R1 is 9.4× cheaper per million tokens (blended). Claude Opus 4.5 has the larger context window (200,000 vs 64,000 tokens, 3.1×). R1 is open-weights; the other is not.
Claude Opus 4.5 vs R1
Live catalog fields. Best-in-row is highlighted.
Claude Opus 4.5
Anthropic · anthropic__claude-opus-4.5
R1open
DeepSeek · deepseek__deepseek-r1
Identity
| Field | anthropic__claude-opus-4.5 | deepseek__deepseek-r1 |
|---|---|---|
| Provider | Anthropic | DeepSeek |
| Slug | anthropic__claude-opus-4.5 | deepseek__deepseek-r1 |
| Status | live | live |
| Open weights | No | Yes |
| License | — | — |
| HuggingFace | — | deepseek-ai/DeepSeek-R1 |
Quality
| Field | anthropic__claude-opus-4.5 | deepseek__deepseek-r1 |
|---|---|---|
| Quality index (0–100) | — | — |
Cost
| Field | anthropic__claude-opus-4.5 | deepseek__deepseek-r1 |
|---|---|---|
| Input $ / 1M tokens | $5.00 | $0.70 |
| Cached input $ / 1M | $0.50 | — |
| Output $ / 1M tokens | $25.00 | $2.50 |
Context
| Field | anthropic__claude-opus-4.5 | deepseek__deepseek-r1 |
|---|---|---|
| Max context tokens | 200,000 | 64,000 |
| Max output tokens | 64,000 | 16,000 |
Modalities
| Field | anthropic__claude-opus-4.5 | deepseek__deepseek-r1 |
|---|---|---|
| Input | file, image, text | text |
| Output | text | text |