# DeepSeek-V3.1-Terminus vs Grok 3

> DeepSeek-V3.1-Terminus is the stronger model overall, scoring 42.6 to 39.6 on the Noometry Index.

- Canonical page: https://noometry.com/compare/deepseek-v3-1-terminus-vs-grok-3
- Last updated: 2026-10-10
- Shared benchmarks: 11

## Summary

- They share 11 benchmarks with published results for both. DeepSeek-V3.1-Terminus scores higher in 3 categories and Grok 3 in 4 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where DeepSeek-V3.1-Terminus leads 25.7 to 13.8.
- DeepSeek-V3.1-Terminus has downloadable open weights; the other is API-only.

## Snapshot

| | DeepSeek-V3.1-Terminus | Grok 3 |
|---|---|---|
| Provider | DeepSeek | xAI |
| Noometry Index | 42.6 | 39.6 |
| Rank | 96 | 150 |
| Context | 164K | — |
| Input $/M | $0.30 | — |
| Output $/M | $1 | — |
| Weights | Open | Proprietary |

## Coding

- DeepSeek-V3.1-Terminus: 41.5 (#114)
- Grok 3: 41.5 (#113)

| Benchmark | DeepSeek-V3.1-Terminus | Grok 3 |
|---|---|---|
| LMArena Coding | 1426 | 1432 |
| Aider Polyglot | — | 53.3% |
| SciCode | 40.6% | — |
| WeirdML | — | 37.2% |
| ALE-Bench | 745.17 | — |

## Agentic & Tool Use

- DeepSeek-V3.1-Terminus: —
- Grok 3: 30.2 (#69)

| Benchmark | DeepSeek-V3.1-Terminus | Grok 3 |
|---|---|---|
| BALROG | — | 29.5% |

## Reasoning

- DeepSeek-V3.1-Terminus: 25.7 (#126)
- Grok 3: 13.8 (#322)

| Benchmark | DeepSeek-V3.1-Terminus | Grok 3 |
|---|---|---|
| Kagi LLM Benchmark | 57.4% | 61.3% |
| LMArena Hard Prompts | 1427 | 1433 |
| ARC-AGI-2 | — | 0% |
| SimpleBench | — | 36.1% |
| ARC-AGI-1 | — | 5.5% |
| CritPt | 1.7% | — |
| DTBench | 81.3% | — |
| LMCA | 28.6% | — |
| Epoch Capabilities Index | — | 138.34 |

## Math

- DeepSeek-V3.1-Terminus: 35.7 (#138)
- Grok 3: 36.2 (#122)

| Benchmark | DeepSeek-V3.1-Terminus | Grok 3 |
|---|---|---|
| LMArena Math | 1402 | 1390 |
| OTIS Mock AIME 2024-2025 | — | 55.6% |
| Omni-MATH | — | 46.4% |
| MATH Level 5 | — | 88.7% |
| FrontierMath (Feb 2025 set) | — | 3.8% |
| FrontierMath Tier 4 (v1) | — | 0% |

## Knowledge

- DeepSeek-V3.1-Terminus: —
- Grok 3: 46.0 (#76)

| Benchmark | DeepSeek-V3.1-Terminus | Grok 3 |
|---|---|---|
| GPQA Diamond | — | 75.8% |
| MMLU-Pro | — | 78.8% |
| Confabulations | — | 14.2% |
| Vectara Hallucination Rate | — | 5.8% |
| GPQA (HELM) | — | 65% |
| LMArena Expert | — | 1420 |

## Multilingual

- DeepSeek-V3.1-Terminus: 52.3 (#87)
- Grok 3: 52.5 (#81)

| Benchmark | DeepSeek-V3.1-Terminus | Grok 3 |
|---|---|---|
| LMArena Non-English | 1407 | 1411 |
| LMArena Russian | 1434 | 1416 |
| LMArena Chinese | — | 1448 |
| LMArena French | — | 1460 |
| LMArena German | — | 1431 |
| LMArena Japanese | — | 1389 |
| LMArena Korean | — | 1374 |
| LMArena Spanish | — | 1417 |

## Instruction Following

- DeepSeek-V3.1-Terminus: 74.4 (#96)
- Grok 3: 75.2 (#69)

| Benchmark | DeepSeek-V3.1-Terminus | Grok 3 |
|---|---|---|
| LMArena Instruction Following | 1406 | 1409 |
| IFEval | — | 88.4% |

## Long Context

- DeepSeek-V3.1-Terminus: 43.5 (#88)
- Grok 3: 38.7 (#187)

| Benchmark | DeepSeek-V3.1-Terminus | Grok 3 |
|---|---|---|
| LMArena Longer Query | 1426 | 1439 |
| Fiction.LiveBench | — | 58.3% |

## Writing & Preference

- DeepSeek-V3.1-Terminus: 61.3 (#87)
- Grok 3: 56.0 (#136)

| Benchmark | DeepSeek-V3.1-Terminus | Grok 3 |
|---|---|---|
| LMArena Text | 1420 | 1426 |
| LMArena Creative Writing | 1404 | 1414 |
| LMArena Multi-Turn | 1411 | 1424 |
| Short-Story Creative Writing | — | 76.4% |
| EQ-Bench Creative Writing | — | 1186 |
| WildBench | — | 84.9% |

## FAQ

### Is DeepSeek-V3.1-Terminus better than Grok 3?

DeepSeek-V3.1-Terminus is the stronger model overall, scoring 42.6 to 39.6 on the Noometry Index.

### Is DeepSeek-V3.1-Terminus or Grok 3 better for coding?

They score almost the same on coding (41.5 vs 41.5); test both on your own repository before choosing.

### How many benchmarks do DeepSeek-V3.1-Terminus and Grok 3 share?

11 benchmarks have published results for both models. DeepSeek-V3.1-Terminus has 16 scored results on Noometry and Grok 3 has 40.