kitio.aiOpenAI Codex vs Hermes IDE
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Hermes IDE is completely free, while OpenAI Codex is freemium.
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
- Parallel coding agents
- Branch per task
- Agent inbox
- Per-turn diffs and restore
- Custom agent commands
| Feature | OpenAI Codex | Hermes IDE |
|---|---|---|
| Best for | OpenAI's coding agent in the cloud, CLI, IDE and desktop app | Desktop console for running many coding agents side by side |
| Category | Coding | Coding |
| Pricing model | Freemium | Free |
| Starting price | $8/mo | Free |
| Free plan | Yes | Yes, fully free |
| Made by | OpenAI | Hermes IDE |
| Based in | United States | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
|
|
Pricing compared
Hermes IDE is completely free, while OpenAI Codex is freemium.
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
Hermes IDE
- Works with agents from any vendor
- Keeps each task isolated on a branch
- Free to use
- Windows support is best-effort
- BSL license limits some commercial reuse
- You still pay for each agent's own plan
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 Hermes IDE if you want:
- Works with agents from any vendor
- Keeps each task isolated on a branch
- Free to use
Watch out: windows support is best-effort.
OpenAI Codex vs Hermes IDE FAQ
What is the difference between OpenAI Codex and Hermes IDE?
OpenAI Codex: OpenAI's coding agent in the cloud, CLI, IDE and desktop app. Hermes IDE: Desktop console for running many coding agents side by side. Both are coding tools.
Is OpenAI Codex or Hermes IDE cheaper?
Hermes IDE is completely free, while OpenAI Codex is freemium.
Do OpenAI Codex and Hermes IDE have free plans?
OpenAI Codex: Yes. Hermes IDE: Yes, fully free.
Who makes OpenAI Codex?
OpenAI Codex is made by OpenAI, based in United States.
Who makes Hermes IDE?
Hermes IDE is made by Hermes IDE.
Which should I choose, OpenAI Codex or Hermes IDE?
Choose OpenAI Codex if you value included in chatgpt plans and runs many tasks in parallel. Choose Hermes IDE if you value works with agents from any vendor and keeps each task isolated on a branch.