Anthropic: Claude Sonnet 4 vs Anthropic: Claude Opus 4.5
Side-by-side model comparison based on OpenRouter API data.
| Spec | Anthropic: Claude Sonnet 4 | Anthropic: Claude Opus 4.5 |
|---|---|---|
| Provider | Anthropic | Anthropic |
| Context Length | 200K | 200K |
| Max Output | 64K | 64K |
| Input Price/1M | $3.00 | $5.00 |
| Output Price/1M | $15 | $25 |
| Cache Read/1M | $0.30 | $0.50 |
| Cache Write/1M | $3.75 | $6.25 |
| Input Modalities | Image + Text + File | File + Image + Text |
| Output Modalities | Text | Text |
| Tokenizer | Claude | Claude |
| Moderated | Yes | Yes |