# Claude Opus 4.1 vs DeepSeek LLM 67B

> Claude Opus 4.1 is the stronger model overall, scoring 41.0 to 24.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-opus-4-1-vs-deepseek-llm-67b
- Last updated: 2026-10-12
- Shared benchmarks: 14

## Summary

- They share 14 benchmarks with published results for both. Claude Opus 4.1 scores higher in 8 categories and DeepSeek LLM 67B in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Claude Opus 4.1 leads 42.0 to 7.0.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 68.9% for Claude Opus 4.1 and 0.8% for DeepSeek LLM 67B.
- DeepSeek LLM 67B has downloadable open weights; the other is API-only.

## Snapshot

| | Claude Opus 4.1 | DeepSeek LLM 67B |
|---|---|---|
| Provider | Anthropic | DeepSeek |
| Noometry Index | 41.0 | 24.9 |
| Rank | 142 | 347 |
| Context | 200K | — |
| Input $/M | $15 | — |
| Output $/M | $75 | — |
| Weights | Proprietary | Open |

## Coding

- Claude Opus 4.1: 44.4 (#73)
- DeepSeek LLM 67B: 31.9 (#278)

| Benchmark | Claude Opus 4.1 | DeepSeek LLM 67B |
|---|---|---|
| LMArena Coding | 1479 | 1096 |
| SWE-bench Verified | 73.3% | — |
| LMArena WebDev | 1390 | — |
| WeirdML | 45.9% | — |
| ALE-Bench | 674.77 | — |
| AlgoTune | 1.34 | — |

## Agentic & Tool Use

- Claude Opus 4.1: 35.0 (#41)
- DeepSeek LLM 67B: —

| Benchmark | Claude Opus 4.1 | DeepSeek LLM 67B |
|---|---|---|
| Terminal-Bench | 38% | — |
| GDPval | 43.6% | — |
| Cybench | 42% | — |
| DeepResearch Bench | 48.3% | — |
| LMArena Search | 1148 | — |
| METR Time Horizons | 66.8% | — |

## Reasoning

- Claude Opus 4.1: 32.2 (#76)
- DeepSeek LLM 67B: 16.5 (#304)

| Benchmark | Claude Opus 4.1 | DeepSeek LLM 67B |
|---|---|---|
| Chess Puzzles | 7% | 0% |
| LMArena Hard Prompts | 1443 | 1070 |
| Epoch Capabilities Index | 144.12 | 110.5 |
| SimpleBench | 60% | — |
| EnigmaEval | 7.2% | — |
| EBR-Bench | 7.9% | — |
| Mystery Game Puzzles | 21% | — |
| DTBench | 80% | — |
| LMCA | 37.1% | — |
| ForecastBench | 62 | — |

## Math

- Claude Opus 4.1: 22.3 (#277)
- DeepSeek LLM 67B: 8.7 (#324)

| Benchmark | Claude Opus 4.1 | DeepSeek LLM 67B |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 68.9% | 0.8% |
| LMArena Math | 1431 | 1108 |
| FrontierMath (Tiers 1-3) | 12.6% | — |
| FrontierMath Tier 4 | 2.4% | — |
| MATH Level 5 | — | 6.4% |
| FrontierMath (Feb 2025 set) | 7.2% | — |
| FrontierMath Tier 4 (v1) | 4.2% | — |

## Knowledge

- Claude Opus 4.1: 42.0 (#101)
- DeepSeek LLM 67B: 7.0 (#313)

| Benchmark | Claude Opus 4.1 | DeepSeek LLM 67B |
|---|---|---|
| GPQA Diamond | 77.3% | 24.6% |
| Humanity's Last Exam | 11.5% | — |
| Confabulations | 17.1% | — |
| Vectara Hallucination Rate | 11.8% | — |
| LMArena Expert | 1439 | — |

## Multimodal

- Claude Opus 4.1: 26.8 (#119)
- DeepSeek LLM 67B: —

| Benchmark | Claude Opus 4.1 | DeepSeek LLM 67B |
|---|---|---|
| VPCT | 35% | — |

## Multilingual

- Claude Opus 4.1: 52.0 (#95)
- DeepSeek LLM 67B: 29.4 (#267)

| Benchmark | Claude Opus 4.1 | DeepSeek LLM 67B |
|---|---|---|
| LMArena Non-English | 1405 | 1073 |
| LMArena Chinese | 1427 | 1132 |
| LMArena French | 1431 | — |
| LMArena German | 1413 | — |
| LMArena Japanese | 1378 | — |
| LMArena Korean | 1380 | — |
| LMArena Russian | 1422 | — |
| LMArena Spanish | 1448 | — |

## Instruction Following

- Claude Opus 4.1: 75.6 (#58)
- DeepSeek LLM 67B: 55.4 (#277)

| Benchmark | Claude Opus 4.1 | DeepSeek LLM 67B |
|---|---|---|
| LMArena Instruction Following | 1435 | 1079 |

## Long Context

- Claude Opus 4.1: 44.5 (#63)
- DeepSeek LLM 67B: 33.1 (#265)

| Benchmark | Claude Opus 4.1 | DeepSeek LLM 67B |
|---|---|---|
| LMArena Longer Query | 1455 | 1092 |

## Writing & Preference

- Claude Opus 4.1: 62.4 (#74)
- DeepSeek LLM 67B: 31.6 (#282)

| Benchmark | Claude Opus 4.1 | DeepSeek LLM 67B |
|---|---|---|
| LMArena Text | 1419 | 1105 |
| LMArena Creative Writing | 1412 | 1067 |
| LMArena Multi-Turn | 1444 | 1082 |
| Short-Story Creative Writing | 84.7% | — |

## FAQ

### Is Claude Opus 4.1 better than DeepSeek LLM 67B?

Claude Opus 4.1 is the stronger model overall, scoring 41.0 to 24.9 on the Noometry Index.

### Is Claude Opus 4.1 or DeepSeek LLM 67B better for coding?

Claude Opus 4.1 scores higher on coding benchmarks: 44.4 versus 31.9 in the Noometry coding category.

### How many benchmarks do Claude Opus 4.1 and DeepSeek LLM 67B share?

14 benchmarks have published results for both models. Claude Opus 4.1 has 48 scored results on Noometry and DeepSeek LLM 67B has 15.