R1 is 5.6× cheaper per million tokens (blended). Claude Sonnet 4.6 has the larger context window (1,000,000 vs 64,000 tokens, 15.6×). R1 is open-weights; the other is not.
Claude Sonnet 4.6 vs R1
Live catalog fields. Best-in-row is highlighted.
Claude Sonnet 4.6
Anthropic · anthropic__claude-sonnet-4.6
R1open
DeepSeek · deepseek__deepseek-r1
Identity
| Field | anthropic__claude-sonnet-4.6 | deepseek__deepseek-r1 |
|---|---|---|
| Provider | Anthropic | DeepSeek |
| Slug | anthropic__claude-sonnet-4.6 | deepseek__deepseek-r1 |
| Status | live | live |
| Open weights | No | Yes |
| License | — | — |
| HuggingFace | — | deepseek-ai/DeepSeek-R1 |
Quality
| Field | anthropic__claude-sonnet-4.6 | deepseek__deepseek-r1 |
|---|---|---|
| Quality index (0–100) | — | — |
Cost
| Field | anthropic__claude-sonnet-4.6 | deepseek__deepseek-r1 |
|---|---|---|
| Input $ / 1M tokens | $3.00 | $0.70 |
| Cached input $ / 1M | $0.30 | — |
| Output $ / 1M tokens | $15.00 | $2.50 |
Context
| Field | anthropic__claude-sonnet-4.6 | deepseek__deepseek-r1 |
|---|---|---|
| Max context tokens | 1,000,000 | 64,000 |
| Max output tokens | 128,000 | 16,000 |
Modalities
| Field | anthropic__claude-sonnet-4.6 | deepseek__deepseek-r1 |
|---|---|---|
| Input | text, image, file | text |
| Output | text | text |