Claude Opus 4 vs DeepSeek V3.1 Terminus
DeepSeek V3.1 Terminus is cheaper on output tokens, while Claude Opus 4 offers a larger context window. Choose Claude Opus 4 or DeepSeek V3.1 Terminus based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Claude Opus 4 | DeepSeek V3.1 Terminus |
|---|---|---|
| Provider | Anthropic | DeepSeek |
| Input / 1M tokens | $15.00 | $0.27 |
| Output / 1M tokens | $75.00 | $1.00 |
| Context window | 200K | 164K |
| Parameters | — | — |
| Open weights | No | — |
| Released | May 2025 | — |
| Aider Polyglot score | 72.0 | — |
| GPQA Diamond score | 76.3 | — |
| FrontierMath score | 4.5 | — |
| Epoch Capabilities Index score | 143 | — |
| LMArena (Chatbot Arena) Elo score | 1377 | 1419 |
| LMArena Vision Elo score | 1192 | — |
FAQ
Is Claude Opus 4 or DeepSeek V3.1 Terminus cheaper?
DeepSeek V3.1 Terminus is cheaper on output tokens ($1.00 vs $75.00 per 1M).
Which has the larger context window, Claude Opus 4 or DeepSeek V3.1 Terminus?
Claude Opus 4 has the larger context window (200K tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.