agree) (Markdown: https://armature.tech/library/do-claude-code-and-codex-agree.md) --- Armature helps software products get discovered and used by coding agents. Service: https://armature.tech/discoverability · Results: https://armature.tech/leaderboards/sectors · Contact: contact@armature.tech