Claude Opus 4.5 is the newer model, released after Kimi K2 0905.
| Spec | Claude Opus 4.5 | Kimi K2 0905 |
|---|---|---|
| Input price | — | $0.6/M tokens |
| Output price | — | $2.5/M tokens |
| Context window | — | 262K tokens |
| Released | Nov 2025 | Sep 2025 |
Not enough votes to call it. On the specs, Claude Opus 4.5 has the edge: newer, major provider backing.
Claude Opus 4.5 uses 5.1x more hedging
Claude Opus 4.5 is the newer model, released after Kimi K2 0905.
| Spec | Claude Opus 4.5 | Kimi K2 0905 |
|---|---|---|
| Input price | — | $0.6/M tokens |
| Output price | — | $2.5/M tokens |
| Context window | — | 262K tokens |
| Released | Nov 2025 | Sep 2025 |
Not enough votes to call it. On the specs, Claude Opus 4.5 has the edge: newer, major provider backing.
Claude Opus 4.5 uses 5.1x more hedging