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OpenAI Codex vs v0
A factual side-by-side comparison of OpenAI Codex and v0. We compare pricing, categories, free tiers and official websites — no invented scores.
Updated 2026-10-22
Quick take
OpenAI Codex is Paid; v0 is Freemium. If you want to start free, check the free or freemium option first; otherwise compare the categories and taglines below.
| Pricing | Paid | Freemium |
|---|---|---|
| Categories | Coding | AI Design / Coding |
| Best for | OpenAI's cloud coding agent | Vercel's conversational UI generator |
| Free tier | No — paid only | Yes — free or freemium |
| Website | openai.com | v0.dev |