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Codex vs DeepSeek
A factual side-by-side comparison of Codex and DeepSeek. We compare pricing, categories, free tiers and official websites — no invented scores.
Updated 2026-10-22
Quick take
Codex is Freemium; DeepSeek is Free. If you want to start free, check the free or freemium option first; otherwise compare the categories and taglines below.
| Pricing | Freemium | Free |
|---|---|---|
| Categories | Coding / AI Agents / AI APIs | AI Chat / Coding |
| Best for | Codex — AI Coding and code generation | China's open-source value king with frontier reasoning |
| Free tier | Yes — free or freemium | Yes — free or freemium |
| Website | chatgpt.com | chat.deepseek.com |