GPT-5 Codex is the newer model, released after Grok 3 Thinking.
| Spec | GPT-5 Codex | Grok 3 Thinking |
|---|---|---|
| Context window | — | 128K tokens |
| Released | Sep 2025 | Feb 2025 |
Not enough votes to call it. On the specs, nothing separates them.
GPT-5 Codex uses 14.6x more emoji
GPT-5 Codex is the newer model, released after Grok 3 Thinking.
| Spec | GPT-5 Codex | Grok 3 Thinking |
|---|---|---|
| Context window | — | 128K tokens |
| Released | Sep 2025 | Feb 2025 |
Not enough votes to call it. On the specs, nothing separates them.
GPT-5 Codex uses 14.6x more emoji