R1 0528 is 11.3× cheaper per million tokens (blended). Claude Opus 5 has the larger context window (1,000,000 vs 163,840 tokens, 6.1×). R1 0528 is open-weights; the other is not.
Claude Opus 5 vs R1 0528
Live catalog fields. Best-in-row is highlighted.
Claude Opus 5
Anthropic · anthropic__claude-opus-5
R1 0528open
DeepSeek · deepseek__deepseek-r1-0528
Identity
| Field | anthropic__claude-opus-5 | deepseek__deepseek-r1-0528 |
|---|---|---|
| Provider | Anthropic | DeepSeek |
| Slug | anthropic__claude-opus-5 | deepseek__deepseek-r1-0528 |
| Status | live | live |
| Open weights | No | Yes |
| License | — | — |
| HuggingFace | — | deepseek-ai/DeepSeek-R1-0528 |
Quality
| Field | anthropic__claude-opus-5 | deepseek__deepseek-r1-0528 |
|---|---|---|
| Quality index (0–100) | 93.4 | — |
Cost
| Field | anthropic__claude-opus-5 | deepseek__deepseek-r1-0528 |
|---|---|---|
| Input $ / 1M tokens | $5.00 | $0.50 |
| Cached input $ / 1M | $0.50 | $0.35 |
| Output $ / 1M tokens | $25.00 | $2.15 |
Context
| Field | anthropic__claude-opus-5 | deepseek__deepseek-r1-0528 |
|---|---|---|
| Max context tokens | 1,000,000 | 163,840 |
| Max output tokens | 128,000 | 32,768 |
Modalities
| Field | anthropic__claude-opus-5 | deepseek__deepseek-r1-0528 |
|---|---|---|
| Input | text, image, file | text |
| Output | text | text |