DeepSeek V3.1 Terminus vs o3
DeepSeek V3.1 Terminus is cheaper on output tokens, while o3 offers a larger context window. Choose DeepSeek V3.1 Terminus or o3 based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | DeepSeek V3.1 Terminus | o3 |
|---|---|---|
| Provider | DeepSeek | OpenAI |
| Input / 1M tokens | $0.27 | $2.00 |
| Output / 1M tokens | $1.00 | $8.00 |
| Context window | 164K | 200K |
| Parameters | — | — |
| Open weights | — | No |
| Released | — | Apr 2025 |
| LMArena (Chatbot Arena) Elo score | 1419 | 1410 |
| Aider Polyglot score | — | 81.3 |
| SWE-bench Verified score | — | 58.4 |
| SWE-bench Multimodal score | — | 36.0 |
| GPQA Diamond score | — | 81.8 |
| FrontierMath score | — | 18.7 |
| LMArena Vision Elo score | — | 1214 |
| Epoch Capabilities Index score | — | 147 |
FAQ
Is DeepSeek V3.1 Terminus or o3 cheaper?
DeepSeek V3.1 Terminus is cheaper on output tokens ($1.00 vs $8.00 per 1M).
Which has the larger context window, DeepSeek V3.1 Terminus or o3?
o3 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.