# Claude 3.5 Sonnet vs Solar Pro4

> Solar Pro4 is the stronger model overall, scoring 41.5 to 34.4 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-3-5-sonnet-vs-solar-pro4
- Last updated: 2026-10-10
- Shared benchmarks: 17

## Summary

- They share 17 benchmarks with published results for both. Claude 3.5 Sonnet scores higher in 0 categories and Solar Pro4 in 8 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in math, where Solar Pro4 leads 36.1 to 18.0.

## Snapshot

| | Claude 3.5 Sonnet | Solar Pro4 |
|---|---|---|
| Provider | Anthropic | Upstage |
| Noometry Index | 34.4 | 41.5 |
| Rank | 225 | 123 |
| Context | — | 524K |
| Input $/M | — | $0.30 |
| Output $/M | — | $1.20 |
| Weights | Proprietary | Proprietary |

## Coding

- Claude 3.5 Sonnet: 39.5 (#145)
- Solar Pro4: 39.9 (#135)

| Benchmark | Claude 3.5 Sonnet | Solar Pro4 |
|---|---|---|
| LMArena Coding | 1343 | 1439 |
| Aider Polyglot | 51.6% | — |
| LMArena WebDev | — | 1371 |
| GSO | 4.6% | — |
| WeirdML | 40% | — |
| BigCodeBench Instruct | 46.8% | — |
| LiveBench Coding | 67.1% | — |
| BigCodeBench Complete | 58.6% | — |
| CadEval | 48% | — |
| HumanEval+ | 81.7% | — |
| MBPP+ | 74.3% | — |

## Agentic & Tool Use

- Claude 3.5 Sonnet: 32.1 (#61)
- Solar Pro4: —

| Benchmark | Claude 3.5 Sonnet | Solar Pro4 |
|---|---|---|
| TheAgentCompany | 24% | — |
| Cybench | 17.5% | — |
| BALROG | 32.6% | — |
| METR Time Horizons | 45.2% | — |

## Reasoning

- Claude 3.5 Sonnet: 22.5 (#176)
- Solar Pro4: 27.3 (#107)

| Benchmark | Claude 3.5 Sonnet | Solar Pro4 |
|---|---|---|
| LMArena Hard Prompts | 1305 | 1398 |
| SimpleBench | 41.4% | — |
| EnigmaEval | 0.9% | — |
| LiveBench Reasoning | 56.7% | — |
| DTBench | 67.8% | — |
| LiveBench Data Analysis | 55% | — |
| Epoch Capabilities Index | 133.55 | — |
| ForecastBench | 60.7 | — |
| LiveBench | 59% | — |

## Math

- Claude 3.5 Sonnet: 18.0 (#282)
- Solar Pro4: 36.1 (#129)

| Benchmark | Claude 3.5 Sonnet | Solar Pro4 |
|---|---|---|
| LMArena Math | 1306 | 1418 |
| OTIS Mock AIME 2024-2025 | 8.5% | — |
| Omni-MATH | 27.6% | — |
| LiveBench Math | 52.3% | — |
| MATH Level 5 | 56.9% | — |
| FrontierMath (Feb 2025 set) | 2.1% | — |
| FrontierMath Tier 4 (v1) | 0% | — |

## Knowledge

- Claude 3.5 Sonnet: 28.5 (#236)
- Solar Pro4: 39.0 (#128)

| Benchmark | Claude 3.5 Sonnet | Solar Pro4 |
|---|---|---|
| LMArena Expert | 1264 | 1421 |
| GPQA Diamond | 55.3% | — |
| Humanity's Last Exam | 4.1% | — |
| MMLU-Pro | 77.7% | — |
| Confabulations | 19.9% | — |
| GPQA (HELM) | 56.5% | — |
| MMLU | 87.3% | — |

## Multimodal

- Claude 3.5 Sonnet: 26.0 (#115)
- Solar Pro4: —

| Benchmark | Claude 3.5 Sonnet | Solar Pro4 |
|---|---|---|
| LMArena Vision | 1125 | — |
| Video-MME | 60% | — |
| GeoBench | 62% | — |
| VPCT | 33% | — |

## Multilingual

- Claude 3.5 Sonnet: 43.4 (#180)
- Solar Pro4: 49.0 (#134)

| Benchmark | Claude 3.5 Sonnet | Solar Pro4 |
|---|---|---|
| LMArena Non-English | 1283 | 1362 |
| LMArena Chinese | 1271 | 1417 |
| LMArena French | 1304 | 1403 |
| LMArena German | 1297 | 1351 |
| LMArena Japanese | 1234 | 1300 |
| LMArena Korean | 1200 | 1383 |
| LMArena Russian | 1305 | 1360 |
| LMArena Spanish | 1289 | 1408 |

## Instruction Following

- Claude 3.5 Sonnet: 69.0 (#177)
- Solar Pro4: 72.8 (#128)

| Benchmark | Claude 3.5 Sonnet | Solar Pro4 |
|---|---|---|
| LMArena Instruction Following | 1297 | 1376 |
| LiveBench Instruction Following | 69.3% | — |
| IFEval | 85.5% | — |

## Long Context

- Claude 3.5 Sonnet: 39.9 (#162)
- Solar Pro4: 42.0 (#125)

| Benchmark | Claude 3.5 Sonnet | Solar Pro4 |
|---|---|---|
| LMArena Longer Query | 1311 | 1379 |

## Writing & Preference

- Claude 3.5 Sonnet: 53.0 (#159)
- Solar Pro4: 56.7 (#133)

| Benchmark | Claude 3.5 Sonnet | Solar Pro4 |
|---|---|---|
| LMArena Text | 1298 | 1386 |
| LMArena Creative Writing | 1292 | 1313 |
| LMArena Multi-Turn | 1326 | 1391 |
| Short-Story Creative Writing | 80.3% | — |
| EQ-Bench Creative Writing | 1451 | — |
| WildBench | 79.2% | — |
| LiveBench Language | 53.8% | — |

## FAQ

### Is Claude 3.5 Sonnet better than Solar Pro4?

Solar Pro4 is the stronger model overall, scoring 41.5 to 34.4 on the Noometry Index.

### Is Claude 3.5 Sonnet or Solar Pro4 better for coding?

They score almost the same on coding (39.5 vs 39.9); test both on your own repository before choosing.

### How many benchmarks do Claude 3.5 Sonnet and Solar Pro4 share?

17 benchmarks have published results for both models. Claude 3.5 Sonnet has 60 scored results on Noometry and Solar Pro4 has 18.