# Claude Sonnet 5 vs Deepseek Coder v2

> Claude Sonnet 5 is the stronger model overall, scoring 54.6 to 35.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-sonnet-5-vs-deepseek-coder-v2
- Last updated: 2026-10-11
- Shared benchmarks: 17

## Summary

- They share 17 benchmarks with published results for both. Claude Sonnet 5 scores higher in 8 categories and Deepseek Coder v2 in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where Claude Sonnet 5 leads 66.2 to 34.9.
- Deepseek Coder v2 has downloadable open weights; the other is API-only.

## Snapshot

| | Claude Sonnet 5 | Deepseek Coder v2 |
|---|---|---|
| Provider | Anthropic | DeepSeek |
| Noometry Index | 54.6 | 35.9 |
| Rank | 29 | 220 |
| Context | 1M | — |
| Input $/M | $2 | — |
| Output $/M | $10 | — |
| Weights | Proprietary | Open |

## Coding

- Claude Sonnet 5: 55.5 (#26)
- Deepseek Coder v2: 38.1 (#183)

| Benchmark | Claude Sonnet 5 | Deepseek Coder v2 |
|---|---|---|
| LMArena Coding | 1483 | 1251 |
| DeepSWE | 53.8% | — |
| FrontierCode | 42.7% | — |
| CursorBench | 34.1% | — |
| LMArena WebDev | 1541 | — |
| SciCode | 54.3% | — |
| GSO | 37.3% | — |
| WeirdML | 68.8% | — |
| BigCodeBench Instruct | — | 48.2% |
| BigCodeBench Complete | — | 59.7% |
| ALE-Bench | 1,463 | — |
| HumanEval+ | — | 82.3% |
| MBPP+ | — | 75.1% |

## Agentic & Tool Use

- Claude Sonnet 5: 42.8 (#18)
- Deepseek Coder v2: —

| Benchmark | Claude Sonnet 5 | Deepseek Coder v2 |
|---|---|---|
| APEX-Agents | 54.5% | — |
| GBAEval | 65.3% | — |
| LMArena Search | 1194 | — |
| Vending-Bench 2 | 6,378 | — |

## Reasoning

- Claude Sonnet 5: 49.1 (#39)
- Deepseek Coder v2: 23.6 (#176)

| Benchmark | Claude Sonnet 5 | Deepseek Coder v2 |
|---|---|---|
| LMArena Hard Prompts | 1461 | 1207 |
| SimpleBench | 60.6% | — |
| NYT Connections (extended) | 75.1% | — |
| CritPt | 16.9% | — |
| Chess Puzzles | 35% | — |
| Mystery Game Puzzles | 35% | — |
| DTBench | 92.5% | — |
| LMCA | 50% | — |
| Surface Evolver Bench | 60% | — |
| Bench to the Future 3 | 0.14 | — |
| Epoch Capabilities Index | 156.21 | — |
| ForecastBench | 61.1 | — |
| WinoGrande | — | 83.7% |

## Math

- Claude Sonnet 5: 66.2 (#27)
- Deepseek Coder v2: 34.9 (#190)

| Benchmark | Claude Sonnet 5 | Deepseek Coder v2 |
|---|---|---|
| LMArena Math | 1467 | 1241 |
| FrontierMath (Tiers 1-3) | 65.6% | — |
| FrontierMath Tier 4 | 29.3% | — |
| OTIS Mock AIME 2024-2025 | 94.7% | — |
| ProofBench | 77% | — |
| GSM8K | — | 94.5% |

## Knowledge

- Claude Sonnet 5: 55.6 (#47)
- Deepseek Coder v2: 32.3 (#212)

| Benchmark | Claude Sonnet 5 | Deepseek Coder v2 |
|---|---|---|
| LMArena Expert | 1490 | 1181 |
| GPQA Diamond | 90.5% | — |
| SimpleQA Verified | 33.7% | — |
| ARC (AI2) Challenge | — | 64.3% |

## Multimodal

- Claude Sonnet 5: 42.4 (#31)
- Deepseek Coder v2: —

| Benchmark | Claude Sonnet 5 | Deepseek Coder v2 |
|---|---|---|
| LMArena Vision | 1274 | — |
| Blueprint-Bench 2 | 24.9% | — |
| LMArena Document | 1466 | — |

## Multilingual

- Claude Sonnet 5: 53.8 (#55)
- Deepseek Coder v2: 36.3 (#240)

| Benchmark | Claude Sonnet 5 | Deepseek Coder v2 |
|---|---|---|
| LMArena Non-English | 1431 | 1182 |
| LMArena Chinese | 1477 | 1201 |
| LMArena French | 1460 | 1185 |
| LMArena German | 1440 | 1164 |
| LMArena Japanese | 1422 | 1126 |
| LMArena Korean | 1411 | 1104 |
| LMArena Russian | 1451 | 1188 |
| LMArena Spanish | 1437 | 1153 |

## Instruction Following

- Claude Sonnet 5: 76.3 (#41)
- Deepseek Coder v2: 61.7 (#242)

| Benchmark | Claude Sonnet 5 | Deepseek Coder v2 |
|---|---|---|
| LMArena Instruction Following | 1452 | 1180 |

## Long Context

- Claude Sonnet 5: 44.8 (#55)
- Deepseek Coder v2: 37.0 (#224)

| Benchmark | Claude Sonnet 5 | Deepseek Coder v2 |
|---|---|---|
| LMArena Longer Query | 1463 | 1219 |

## Writing & Preference

- Claude Sonnet 5: 69.2 (#25)
- Deepseek Coder v2: 38.2 (#253)

| Benchmark | Claude Sonnet 5 | Deepseek Coder v2 |
|---|---|---|
| LMArena Text | 1442 | 1191 |
| LMArena Creative Writing | 1416 | 1120 |
| LMArena Multi-Turn | 1454 | 1177 |
| EQ-Bench Creative Writing | 1794 | — |
| EQ-Bench 4 | 1236 | — |

## FAQ

### Is Claude Sonnet 5 better than Deepseek Coder v2?

Claude Sonnet 5 is the stronger model overall, scoring 54.6 to 35.9 on the Noometry Index.

### Is Claude Sonnet 5 or Deepseek Coder v2 better for coding?

Claude Sonnet 5 scores higher on coding benchmarks: 55.5 versus 38.1 in the Noometry coding category.

### How many benchmarks do Claude Sonnet 5 and Deepseek Coder v2 share?

17 benchmarks have published results for both models. Claude Sonnet 5 has 51 scored results on Noometry and Deepseek Coder v2 has 24.