Model comparison
Solar Pro4 vs Sonar
Solar Pro4 is the stronger model overall, scoring 42.1 to 38.5 on the Noometry Index.
Last verified . 0 shared benchmarks.
Upstage
PerplexitySummary
- The widest gap is in reasoning, where Solar Pro4 leads 28.5 to 21.1.
- Solar Pro4 is cheaper at $0.30 / $1.20 per million input/output tokens, against $1 / $1 for Sonar.
- Solar Pro4 accepts more context: 524K tokens versus 128K.
Side by side
| Solar Pro4 | Sonar | |
|---|---|---|
| Provider | Upstage | Perplexity |
| Noometry Index | 42.1 | 38.5 |
| Released | 2026-08-06 | 2024-01-01 |
| Weights | Proprietary | Proprietary |
| Context window | 524K | 128K |
| Max output | 131K | 4K |
| Input $ / M tokens | $0.30 | $1 |
| Output $ / M tokens | $1.20 | $1 |
| Results tracked | 18 | 7 |
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Category by category
Coding Solar Pro4 leads
Solar Pro4: 40.1 (#149), Sonar: 35.7 (#221)
| Benchmark | Solar Pro4 | Sonar |
|---|---|---|
| LMArena WebDev | 1371 | — |
| LiveBench Coding | — | 35.1% |
| LMArena Coding | 1437 | — |
Reasoning Solar Pro4 leads
Solar Pro4: 28.5 (#104), Sonar: 21.1 (#227)
| Benchmark | Solar Pro4 | Sonar |
|---|---|---|
| LiveBench Reasoning | — | 46.3% |
| LMArena Hard Prompts | 1399 | — |
| LiveBench Data Analysis | — | 37.9% |
| LiveBench | — | 46.9% |
Math Solar Pro4 leads
Solar Pro4: 38.8 (#128), Sonar: 33.7 (#200)
| Benchmark | Solar Pro4 | Sonar |
|---|---|---|
| LiveBench Math | — | 41.6% |
| LMArena Math | 1416 | — |
Knowledge Not comparable
Solar Pro4: 39.8 (#129), Sonar: —
| Benchmark | Solar Pro4 | Sonar |
|---|---|---|
| LMArena Expert | 1427 | — |
Multilingual Not comparable
Solar Pro4: 48.7 (#139), Sonar: —
| Benchmark | Solar Pro4 | Sonar |
|---|---|---|
| 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 Solar Pro4 leads
Solar Pro4: 72.7 (#132), Sonar: 71.4 (#150)
| Benchmark | Solar Pro4 | Sonar |
|---|---|---|
| LiveBench Instruction Following | — | 76.2% |
| LMArena Instruction Following | 1377 | — |
Long Context Not comparable
Solar Pro4: 42.1 (#130), Sonar: —
| Benchmark | Solar Pro4 | Sonar |
|---|---|---|
| LMArena Longer Query | 1381 | — |
Writing & Preference Solar Pro4 leads
Solar Pro4: 56.5 (#138), Sonar: 52.6 (#167)
| Benchmark | Solar Pro4 | Sonar |
|---|---|---|
| LMArena Text | 1386 | — |
| LMArena Creative Writing | 1316 | — |
| LMArena Multi-Turn | 1385 | — |
| LiveBench Language | — | 44.1% |
Frequently asked questions
Is Solar Pro4 better than Sonar?
Solar Pro4 is the stronger model overall, scoring 42.1 to 38.5 on the Noometry Index.
Which is cheaper, Solar Pro4 or Sonar?
Solar Pro4 is cheaper. It lists at $0.30 per million input tokens and $1.20 per million output tokens; Sonar lists at $1 and $1.
Is Solar Pro4 or Sonar better for coding?
Solar Pro4 scores higher on coding benchmarks: 40.1 versus 35.7 in the Noometry coding category.
Which has the bigger context window?
Solar Pro4 does, with 524K tokens against 128K.
How many benchmarks do Solar Pro4 and Sonar share?
0 benchmarks have published results for both models. Solar Pro4 has 18 scored results on Noometry and Sonar has 7.