Codex Security brings OpenAI's coding agent to security review, and for teams already working in Codex it is an easy tool to try. Some teams find they also need to test the running application, scan dependencies and secrets, or know what a scan will cost before it runs. If you are weighing your options, these are the five Codex Security alternatives worth a close look:
- AISafe Labs
- Claude Security
- Aikido
- Vercel Security Review
- GitHub Code Security (CodeQL)
This comparison was published on November 11, 2026 and reflects the tools as we tested them then. Pricing and features change often, so check each vendor’s current pages for the latest.
What is Codex Security?
Codex Security is OpenAI's code security agent. It scans connected GitHub repositories as a hosted service in Codex, and a plugin, an open-source CLI and an SDK let you run the same scans locally or in CI. For each finding it can suggest a patch or open a draft pull request, and its reports include a proof of concept or reproducer when that is practical.
Codex Security also reviews pull requests on the Pro, Business, Edu and Enterprise plans, and exports findings to Jira, Linear and GitHub Issues. In our testing it was strong on authorization logic, such as who may sign a document and in what order. There is no free plan, but eligible accounts get $500 in free scanning credits. After that, cloud scans are billed by the model tokens they use, outside the Codex usage included in your plan.
Why organizations look for Codex Security alternatives
Codex Security does a lot well, but teams usually start looking elsewhere for one of three reasons.
1. It reviews source code, not the running application. Codex Security has no black-box pentesting, and its custom validation can only partly test a running app. It monitors new commits rather than live targets. Teams that want findings confirmed against the deployed application, or want to know when a fixed issue comes back in production, need another tool for that part of the job (full comparison).
2. The cost of a scan is hard to predict. Cloud scans are billed by the tokens they use, at your plan's rates and outside the included Codex allowance, and OpenAI does not publish what a typical scan costs. The $500 of free scanning credits helps you get started, but budgeting for regular full scans of a large codebase takes some trial and error.
3. It covers application code only. Codex Security imports Dependabot alerts but does not detect vulnerable dependencies itself, secrets are not a documented scan type, and its docs say it scans application code, so infrastructure as code is out of scope. Most teams end up running separate scanners alongside it, since it is one feature of Codex rather than a dedicated security platform.
Top 5 Codex Security alternatives
Here is how the leading alternatives compare, starting with the one we build.
#1 AISafe Labs
AISafe Labs is an application security platform that uses AI agents to test your code and your running application the way an attacker would. It runs code audits, black-box and white-box pentests, pull request reviews and continuous monitoring from one place, and its free plan includes a full SAST suite.
Like Codex Security, AISafe Labs uses AI agents to read your code. Its agents build a model of your codebase and trace user input from where it enters to where it reaches a sensitive operation, which is how they find broken access control between teams and business-logic errors. The difference is what happens around that audit: a separate triage pass confirms each finding, merges duplicates that share a root cause and shows its reasoning, and pentests then prove issues against your live application. Our AISafe Labs vs Codex Security comparison runs both on the same codebase, if you want to see them side by side.
Key features
- Code Audit: AI agents review the whole repository and report evidence-backed findings with exact code locations, the path user input takes, and remediation guidance.
- Code Scan, free: SAST, AI SAST, dependency scanning, secrets detection, licence risk and IaC scanning on the free Basic plan, with no card required.
- Black-box and white-box pentests: agents probe your live application over HTTP and in a browser, and white-box tests combine source access with live confirmation, so findings come with evidence you can replay.
- Pull request security review: every pull request is reviewed for security defects, using what earlier audits learned about the project.
- Endpoint monitoring: AISafe re-runs the proof of each fixed finding against your live application on a schedule and alerts you when a fix regresses.
- Fix verification (beta): check a patched source revision against the original finding before you deploy it.
- Built for coding agents: findings, remediation guidance and fix verification are available through the AISafe API, so your own coding agent can read a finding, write the patch and start the verification itself.
- Fits your workflow: export findings to Jira or Linear, get alerts in Slack or Teams, and run AISafe on your own infrastructure if you need to.
Why AISafe Labs stands out as a Codex Security alternative
- It tests the live application. Black-box and white-box pentests confirm issues against your running application with a working proof of concept, and endpoint monitoring keeps checking that fixed issues stay fixed.
- It is a dedicated security platform. Dependency scanning, secrets detection and IaC scanning come with the free Basic plan, next to code audits and pentests, so you do not need to assemble separate scanners around it.
