GPT-5 Codex is the newer model, released after Mercury.
| Spec | GPT-5 Codex | Mercury |
|---|---|---|
| Input price | — | $10/M tokens |
| Output price | — | $10/M tokens |
| Context window | — | 32K tokens |
| Released | Sep 2025 | Jun 2025 |
Not enough votes to call it. On the specs, GPT-5 Codex has the edge: bigger model tier, newer, major provider backing.
GPT-5 Codex wins Image Generation and Web Design.
GPT-5 Codex uses 3.4x more emoji
GPT-5 Codex is the newer model, released after Mercury.
| Spec | GPT-5 Codex | Mercury |
|---|---|---|
| Input price | — | $10/M tokens |
| Output price | — | $10/M tokens |
| Context window | — | 32K tokens |
| Released | Sep 2025 | Jun 2025 |
Not enough votes to call it. On the specs, GPT-5 Codex has the edge: bigger model tier, newer, major provider backing.
GPT-5 Codex wins Image Generation and Web Design.
GPT-5 Codex uses 3.4x more emoji