Anthropic: Claude Opus 4.1 vs Anthropic: Claude Sonnet 4.5
Side-by-side model comparison based on OpenRouter API data.
| Spec | Anthropic: Claude Opus 4.1 | Anthropic: Claude Sonnet 4.5 |
|---|---|---|
| Provider | Anthropic | Anthropic |
| Context Length | 200K | 1M |
| Max Output | 32K | 64K |
| Input Price/1M | $15 | $3.00 |
| Output Price/1M | $75 | $15 |
| Cache Read/1M | $1.50 | $0.30 |
| Cache Write/1M | $19 | $3.75 |
| Input Modalities | Image + Text + File | Text + Image + File |
| Output Modalities | Text | Text |
| Tokenizer | Claude | Claude |
| Moderated | Yes | No |