OpenAI Codex vs v0
Which is better in 2026? Five scores, side by side.
OpenAI Codex is the better app overall, scoring 8.7 to 8.2. OpenAI Codex wins on 4 of the 5 scores, v0 on 1.
ChatGPT subscribers who want a capable coding agent at no extra cost
Builders who want web apps that go live on Vercel
Score by score
The details
| Feature | OpenAI Codex | v0 |
|---|---|---|
| Category | Developer Tools | Developer Tools |
| Category rank | #8 of 18 | #14 of 18 |
| Developer | OpenAI | Vercel |
| Pricing | Free + paid plans | Free + paid plans |
| Usable for free | Yes | Yes |
| iPhone & iPad | ✓ | ✓ |
| Android | ✓ | — |
| Mac | ✓ | — |
| Windows | ✓ | — |
| Linux | ✓ | — |
| Web | ✓ | ✓ |
Common questions
Is OpenAI Codex better than v0?
OpenAI Codex is the better app overall, scoring 8.7 to 8.2. OpenAI Codex wins on 4 of the 5 scores, v0 on 1.
Which is cheaper, OpenAI Codex or v0?
OpenAI Codex: Included in every ChatGPT plan, even Free; Plus is $20 a month and Pro from $100. v0: Free: 7 messages a day; Plus is $30 per user a month with $30 of credits. On value for money, OpenAI Codex scores higher.
Do OpenAI Codex and v0 work on the same devices?
Only OpenAI Codex runs on Mac, Windows, Linux, Android.
Which is more private, OpenAI Codex or v0?
OpenAI Codex scores higher on privacy (7.0/10). On personal ChatGPT plans, Codex tasks can train OpenAI's models unless you turn off Improve the model for everyone. Business, Enterprise and Edu content isn't used for training by default.
Strengths and weaknesses
OpenAI Codex
- Included even with a free ChatGPT account
- Open-source CLI under the Apache 2.0 licence
- Runs on Mac, Windows and Linux
- Free and Go plans are meant for light tasks only
- Merged ChatGPT desktop app drew complaints of confusion
- Personal-plan tasks can train models unless you opt out
Codex is OpenAI's coding agent, and it now comes with every ChatGPT plan. Use it in the ChatGPT desktop app, the open-source Codex CLI, your IDE or in the cloud, where it can work on several tasks at once and review pull requests on GitHub. You can keep an eye on sessions from the ChatGPT phone app too. July's merge of the Codex app into ChatGPT confused plenty of people, and personal-plan tasks can train models unless you opt out.
Full OpenAI Codex review
v0
- Free plan includes GitHub sync and Vercel deploys
- Vercel doesn't claim the code you generate
- Goes from a prompt to a live site on Vercel
- Free plan stops at 7 messages a day
- Free credits are a one-time $5 for new users
- No Android app
v0 is Vercel's AI app builder. Describe a website or web app, and it writes the code, shows a preview and can put it online on Vercel. Vercel says it doesn't own the code v0 makes, and GitHub sync is included on every plan, even Free. The catch is the limit: the free plan allows 7 messages a day. For steady building you need Plus, which costs $30 a month and includes $30 of credits.
Full v0 review