- You see the price before you start. The Basic plan is free, and the price of a code audit is shown before it runs, so you can budget for regular audits without estimating token usage.
Pricing
The Basic plan is free and includes the full SAST suite. Pro starts at $40 a month and includes the same number of credits, which pay for code audits, pentests and continuous work; the price of a code audit depends on the size of the codebase and is shown before you start.
Ideal for: Teams that want more than a code reviewer: engineering and security teams that need to find logic and access-control flaws, test the running application, and close the loop from finding to verified fix, without moving to an enterprise contract.
#2 Claude Security
Claude Security is Anthropic's set of code security tools. The /security-review command in Claude Code makes a single pass over a branch, and the Claude Security plugin runs a multi-agent scan of a whole codebase or a diff and writes reviewed patches. A hosted service, in beta for Claude Enterprise, rescans connected repositories as code changes.
Key features
- Multi-agent scans of a whole repository, with findings checked by independent verifier agents
- Reviewed patches, and Claude can open a pull request with the fix
- On-demand scans of a pull request diff through the plugin
- A written attack path for each finding
- The plugin runs locally, while the models stay hosted
- Webhooks and an API for findings in the Enterprise beta
Ideal for: Teams that already pay for Claude and want security review inside that subscription. Anthropic's docs suggest keeping your dependency scanners alongside it.
#3 Aikido
Aikido is an all-in-one security platform that covers code, dependencies, cloud and runtime from one dashboard. AI SAST is included on the free plan, and AI Code Analysis and AI pentests are billed in credits.
Key features
- SAST, dependency, secrets, IaC and container scanning
- AutoFix pull requests, with 10 a month on the free plan
- Cloud posture management for AWS, GCP and Azure
- Zen, an in-app firewall that blocks attacks at runtime
- AI Code Analysis and AI pentests, paid in credits
- Jira and Linear sync from the Basic plan
Ideal for: Teams that want one vendor for code, cloud and runtime security, and are comfortable triaging a high volume of findings.
#4 Vercel Security Review
Vercel Security Review is a Vercel Agent feature, in public beta on the Pro and Enterprise plans. It reviews the code changed in each push to a connected GitHub repository and reports vulnerabilities to a dashboard, GitHub checks and pull request comments, and Vercel Agent can then open a pull request with a fix.
Key features
- A review of every push, with comments on private pull requests
- A full source review on the first run, then reviews of changes
- Flags credential exposure in the changed code
- A description of how each issue could be exploited
- Fix pull requests opened by Vercel Agent
- Billed by the tokens each review uses, on top of Pro seats at $20 per developer a month
Ideal for: Teams that deploy on Vercel and want security review inside the workflow they already use, with findings tied to each change.
#5 GitHub Code Security (CodeQL)
GitHub Code Security bundles CodeQL, GitHub's semantic code analysis engine, with Copilot Autofix and an AI scan of pull requests. Secret scanning is sold separately as Secret Protection, and Dependabot alerts are available on every repository.
Key features
- CodeQL dataflow analysis, with queries you can extend
- Copilot Autofix suggestions on alerts
- AI scan of pull requests, generally available since October 2026
- Free for public repositories
- Self-hosting through GitHub Enterprise Server
Ideal for: Teams already on GitHub that want code scanning built into pull requests, especially open-source projects, which get it for free.
How to choose the right Codex Security alternative for you
The right choice depends on what you need your security tooling to catch and how your team works. When you compare options, check:
- Which vulnerabilities matter most. If access control, authentication and business logic are your biggest risks, look for a tool that reasons about your application and shows how it validated each finding.
- Whether you need to test the running application. Code review and live testing find different problems. Decide whether you need pentests, and whether the tool can confirm findings against your deployed app.
- What else you need to scan. Check whether dependencies, secrets and infrastructure as code are covered, or whether you will run separate scanners for them.
- How fixes get done. Look at whether the tool writes patches, guides your own coding agent, and verifies that a fix works.
- What it costs as you grow. Compare billing models: per seat, per committer, per token or per credit, and whether you can see the cost of a scan before it runs.
Make the switch from Codex Security to AISafe Labs
Codex Security is a convenient way to add security review to Codex. As your application grows, AISafe Labs helps you go further: AI agents that find logic and access-control flaws, pentests that prove them on your live application, and fix verification that closes the loop.
You can start on the free Basic plan, which includes the full SAST suite, and run your first code audit in minutes. Start for free or see the full AISafe Labs vs Codex Security comparison.
