Claude Opus 4.5 is the newer model, released after Claude Haiku 4.5.
| Spec | Claude Haiku 4.5 | Claude Opus 4.5 |
|---|---|---|
| Input price | $1/M tokens | — |
| Output price | $5/M tokens | — |
| Context window | 200K tokens | — |
| Released | Oct 2025 | Nov 2025 |
| SWE-bench Verified | 73.3% | 80.9% |
Not enough votes to call it. On the specs, Claude Opus 4.5 has the edge: bigger model tier, newer.
Claude Haiku 4.5 uses 3.7x more transitions
Claude Opus 4.5 is the newer model, released after Claude Haiku 4.5.
| Spec | Claude Haiku 4.5 | Claude Opus 4.5 |
|---|---|---|
| Input price | $1/M tokens | — |
| Output price | $5/M tokens | — |
| Context window | 200K tokens | — |
| Released | Oct 2025 | Nov 2025 |
| SWE-bench Verified | 73.3% | 80.9% |
Not enough votes to call it. On the specs, Claude Opus 4.5 has the edge: bigger model tier, newer.
Claude Haiku 4.5 uses 3.7x more transitions