# Grok Build 0.1 vs Solar Pro4

> Solar Pro4 is the stronger model overall, scoring 41.5 to 35.8 on the Noometry Index.

- Canonical page: https://noometry.com/compare/grok-build-0-1-vs-solar-pro4
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- The widest gap is in reasoning, where Grok Build 0.1 leads 31.3 to 27.3.
- Solar Pro4 is cheaper at $0.30 / $1.20 per million input/output tokens, against $1 / $2 for Grok Build 0.1.
- Solar Pro4 accepts more context: 524K tokens versus 256K.

## Snapshot

| | Grok Build 0.1 | Solar Pro4 |
|---|---|---|
| Provider | xAI | Upstage |
| Noometry Index | 35.8 | 41.5 |
| Rank | 214 | 123 |
| Context | 256K | 524K |
| Input $/M | $1 | $0.30 |
| Output $/M | $2 | $1.20 |
| Weights | Proprietary | Proprietary |

## Coding

- Grok Build 0.1: 42.5 (#90)
- Solar Pro4: 39.9 (#135)

| Benchmark | Grok Build 0.1 | Solar Pro4 |
|---|---|---|
| LMArena WebDev | — | 1371 |
| SciCode | 50.2% | — |
| LMArena Coding | — | 1439 |

## Agentic & Tool Use

- Grok Build 0.1: 22.5 (#122)
- Solar Pro4: —

| Benchmark | Grok Build 0.1 | Solar Pro4 |
|---|---|---|
| GBAEval | 2.4% | — |

## Reasoning

- Grok Build 0.1: 31.3 (#73)
- Solar Pro4: 27.3 (#107)

| Benchmark | Grok Build 0.1 | Solar Pro4 |
|---|---|---|
| CritPt | 9.1% | — |
| LMArena Hard Prompts | — | 1398 |

## Math

- Grok Build 0.1: —
- Solar Pro4: 36.1 (#129)

| Benchmark | Grok Build 0.1 | Solar Pro4 |
|---|---|---|
| LMArena Math | — | 1418 |

## Knowledge

- Grok Build 0.1: —
- Solar Pro4: 39.0 (#128)

| Benchmark | Grok Build 0.1 | Solar Pro4 |
|---|---|---|
| LMArena Expert | — | 1421 |

## Multilingual

- Grok Build 0.1: —
- Solar Pro4: 49.0 (#134)

| Benchmark | Grok Build 0.1 | Solar Pro4 |
|---|---|---|
| LMArena Non-English | — | 1362 |
| LMArena Chinese | — | 1417 |
| LMArena French | — | 1403 |
| LMArena German | — | 1351 |
| LMArena Japanese | — | 1300 |
| LMArena Korean | — | 1383 |
| LMArena Russian | — | 1360 |
| LMArena Spanish | — | 1408 |

## Instruction Following

- Grok Build 0.1: —
- Solar Pro4: 72.8 (#128)

| Benchmark | Grok Build 0.1 | Solar Pro4 |
|---|---|---|
| LMArena Instruction Following | — | 1376 |

## Long Context

- Grok Build 0.1: —
- Solar Pro4: 42.0 (#125)

| Benchmark | Grok Build 0.1 | Solar Pro4 |
|---|---|---|
| LMArena Longer Query | — | 1379 |

## Writing & Preference

- Grok Build 0.1: —
- Solar Pro4: 56.7 (#133)

| Benchmark | Grok Build 0.1 | Solar Pro4 |
|---|---|---|
| LMArena Text | — | 1386 |
| LMArena Creative Writing | — | 1313 |
| LMArena Multi-Turn | — | 1391 |

## FAQ

### Is Grok Build 0.1 better than Solar Pro4?

Solar Pro4 is the stronger model overall, scoring 41.5 to 35.8 on the Noometry Index.

### Which is cheaper, Grok Build 0.1 or Solar Pro4?

Solar Pro4 is cheaper. It lists at $0.30 per million input tokens and $1.20 per million output tokens; Grok Build 0.1 lists at $1 and $2.

### Is Grok Build 0.1 or Solar Pro4 better for coding?

Grok Build 0.1 scores higher on coding benchmarks: 42.5 versus 39.9 in the Noometry coding category.

### Which has the bigger context window?

Solar Pro4 does, with 524K tokens against 256K.

### How many benchmarks do Grok Build 0.1 and Solar Pro4 share?

0 benchmarks have published results for both models. Grok Build 0.1 has 3 scored results on Noometry and Solar Pro4 has 18.