Best OpenAI Codex Alternatives for Code Review
30 AI tools that can replace OpenAI Codex for reviewing code, ranked by how closely they match. The percentage is a match score, not a popularity score.
Replacing: OpenAI Codex — A dedicated coding agent that writes and runs code for youInput: text, code · Output: code
1
84%Strong alternative
00
How the score adds up
Score set by our editors after reviewing both products; the overlap below is what they weighed.
Shared goals 1 of the 2 we tag OpenAI Codex for
Code Review
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
2
Qodo's Rules System lets you define coding standards once—then those standards evolve alongside your codebase
Input: code · Output: text, code
Free planFrom $30/mo
82%Strong alternative
00
How the score adds up
Score set by our editors after reviewing both products; the overlap below is what they weighed.
Shared goals 2 of the 2 we tag OpenAI Codex for
CodingCode Review
Also tagged for
Software Testing
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
3
Devin Review is the fastest way to truly understand code—especially when it changes
Input: code, web pages · Output: text
Free planFrom $500/mo
78%Strong alternative
00
How the score adds up
Score set by our editors after reviewing both products; the overlap below is what they weighed.
Shared goals 1 of the 2 we tag OpenAI Codex for
Code Review
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
4
AI code reviewer that never takes a day off
Input: code · Output: text, code
Free planFrom $12/mo
76%Strong alternative
00
How the score adds up
Score set by our editors after reviewing both products; the overlap below is what they weighed.
Shared goals 1 of the 2 we tag OpenAI Codex for
Code Review
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
5
Your AI pair programmer that actually knows the codebase
Pair programmer in your editor with agent and review modes; from $4
Input: text, code · Output: code
Free planFrom $4/mo
62%Partial replacement — covers the main need with gaps · same core category as OpenAI Codex
00
How the score adds up
Score set by our editors after reviewing both products; the overlap below is what they weighed.
Shared goals 2 of the 2 we tag OpenAI Codex for
CodingCode Review
Also tagged for
AI Agents
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
6
75%Strong alternative
00
How the score adds up
Score set by our editors after reviewing both products; the overlap below is what they weighed.
Shared goals 1 of the 2 we tag OpenAI Codex for
Code Review
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
7
AI that writes tests so you don't have to avoid them
Input: code · Output: text, code
Free planFrom $19/mo
70%Partial replacement — covers the main need with gaps
00
How the score adds up
Score set by our editors after reviewing both products; the overlap below is what they weighed.
Shared goals 2 of the 2 we tag OpenAI Codex for
CodingCode Review
Also tagged for
Software Testing
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
8
Claude Code Security remains in research preview—waitlist access only
Input: code · Output: text, code
Free planFrom $17/mo
66%Partial replacement — covers the main need with gaps
00
How the score adds up
Score set by our editors after reviewing both products; the overlap below is what they weighed.
Shared goals 1 of the 2 we tag OpenAI Codex for
Code Review
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
9
Graphite is an AI code review platform for teams that work on GitHub.
Input: code · Output: text, code
Free planFrom $20/moBrowser extensionTeams
60%Partial replacement — covers the main need with gaps
00
How the score adds up
Score set by our editors after reviewing both products; the overlap below is what they weighed.
Shared goals 1 of the 2 we tag OpenAI Codex for
Code Review
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
10
Code editor that actually understands your codebase
Code editor built around understanding your whole codebase; from $20
Input: text, code · Output: code
Free planFrom $20/mo
65%Partial replacement — covers the main need with gaps · same core category as OpenAI Codex
00
How the score adds up
Score set by our editors after reviewing both products; the overlap below is what they weighed.
Shared goals 2 of the 2 we tag OpenAI Codex for
CodingCode Review
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
11
64%Partial replacement — covers the main need with gaps
00
How the score adds up
Score set by our editors after reviewing both products; the overlap below is what they weighed.
Shared goals 1 of the 2 we tag OpenAI Codex for
Code Review
Also tagged for
Software Development
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
12
You'll need developers who actually understand the security feedback DryRun Security generates
Input: code · Output: text
Free plan
64%Partial replacement — covers the main need with gaps
00
How the score adds up
Score set by our editors after reviewing both products; the overlap below is what they weighed.
Shared goals 1 of the 2 we tag OpenAI Codex for
Code Review
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
13
CodeThreat's AI agents learn your codebase
Input: code · Output: text
Free planFrom $39/mo
62%Partial replacement — covers the main need with gaps
00
How the score adds up
Score set by our editors after reviewing both products; the overlap below is what they weighed.
Shared goals 1 of the 2 we tag OpenAI Codex for
Code Review
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
14
Most code review tools scan diffs—then stop
Input: code · Output: text
Free planFrom $29/mo
62%Partial replacement — covers the main need with gaps
00
How the score adds up
Score set by our editors after reviewing both products; the overlap below is what they weighed.
