Model comparison
Grok Build 0.1 vs Solar Pro4
Solar Pro4 is the stronger model overall, scoring 42.1 to 36.4 on the Noometry Index.
Last verified . 0 shared benchmarks.
UpstageSummary
- The widest gap is in reasoning, where Grok Build 0.1 leads 32.2 to 28.5.
- 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.
Side by side
| Grok Build 0.1 | Solar Pro4 | |
|---|---|---|
| Provider | xAI | Upstage |
| Noometry Index | 36.4 | 42.1 |
| Released | 2026-04-16 | 2026-08-06 |
| Weights | Proprietary | Proprietary |
| Context window | 256K | 524K |
| Max output | 256K | 131K |
| Input $ / M tokens | $1 | $0.30 |
| Output $ / M tokens | $2 | $1.20 |
| Results tracked | 3 | 18 |
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Category by category
Coding Grok Build 0.1 leads
Grok Build 0.1: 43.1 (#91), Solar Pro4: 40.1 (#149)
| Benchmark | Grok Build 0.1 | Solar Pro4 |
|---|---|---|
| LMArena WebDev | — | 1371 |
| SciCode | 50.2% | — |
| LMArena Coding | — | 1437 |
Agentic & Tool Use Not comparable
Grok Build 0.1: 22.7 (#129), Solar Pro4: —
| Benchmark | Grok Build 0.1 | Solar Pro4 |
|---|---|---|
| GBAEval | 2.4% | — |
Reasoning Grok Build 0.1 leads
Grok Build 0.1: 32.2 (#77), Solar Pro4: 28.5 (#104)
| Benchmark | Grok Build 0.1 | Solar Pro4 |
|---|---|---|
| CritPt | 9.1% | — |
| LMArena Hard Prompts | — | 1399 |
Math Not comparable
Grok Build 0.1: —, Solar Pro4: 38.8 (#128)
| Benchmark | Grok Build 0.1 | Solar Pro4 |
|---|---|---|
| LMArena Math | — | 1416 |
Knowledge Not comparable
Grok Build 0.1: —, Solar Pro4: 39.8 (#129)
| Benchmark | Grok Build 0.1 | Solar Pro4 |
|---|---|---|
| LMArena Expert | — | 1427 |
Multilingual Not comparable
Grok Build 0.1: —, Solar Pro4: 48.7 (#139)
| Benchmark | Grok Build 0.1 | Solar Pro4 |
|---|---|---|
| LMArena Non-English | — | 1361 |
| LMArena Chinese | — | 1415 |
| LMArena French | — | 1397 |
| LMArena German | — | 1364 |
| LMArena Japanese | — | 1309 |
| LMArena Korean | — | 1382 |
| LMArena Russian | — | 1360 |
| LMArena Spanish | — | 1401 |
Instruction Following Not comparable
Grok Build 0.1: —, Solar Pro4: 72.7 (#132)
| Benchmark | Grok Build 0.1 | Solar Pro4 |
|---|---|---|
| LMArena Instruction Following | — | 1377 |
Long Context Not comparable
Grok Build 0.1: —, Solar Pro4: 42.1 (#130)
| Benchmark | Grok Build 0.1 | Solar Pro4 |
|---|---|---|
| LMArena Longer Query | — | 1381 |
Writing & Preference Not comparable
Grok Build 0.1: —, Solar Pro4: 56.5 (#138)
| Benchmark | Grok Build 0.1 | Solar Pro4 |
|---|---|---|
| LMArena Text | — | 1386 |
| LMArena Creative Writing | — | 1316 |
| LMArena Multi-Turn | — | 1385 |
Frequently asked questions
Is Grok Build 0.1 better than Solar Pro4?
Solar Pro4 is the stronger model overall, scoring 42.1 to 36.4 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: 43.1 versus 40.1 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.