# Claude Opus 4.1 vs Solar Pro4

> Claude Opus 4.1 and Solar Pro4 score almost the same on the Noometry Index (40.8 vs 41.5), so choose on price, context window or the category you care about most.

- Canonical page: https://noometry.com/compare/claude-opus-4-1-vs-solar-pro4
- Last updated: 2026-10-10
- Shared benchmarks: 18

## Summary

- They share 18 benchmarks with published results for both. Claude Opus 4.1 scores higher in 7 categories and Solar Pro4 in 1 category; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where Solar Pro4 leads 36.1 to 22.0.
- Solar Pro4 is cheaper at $0.30 / $1.20 per million input/output tokens, against $15 / $75 for Claude Opus 4.1.
- Solar Pro4 accepts more context: 524K tokens versus 200K.

## Snapshot

| | Claude Opus 4.1 | Solar Pro4 |
|---|---|---|
| Provider | Anthropic | Upstage |
| Noometry Index | 40.8 | 41.5 |
| Rank | 136 | 123 |
| Context | 200K | 524K |
| Input $/M | $15 | $0.30 |
| Output $/M | $75 | $1.20 |
| Weights | Proprietary | Proprietary |

## Coding

- Claude Opus 4.1: 44.3 (#69)
- Solar Pro4: 39.9 (#135)

| Benchmark | Claude Opus 4.1 | Solar Pro4 |
|---|---|---|
| LMArena WebDev | 1390 | 1371 |
| LMArena Coding | 1479 | 1439 |
| SWE-bench Verified | 73.3% | — |
| WeirdML | 45.9% | — |
| ALE-Bench | 674.77 | — |
| AlgoTune | 1.34 | — |

## Agentic & Tool Use

- Claude Opus 4.1: 34.8 (#38)
- Solar Pro4: —

| Benchmark | Claude Opus 4.1 | Solar Pro4 |
|---|---|---|
| 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: 31.6 (#70)
- Solar Pro4: 27.3 (#107)

| Benchmark | Claude Opus 4.1 | Solar Pro4 |
|---|---|---|
| LMArena Hard Prompts | 1443 | 1398 |
| SimpleBench | 60% | — |
| Chess Puzzles | 7% | — |
| EnigmaEval | 7.2% | — |
| EBR-Bench | 7.9% | — |
| Mystery Game Puzzles | 21% | — |
| DTBench | 80% | — |
| LMCA | 37.1% | — |
| Epoch Capabilities Index | 144.11 | — |
| ForecastBench | 62 | — |

## Math

- Claude Opus 4.1: 22.0 (#267)
- Solar Pro4: 36.1 (#129)

| Benchmark | Claude Opus 4.1 | Solar Pro4 |
|---|---|---|
| LMArena Math | 1430 | 1418 |
| FrontierMath (Tiers 1-3) | 12.6% | — |
| FrontierMath Tier 4 | 2.4% | — |
| OTIS Mock AIME 2024-2025 | 68.9% | — |
| FrontierMath (Feb 2025 set) | 7.2% | — |
| FrontierMath Tier 4 (v1) | 4.2% | — |

## Knowledge

- Claude Opus 4.1: 41.9 (#93)
- Solar Pro4: 39.0 (#128)

| Benchmark | Claude Opus 4.1 | Solar Pro4 |
|---|---|---|
| LMArena Expert | 1439 | 1421 |
| GPQA Diamond | 77.3% | — |
| Humanity's Last Exam | 11.5% | — |
| Confabulations | 17.1% | — |
| Vectara Hallucination Rate | 11.8% | — |

## Multimodal

- Claude Opus 4.1: 26.2 (#114)
- Solar Pro4: —

| Benchmark | Claude Opus 4.1 | Solar Pro4 |
|---|---|---|
| VPCT | 35% | — |

## Multilingual

- Claude Opus 4.1: 52.1 (#90)
- Solar Pro4: 49.0 (#134)

| Benchmark | Claude Opus 4.1 | Solar Pro4 |
|---|---|---|
| LMArena Non-English | 1405 | 1362 |
| LMArena Chinese | 1427 | 1417 |
| LMArena French | 1432 | 1403 |
| LMArena German | 1412 | 1351 |
| LMArena Japanese | 1378 | 1300 |
| LMArena Korean | 1381 | 1383 |
| LMArena Russian | 1421 | 1360 |
| LMArena Spanish | 1448 | 1408 |

## Instruction Following

- Claude Opus 4.1: 75.8 (#53)
- Solar Pro4: 72.8 (#128)

| Benchmark | Claude Opus 4.1 | Solar Pro4 |
|---|---|---|
| LMArena Instruction Following | 1436 | 1376 |

## Long Context

- Claude Opus 4.1: 44.5 (#60)
- Solar Pro4: 42.0 (#125)

| Benchmark | Claude Opus 4.1 | Solar Pro4 |
|---|---|---|
| LMArena Longer Query | 1455 | 1379 |

## Writing & Preference

- Claude Opus 4.1: 62.6 (#70)
- Solar Pro4: 56.7 (#133)

| Benchmark | Claude Opus 4.1 | Solar Pro4 |
|---|---|---|
| LMArena Text | 1419 | 1386 |
| LMArena Creative Writing | 1412 | 1313 |
| LMArena Multi-Turn | 1444 | 1391 |
| Short-Story Creative Writing | 84.7% | — |

## FAQ

### Is Claude Opus 4.1 better than Solar Pro4?

Claude Opus 4.1 and Solar Pro4 score almost the same on the Noometry Index (40.8 vs 41.5), so choose on price, context window or the category you care about most.

### Which is cheaper, Claude Opus 4.1 or Solar Pro4?

Solar Pro4 is cheaper. It lists at $0.30 per million input tokens and $1.20 per million output tokens; Claude Opus 4.1 lists at $15 and $75.

### Is Claude Opus 4.1 or Solar Pro4 better for coding?

Claude Opus 4.1 scores higher on coding benchmarks: 44.3 versus 39.9 in the Noometry coding category.

### Which has the bigger context window?

Solar Pro4 does, with 524K tokens against 200K.

### How many benchmarks do Claude Opus 4.1 and Solar Pro4 share?

18 benchmarks have published results for both models. Claude Opus 4.1 has 48 scored results on Noometry and Solar Pro4 has 18.