Shared goals 1 of the 2 we tag OpenAI Codex for
Code Review
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
15
Verdent AI operates as a multi-agent coding system where several AI assistants work in parallel rather than sequentially
Several agents work in parallel; VS Code and JetBrains integrations
Input: text, code · Output: code, apps
Free planFrom $5/mo
59%Limited overlap · same core category as OpenAI Codex
00
How the score adds up
- Offers Code Review as a secondary capability42/70
- Shares OpenAI Codex's other goals10/10
- Feature description similarity7/20
Capped below the editor-ranked picks above it.
Shared goals 2 of the 2 we tag OpenAI Codex for
CodingCode Review
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
16
AWS coding assistant formerly known as CodeWhisperer
AWS coding assistant, formerly known as CodeWhisperer; free tier and trial
Input: text, code · Output: code
Free planFrom $19/mo
57%Limited overlap · same core category as OpenAI Codex
00
How the score adds up
- Offers Code Review as a secondary capability42/70
- Shares OpenAI Codex's other goals10/10
- Feature description similarity5/20
Capped below the editor-ranked picks above it.
Shared goals 2 of the 2 we tag OpenAI Codex for
CodingCode Review
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
17
Code review automation that catches what human reviewers miss
Input: text · Output: code, apps
Free planFrom $7.99/moTeams
59%Limited overlap
00
How the score adds up
- Built for Code Review (its core category)70/70
- Shares OpenAI Codex's other goals4/10
- Feature description similarity2/20
Capped below the editor-ranked picks above it.
Shared goals 1 of the 2 we tag OpenAI Codex for
Code Review
Also tagged for
Workflow Automation
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
18
Every plan tier hits usage limits
Anthropic's coding agent with review features; free tier, from $17
Input: text, code · Output: code
Free planFrom $17/mo
56%Limited overlap · same core category as OpenAI Codex
00
How the score adds up
- Offers Code Review as a secondary capability42/70
- Shares OpenAI Codex's other goals10/10
- Feature description similarity4/20
Capped below the editor-ranked picks above it.
Shared goals 2 of the 2 we tag OpenAI Codex for
CodingCode Review
Also tagged for
AI Agents
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
19
AI that codes independently
Codes independently as an autonomous agent; paid, with a free trial
Input: text, code · Output: code
Free trial
58%Limited overlap
00
How the score adds up
- Offers Code Review as a secondary capability42/70
- Shares OpenAI Codex's other goals8/10
- Feature description similarity9/20
Capped below the editor-ranked picks above it.
Shared goals 2 of the 2 we tag OpenAI Codex for
CodingCode Review
Also tagged for
AI Agents
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
20
LinearB gitStream is a pull request automation and AI code review product from LinearB.
Input: code · Output: text
Free trialFrom $29/moTeams
59%Limited overlap
00
How the score adds up
- Built for Code Review (its core category)70/70
- Shares OpenAI Codex's other goals4/10
- Feature description similarity5/20
Capped below the editor-ranked picks above it.
Shared goals 1 of the 2 we tag OpenAI Codex for
Code Review
Also tagged for
Software Development
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
21
Korbit is an AI code reviewer that works directly inside pull requests on GitHub, GitLab and Bitbucket.
Input: code · Output: text
Free trialFrom $12/moTeams
59%Limited overlap
00
How the score adds up
- Built for Code Review (its core category)70/70
- Shares OpenAI Codex's other goals4/10
- Feature description similarity3/20
Capped below the editor-ranked picks above it.
Shared goals 1 of the 2 we tag OpenAI Codex for
Code Review
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
22
Ellipsis is a managed cloud platform for running coding agents.
Input: text, code · Output: code
From $5,000/moAPITeams
59%Limited overlap · same core category as OpenAI Codex
00
How the score adds up
- Offers Code Review as a secondary capability42/70
- Shares OpenAI Codex's other goals10/10
- Feature description similarity10/20
Capped below the editor-ranked picks above it.
Shared goals 2 of the 2 we tag OpenAI Codex for
CodingCode Review
Also tagged for
AI Agents
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
23
OpenHands is an open-source, model-agnostic platform for running coding agents in the cloud.
Input: text, code · Output: code
Free planTeams
59%Limited overlap · same core category as OpenAI Codex
00
How the score adds up
- Offers Code Review as a secondary capability42/70
- Shares OpenAI Codex's other goals10/10
- Feature description similarity7/20
Capped below the editor-ranked picks above it.
Shared goals 2 of the 2 we tag OpenAI Codex for
CodingCode Review
Also tagged for
AI Agents
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
24
Semgrep Assistant, now documented as Semgrep Multimodal, is the AI layer of the Semgrep application security platform.
Input: code · Output: text, code
APITeams
59%Limited overlap
00
How the score adds up
- Built for Code Review (its core category)70/70
- Shares OpenAI Codex's other goals4/10
- Feature description similarity3/20
Capped below the editor-ranked picks above it.
Shared goals 1 of the 2 we tag OpenAI Codex for
Code Review
Also tagged for
Software Development
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
25
It reviews vulnerabilities found in code and proposes automated fixes directly in GitHub, so developers can write secure code at scale instead of leaving security tickets in a backlog.
