# DeepSeek-V3.1-Terminus vs Grok 4.1

> DeepSeek-V3.1-Terminus is the stronger model overall, scoring 43.1 to 41.5 on the Noometry Index.

- Canonical page: https://noometry.com/compare/deepseek-v3-1-terminus-vs-grok-4-1
- Last updated: 2026-10-10
- Shared benchmarks: 10

## Summary

- They share 10 benchmarks with published results for both. DeepSeek-V3.1-Terminus scores higher in 3 categories and Grok 4.1 in 4 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in coding, where DeepSeek-V3.1-Terminus leads 42.0 to 33.7.
- DeepSeek-V3.1-Terminus has downloadable open weights; the other is API-only.

## Snapshot

| | DeepSeek-V3.1-Terminus | Grok 4.1 |
|---|---|---|
| Provider | DeepSeek | xAI |
| Noometry Index | 43.1 | 41.5 |
| Rank | 97 | 134 |
| Context | 164K | — |
| Input $/M | $0.27 | — |
| Output $/M | $1 | — |
| Weights | Open | Proprietary |

## Coding

- DeepSeek-V3.1-Terminus: 42.0 (#113)
- Grok 4.1: 33.7 (#253)

| Benchmark | DeepSeek-V3.1-Terminus | Grok 4.1 |
|---|---|---|
| LMArena Coding | 1426 | 1445 |
| LMArena WebDev | — | 1214 |
| SciCode | 40.6% | — |
| ALE-Bench | 745.17 | — |

## Agentic & Tool Use

- DeepSeek-V3.1-Terminus: —
- Grok 4.1: 34.1 (#49)

| Benchmark | DeepSeek-V3.1-Terminus | Grok 4.1 |
|---|---|---|
| Cybench | — | 39% |

## Reasoning

- DeepSeek-V3.1-Terminus: 26.4 (#133)
- Grok 4.1: 29.5 (#91)

| Benchmark | DeepSeek-V3.1-Terminus | Grok 4.1 |
|---|---|---|
| LMArena Hard Prompts | 1426 | 1435 |
| Kagi LLM Benchmark | 57.4% | — |
| CritPt | 1.7% | — |
| DTBench | 81.3% | — |
| LMCA | 28.6% | — |

## Math

- DeepSeek-V3.1-Terminus: 38.5 (#137)
- Grok 4.1: 38.9 (#120)

| Benchmark | DeepSeek-V3.1-Terminus | Grok 4.1 |
|---|---|---|
| LMArena Math | 1402 | 1422 |

## Knowledge

- DeepSeek-V3.1-Terminus: —
- Grok 4.1: 39.5 (#133)

| Benchmark | DeepSeek-V3.1-Terminus | Grok 4.1 |
|---|---|---|
| LMArena Expert | — | 1417 |

## Multilingual

- DeepSeek-V3.1-Terminus: 52.1 (#92)
- Grok 4.1: 53.4 (#68)

| Benchmark | DeepSeek-V3.1-Terminus | Grok 4.1 |
|---|---|---|
| LMArena Non-English | 1407 | 1425 |
| LMArena Russian | 1436 | 1434 |
| LMArena Chinese | — | 1465 |
| LMArena French | — | 1448 |
| LMArena German | — | 1446 |
| LMArena Japanese | — | 1397 |
| LMArena Korean | — | 1407 |
| LMArena Spanish | — | 1438 |

## Instruction Following

- DeepSeek-V3.1-Terminus: 74.0 (#106)
- Grok 4.1: 73.8 (#111)

| Benchmark | DeepSeek-V3.1-Terminus | Grok 4.1 |
|---|---|---|
| LMArena Instruction Following | 1404 | 1400 |

## Long Context

- DeepSeek-V3.1-Terminus: 43.4 (#97)
- Grok 4.1: 43.2 (#100)

| Benchmark | DeepSeek-V3.1-Terminus | Grok 4.1 |
|---|---|---|
| LMArena Longer Query | 1421 | 1416 |

## Writing & Preference

- DeepSeek-V3.1-Terminus: 61.0 (#92)
- Grok 4.1: 62.4 (#75)

| Benchmark | DeepSeek-V3.1-Terminus | Grok 4.1 |
|---|---|---|
| LMArena Text | 1419 | 1437 |
| LMArena Creative Writing | 1403 | 1411 |
| LMArena Multi-Turn | 1411 | 1437 |

## FAQ

### Is DeepSeek-V3.1-Terminus better than Grok 4.1?

DeepSeek-V3.1-Terminus is the stronger model overall, scoring 43.1 to 41.5 on the Noometry Index.

### Is DeepSeek-V3.1-Terminus or Grok 4.1 better for coding?

DeepSeek-V3.1-Terminus scores higher on coding benchmarks: 42.0 versus 33.7 in the Noometry coding category.

### How many benchmarks do DeepSeek-V3.1-Terminus and Grok 4.1 share?

10 benchmarks have published results for both models. DeepSeek-V3.1-Terminus has 16 scored results on Noometry and Grok 4.1 has 19.