kitio.aiOpenAI Codex vs Adversa AI
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. OpenAI Codex starts at $8/mo and Adversa AI starts at See pricing page. Check both pricing pages for current plans.
At a glance
Best for
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Cloud coding tasks
- Codex CLI
- IDE extension
- Desktop app
- Automatic PR review
- Coding agent monitoring
- AI detection and response
- LLM and agent red teaming
- MCP security testing
- EU AI Act assessments
| Feature | OpenAI Codex | Adversa AI |
|---|---|---|
| Best for | OpenAI's coding agent in the cloud, CLI, IDE and desktop app | Security monitoring and red teaming for AI coding agents and LLMs |
| Category | Coding | Coding |
| Pricing model | Freemium | Paid |
| Starting price | $8/mo | See pricing page |
| Free plan | Yes | No |
| Made by | OpenAI | Adversa AI |
| Based in | United States | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
OpenAI Codex starts at $8/mo and Adversa AI starts at See pricing page. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
6 plans
Free
Free
- Limited Codex usage
- Via ChatGPT account
Go
$8/mo
- ChatGPT Go plan
- More Codex usage than Free
Plus
$20/mo
- ChatGPT Plus plan
- Codex in CLI, IDE and cloud
Pro
$100/mo
- Starting price; $200 and $500 tiers
- Highest Codex limits
Business
$25/mo
- Per user
- Shared workspace and admin controls
Enterprise
Contact sales
- Enterprise security
- Flexible usage
Prices in USD, checked Oct 28, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
OpenAI Codex
- Included in ChatGPT plans
- Runs many tasks in parallel
- Open-source CLI
- Token-based limits are hard to predict
- Free tier usage is small
Adversa AI
- Focused on AI-specific attack surfaces
- Covers coding agents and MCP
- Publishes open rating methodology
- No public pricing
- Demo required to start
- Aimed at enterprise security teams
Which one should you choose?
Choose OpenAI Codex if you want:
- Included in ChatGPT plans
- Runs many tasks in parallel
- Open-source CLI
Watch out: token-based limits are hard to predict.
Choose Adversa AI if you want:
- Focused on AI-specific attack surfaces
- Covers coding agents and MCP
- Publishes open rating methodology
Watch out: no public pricing.
OpenAI Codex vs Adversa AI FAQ
What is the difference between OpenAI Codex and Adversa AI?
OpenAI Codex: OpenAI's coding agent in the cloud, CLI, IDE and desktop app. Adversa AI: Security monitoring and red teaming for AI coding agents and LLMs. Both are coding tools.
Is OpenAI Codex or Adversa AI cheaper?
OpenAI Codex starts at $8/mo and Adversa AI starts at See pricing page. Check both pricing pages for current plans.
Do OpenAI Codex and Adversa AI have free plans?
OpenAI Codex: Yes. Adversa AI: No.
Who makes OpenAI Codex?
OpenAI Codex is made by OpenAI, based in United States.
Who makes Adversa AI?
Adversa AI is made by Adversa AI.
Which should I choose, OpenAI Codex or Adversa AI?
Choose OpenAI Codex if you value included in chatgpt plans and runs many tasks in parallel. Choose Adversa AI if you value focused on ai-specific attack surfaces and covers coding agents and mcp.