kitio.aiOpenAI Codex vs Bunzz
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. OpenAI Codex starts at $8/mo and Bunzz 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
- AI smart contract audits
- AI-generated contract docs
- Reviewed contract library
- GUI deployment on EVM chains
- Contract management dashboard
| Feature | OpenAI Codex | Bunzz |
|---|---|---|
| Best for | OpenAI's coding agent in the cloud, CLI, IDE and desktop app | Smart contract platform with AI security audits and AI-written docs |
| Category | Coding | Coding |
| Pricing model | Freemium | Paid |
| Starting price | $8/mo | See pricing page |
| Free plan | Yes | No |
| Made by | OpenAI | Bunzz |
| Based in | United States | Japan |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
OpenAI Codex starts at $8/mo and Bunzz 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
Bunzz
- Audit reports within about two days
- Cheaper than a traditional audit
- Deploy contracts without the command line
- Audits start around $1,990 per report
- Only useful for EVM smart contracts
- AI audits may miss logic-level flaws
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 Bunzz if you want:
- Audit reports within about two days
- Cheaper than a traditional audit
- Deploy contracts without the command line
Watch out: audits start around $1,990 per report.
OpenAI Codex vs Bunzz FAQ
What is the difference between OpenAI Codex and Bunzz?
OpenAI Codex: OpenAI's coding agent in the cloud, CLI, IDE and desktop app. Bunzz: Smart contract platform with AI security audits and AI-written docs. Both are coding tools.
Is OpenAI Codex or Bunzz cheaper?
OpenAI Codex starts at $8/mo and Bunzz starts at See pricing page. Check both pricing pages for current plans.
Do OpenAI Codex and Bunzz have free plans?
OpenAI Codex: Yes. Bunzz: No.
Who makes OpenAI Codex?
OpenAI Codex is made by OpenAI, based in United States.
Who makes Bunzz?
Bunzz is made by Bunzz, based in Japan.
Which should I choose, OpenAI Codex or Bunzz?
Choose OpenAI Codex if you value included in chatgpt plans and runs many tasks in parallel. Choose Bunzz if you value audit reports within about two days and cheaper than a traditional audit.