DeepSeek V3.1 Terminus vs Grok 4.3
DeepSeek vs xAI — benchmarks, pricing, and capabilities side by side.
- •Grok 4.3 has the higher intelligence index (90.1 vs 83.5)
- •DeepSeek V3.1 Terminus is cheaper ($0.27 vs $1.25 per 1M input)
- •Grok 4.3 has a larger context window (1M)
| DeepSeek V3.1 Terminus | Grok 4.3 | |
|---|---|---|
| Intelligence index | 83.5 | 90.1 |
| Developer | DeepSeek | xAI |
| Type | LLM | LLM |
| Access | Open weights | API only |
| Context window | 163,840 tokens | 1,000,000 tokens |
| Input price | $0.27 / 1M | $1.25 / 1M |
| Output price | $0.95 / 1M | $2.50 / 1M |
| Speed | — | 88 tok/s |
| Released | September 22, 2025 | May 6, 2026 |
| Parameters | — | — |
| Input modalities | Text | Text, Image |
| Output modalities | Text | Text |
Shared benchmarks
DeepSeek V3.1 Terminus
Grok 4.3
GPQA Diamond
79.2
90.1
Humanity’s Last Exam
15.2
35