Claude Opus 4.5 is the newer model, released after Mercury.
| Spec | Claude Opus 4.5 | Mercury |
|---|---|---|
| Input price | — | $10/M tokens |
| Output price | — | $10/M tokens |
| Context window | — | 32K tokens |
| Released | Nov 2025 | Jun 2025 |
Not enough votes to call it. On the specs, Claude Opus 4.5 has the edge: bigger model tier, newer, major provider backing.
Claude Opus 4.5 uses 3.6x more emoji
Claude Opus 4.5 is the newer model, released after Mercury.
| Spec | Claude Opus 4.5 | Mercury |
|---|---|---|
| Input price | — | $10/M tokens |
| Output price | — | $10/M tokens |
| Context window | — | 32K tokens |
| Released | Nov 2025 | Jun 2025 |
Not enough votes to call it. On the specs, Claude Opus 4.5 has the edge: bigger model tier, newer, major provider backing.
Claude Opus 4.5 uses 3.6x more emoji