kitio.aiOpenAI Codex vs Regression Games
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. OpenAI Codex starts at $8/mo and Regression Games 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
- Unity SDK
- Bots for QA and NPCs
- Replay and validation
- CI/CD integration
- Live reloading
| Feature | OpenAI Codex | Regression Games |
|---|---|---|
| Best for | OpenAI's coding agent in the cloud, CLI, IDE and desktop app | AI bot platform for Unity games, QA testing and NPCs |
| Category | Coding | Coding |
| Pricing model | Freemium | Paid |
| Starting price | $8/mo | See pricing page |
| Free plan | Yes | No |
| Made by | OpenAI | Regression Games |
| 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 Regression Games 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
Regression Games
- Targets Unity developers directly
- Bots can run in CI pipelines
- Live reloading speeds iteration
- Only for Unity projects
- Pricing is not shown; demo booking
- Marketplace is not released yet
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 Regression Games if you want:
- Targets Unity developers directly
- Bots can run in CI pipelines
- Live reloading speeds iteration
Watch out: only for unity projects.
OpenAI Codex vs Regression Games FAQ
What is the difference between OpenAI Codex and Regression Games?
OpenAI Codex: OpenAI's coding agent in the cloud, CLI, IDE and desktop app. Regression Games: AI bot platform for Unity games, QA testing and NPCs. Both are coding tools.
Is OpenAI Codex or Regression Games cheaper?
OpenAI Codex starts at $8/mo and Regression Games starts at See pricing page. Check both pricing pages for current plans.
Do OpenAI Codex and Regression Games have free plans?
OpenAI Codex: Yes. Regression Games: No.
Who makes OpenAI Codex?
OpenAI Codex is made by OpenAI, based in United States.
Who makes Regression Games?
Regression Games is made by Regression Games.
Which should I choose, OpenAI Codex or Regression Games?
Choose OpenAI Codex if you value included in chatgpt plans and runs many tasks in parallel. Choose Regression Games if you value targets unity developers directly and bots can run in ci pipelines.