Model comparison
Mercury vs Solar Pro4
Solar Pro4 is the stronger model overall, scoring 42.1 to 37.6 on the Noometry Index.
Last verified . 8 shared benchmarks.
UpstageSummary
- They share 8 benchmarks with published results for both. Mercury scores higher in 0 categories and Solar Pro4 in 6 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Solar Pro4 leads 28.5 to 17.5.
Side by side
| Mercury | Solar Pro4 | |
|---|---|---|
| Provider | Inception | Upstage |
| Noometry Index | 37.6 | 42.1 |
| Released | — | 2026-08-06 |
| Weights | Proprietary | Proprietary |
| Context window | — | 524K |
| Max output | — | 131K |
| Input $ / M tokens | — | $0.30 |
| Output $ / M tokens | — | $1.20 |
| Results tracked | 9 | 18 |
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Category by category
Coding Solar Pro4 leads
Mercury: 38.7 (#170), Solar Pro4: 40.1 (#149)
| Benchmark | Mercury | Solar Pro4 |
|---|---|---|
| LMArena Coding | 1322 | 1437 |
| LMArena WebDev | — | 1371 |
Reasoning Solar Pro4 leads
Mercury: 17.5 (#293), Solar Pro4: 28.5 (#104)
| Benchmark | Mercury | Solar Pro4 |
|---|---|---|
| LMArena Hard Prompts | 1285 | 1399 |
| Kagi LLM Benchmark | 21.6% | — |
Math Not comparable
Mercury: —, Solar Pro4: 38.8 (#128)
| Benchmark | Mercury | Solar Pro4 |
|---|---|---|
| LMArena Math | — | 1416 |
Knowledge Not comparable
Mercury: —, Solar Pro4: 39.8 (#129)
| Benchmark | Mercury | Solar Pro4 |
|---|---|---|
| LMArena Expert | — | 1427 |
Multilingual Solar Pro4 leads
Mercury: 41.6 (#206), Solar Pro4: 48.7 (#139)
| Benchmark | Mercury | Solar Pro4 |
|---|---|---|
| LMArena Non-English | 1260 | 1361 |
| LMArena Chinese | — | 1415 |
| LMArena French | — | 1397 |
| LMArena German | — | 1364 |
| LMArena Japanese | — | 1309 |
| LMArena Korean | — | 1382 |
| LMArena Russian | — | 1360 |
| LMArena Spanish | — | 1401 |
Instruction Following Solar Pro4 leads
Mercury: 65.2 (#224), Solar Pro4: 72.7 (#132)
| Benchmark | Mercury | Solar Pro4 |
|---|---|---|
| LMArena Instruction Following | 1239 | 1377 |
Long Context Solar Pro4 leads
Mercury: 38.4 (#198), Solar Pro4: 42.1 (#130)
| Benchmark | Mercury | Solar Pro4 |
|---|---|---|
| LMArena Longer Query | 1266 | 1381 |
Writing & Preference Solar Pro4 leads
Mercury: 46.2 (#221), Solar Pro4: 56.5 (#138)
| Benchmark | Mercury | Solar Pro4 |
|---|---|---|
| LMArena Text | 1282 | 1386 |
| LMArena Creative Writing | 1191 | 1316 |
| LMArena Multi-Turn | 1282 | 1385 |
Frequently asked questions
Is Mercury better than Solar Pro4?
Solar Pro4 is the stronger model overall, scoring 42.1 to 37.6 on the Noometry Index.
Is Mercury or Solar Pro4 better for coding?
Solar Pro4 scores higher on coding benchmarks: 40.1 versus 38.7 in the Noometry coding category.
How many benchmarks do Mercury and Solar Pro4 share?
8 benchmarks have published results for both models. Mercury has 9 scored results on Noometry and Solar Pro4 has 18.