DeepSeek V3.1 is 25.0× cheaper per million tokens (blended). Claude Opus 5 has the larger context window (1,000,000 vs 163,840 tokens, 6.1×). DeepSeek V3.1 is open-weights; the other is not.
Claude Opus 5 vs DeepSeek V3.1
Live catalog fields. Best-in-row is highlighted.
Claude Opus 5
Anthropic · anthropic__claude-opus-5
DeepSeek V3.1open
DeepSeek · deepseek__deepseek-chat-v3.1
Identity
| Field | anthropic__claude-opus-5 | deepseek__deepseek-chat-v3.1 |
|---|---|---|
| Provider | Anthropic | DeepSeek |
| Slug | anthropic__claude-opus-5 | deepseek__deepseek-chat-v3.1 |
| Status | live | live |
| Open weights | No | Yes |
| License | — | — |
| HuggingFace | — | deepseek-ai/DeepSeek-V3.1 |
Quality
| Field | anthropic__claude-opus-5 | deepseek__deepseek-chat-v3.1 |
|---|---|---|
| Quality index (0–100) | — | — |
Cost
| Field | anthropic__claude-opus-5 | deepseek__deepseek-chat-v3.1 |
|---|---|---|
| Input $ / 1M tokens | $5.00 | $0.25 |
| Cached input $ / 1M | $0.50 | $0.13 |
| Output $ / 1M tokens | $25.00 | $0.95 |
Context
| Field | anthropic__claude-opus-5 | deepseek__deepseek-chat-v3.1 |
|---|---|---|
| Max context tokens | 1,000,000 | 163,840 |
| Max output tokens | 128,000 | 32,768 |
Modalities
| Field | anthropic__claude-opus-5 | deepseek__deepseek-chat-v3.1 |
|---|---|---|
| Input | text, image, file | text |
| Output | text | text |