Input: code · Output: code
Free trialFrom $30/moTeams
59%Limited overlap
00
How the score adds up
- Built for Code Review (its core category)70/70
- Shares OpenAI Codex's other goals4/10
- Feature description similarity3/20
Capped below the editor-ranked picks above it.
Shared goals 1 of the 2 we tag OpenAI Codex for
Code Review
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
26
Snyk Code is a static application security testing product that scans the source code a team writes, flags vulnerabilities as they appear and proposes fixes that can be applied automatically.
Input: code · Output: text, code
Free planFrom $25/moTeams
59%Limited overlap
00
How the score adds up
- Built for Code Review (its core category)70/70
- Shares OpenAI Codex's other goals4/10
- Feature description similarity6/20
Capped below the editor-ranked picks above it.
Shared goals 1 of the 2 we tag OpenAI Codex for
Code Review
Also tagged for
Software Development
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
27
Factory is an agent-native software development platform built around autonomous coding agents called Droids.
Input: text, code · Output: code
From $20/moAPITeams
59%Limited overlap · same core category as OpenAI Codex
00
How the score adds up
- Offers Code Review as a secondary capability42/70
- Shares OpenAI Codex's other goals10/10
- Feature description similarity7/20
Capped below the editor-ranked picks above it.
Shared goals 2 of the 2 we tag OpenAI Codex for
CodingCode Review
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
28
Cursor Bugbot is an AI code review service from the makers of the Cursor editor.
Input: code · Output: text, code
Free trialFrom $20/moTeams
59%Limited overlap
00
How the score adds up
- Built for Code Review (its core category)70/70
- Shares OpenAI Codex's other goals4/10
- Feature description similarity5/20
Capped below the editor-ranked picks above it.
Shared goals 1 of the 2 we tag OpenAI Codex for
Code Review
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
29
Continue is an open-source AI coding agent that was built by a community of developers and has since been acquired by Cursor.
Community-built open-source coding agent that is free to use
Input: text, code · Output: code
Free plan
55%Limited overlap · same core category as OpenAI Codex
00
How the score adds up
- Offers Code Review as a secondary capability42/70
- Shares OpenAI Codex's other goals10/10
- Feature description similarity3/20
Capped below the editor-ranked picks above it.
Shared goals 2 of the 2 we tag OpenAI Codex for
CodingCode Review
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
30
Augment Code is an agentic software development company whose Cosmos platform runs software agents across the development lifecycle.
Input: text, code · Output: code
From $20/moTeams
58%Limited overlap · same core category as OpenAI Codex
00
How the score adds up
- Offers Code Review as a secondary capability42/70
- Shares OpenAI Codex's other goals10/10
- Feature description similarity6/20
Capped below the editor-ranked picks above it.
Shared goals 2 of the 2 we tag OpenAI Codex for
CodingCode Review
Also tagged for
Software TestingAI Agents
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
Can it really replace OpenAI Codex for reviewing code? Vote on each alternative — no account needed. Votes gently reorder the list; they never change the match score.
Missing an alternative for reviewing code? Suggest it
At a glance: top OpenAI Codex alternatives for Code Review
| Tool | Match | Input | Output | Pricing | Free plan | Rating | Category |
|---|---|---|---|---|---|---|---|
| CodeRabbit | 84% | code | text, code | From $24/mo | Yes | — | AI Code Review |
| Qodo (Formerly Codium) | 82% | code | text, code | From $30/mo | Yes | — | AI Code Review |
| Devin Review | 78% | code, web pages | text | From $500/mo | Yes | — | AI Code Review |
| Sourcery | 76% | code | text, code | From $12/mo | Yes | — | AI Code Review |
| GitHub Copilot | 62% | text, code | code | From $4/mo | Yes | — | AI Coding Assistant |
| Kilo Code Reviewer | 75% | code | text | From $15/mo | Yes | — | AI Code Review |
Frequently asked
What is the best OpenAI Codex alternative for reviewing code?
CodeRabbit (84% match) is the closest alternative to OpenAI Codex for reviewing code: Automated code review that matters. Qodo (Formerly Codium) (82% match) and Devin Review (78% match) come next.
Is there a free alternative to OpenAI Codex for reviewing code?
Yes. 21 of the 30 ranked alternatives have a free plan or free tier, including CodeRabbit, Qodo (Formerly Codium), Devin Review.
How is the match percentage calculated?
It measures how much of OpenAI Codex's job a tool can take over for reviewing code: shared core category, how many of the same use cases it covers and how similar its feature set is. Popularity and ratings never change the percentage; they only break ties in the order. Lists are recomputed nightly and reviewed by editors for the most-visited tools.
How this list is ranked
The match score measures how much of OpenAI Codex's job each tool can take over when the goal is reviewing code: shared core category, how many of the same use cases it covers, and how similar its feature set is. Popularity and ratings do not change the score; they only break ties in the order.
Lists are recomputed nightly from the live catalog and reviewed by our editors for the most-visited tools. Sponsored placements are marked and sit outside the ranking.