kitio.aiOpenAI Codex vs ML.ai
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. OpenAI Codex has the lower starting price: about $8 a month, against $29 for ML.ai.
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
- Automatic model routing
- Scoped task lists
- Diff approval before writes
- Built-in test and lint checks
- Parallel jobs and automations
- App, IDE and CLI
| Feature | OpenAI Codex | ML.ai |
|---|---|---|
| Best for | OpenAI's coding agent in the cloud, CLI, IDE and desktop app | Coding agent that routes each step to a fitting model |
| Category | Coding | Coding |
| Pricing model | Freemium | Paid |
| Starting price | $8/mo | $29/mo |
| Free plan | Yes | No |
| Made by | OpenAI | ML.ai |
| Based in | United States | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
|
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Pricing compared
OpenAI Codex has the lower starting price: about $8 a month, against $29 for ML.ai.
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
2 plans
Team
$29/mo
- Per user
- Pro-level parallel jobs
- Highest-effort models
Enterprise
Contact sales
- Custom annual contract
- Pro-level parallel jobs
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
ML.ai
- Nothing changes without your approval
- No visible token budget to manage
- Runs checks before opening a PR
- Individual plan prices not clearly listed
- Desktop app is macOS first
- Top-effort models need a higher 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 ML.ai if you want:
- Nothing changes without your approval
- No visible token budget to manage
- Runs checks before opening a PR
Watch out: individual plan prices not clearly listed.
OpenAI Codex vs ML.ai FAQ
What is the difference between OpenAI Codex and ML.ai?
OpenAI Codex: OpenAI's coding agent in the cloud, CLI, IDE and desktop app. ML.ai: Coding agent that routes each step to a fitting model. Both are coding tools.
Is OpenAI Codex or ML.ai cheaper?
OpenAI Codex has the lower starting price: about $8 a month, against $29 for ML.ai.
Do OpenAI Codex and ML.ai have free plans?
OpenAI Codex: Yes. ML.ai: No.
Who makes OpenAI Codex?
OpenAI Codex is made by OpenAI, based in United States.
Who makes ML.ai?
ML.ai is made by ML.ai.
Which should I choose, OpenAI Codex or ML.ai?
Choose OpenAI Codex if you value included in chatgpt plans and runs many tasks in parallel. Choose ML.ai if you value nothing changes without your approval and no visible token budget to manage.