Model comparison
o4-mini vs Solar Pro4
o4-mini and Solar Pro4 score almost the same on the Noometry Index (41.6 vs 42.1), so choose on price, context window or the category you care about most.
Last verified . 17 shared benchmarks.
UpstageSummary
- They share 17 benchmarks with published results for both. o4-mini scores higher in 5 categories and Solar Pro4 in 3 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Solar Pro4 leads 28.5 to 24.6.
- Solar Pro4 is cheaper at $0.30 / $1.20 per million input/output tokens, against $1.10 / $4.40 for o4-mini.
- Solar Pro4 accepts more context: 524K tokens versus 200K.
Side by side
| o4-mini | Solar Pro4 | |
|---|---|---|
| Provider | OpenAI | Upstage |
| Noometry Index | 41.6 | 42.1 |
| Released | 2025-04-16 | 2026-08-06 |
| Weights | Proprietary | Proprietary |
| Context window | 200K | 524K |
| Max output | 100K | 131K |
| Input $ / M tokens | $1.10 | $0.30 |
| Output $ / M tokens | $4.40 | $1.20 |
| Results tracked | 60 | 18 |
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Category by category
Coding Too close to call
o4-mini: 40.9 (#127), Solar Pro4: 40.1 (#149)
| Benchmark | o4-mini | Solar Pro4 |
|---|---|---|
| LMArena Coding | 1368 | 1437 |
| SWE-bench Verified (bash only) | 45% | — |
| Aider Polyglot | 72% | — |
| LMArena WebDev | — | 1371 |
| GSO | 3.6% | — |
| WeirdML | 52.6% | — |
| CadEval | 62% | — |
| ALE-Bench | 826.17 | — |
| AlgoTune | 1.72 | — |
Agentic & Tool Use Not comparable
o4-mini: 32.6 (#61), Solar Pro4: —
| Benchmark | o4-mini | Solar Pro4 |
|---|---|---|
| Berkeley Function Calling Leaderboard | 53.2% | — |
| GDPval | 25.3% | — |
| METR Time Horizons | 63.9% | — |
Reasoning Solar Pro4 leads
o4-mini: 24.6 (#162), Solar Pro4: 28.5 (#104)
| Benchmark | o4-mini | Solar Pro4 |
|---|---|---|
| LMArena Hard Prompts | 1351 | 1399 |
| ARC-AGI-2 | 6.1% | — |
| SimpleBench | 38.7% | — |
| Kagi LLM Benchmark | 67.6% | — |
| ARC-AGI-1 | 58.7% | — |
| CritPt | 0.6% | — |
| Chess Puzzles | 26% | — |
| EnigmaEval | 9.2% | — |
| Mystery Game Puzzles | 5% | — |
| DTBench | 77.6% | — |
| LMCA | 26.5% | — |
| Epoch Capabilities Index | 145.64 | — |
| ForecastBench | 61.8 | — |
Math o4-mini leads
o4-mini: 40.8 (#89), Solar Pro4: 38.8 (#128)
| Benchmark | o4-mini | Solar Pro4 |
|---|---|---|
| LMArena Math | 1389 | 1416 |
| FrontierMath (Tiers 1-3) | 36.1% | — |
| FrontierMath Tier 4 | 4.9% | — |
| OTIS Mock AIME 2024-2025 | 81.7% | — |
| Omni-MATH | 72% | — |
| MATH Level 5 | 97.8% | — |
| FrontierMath (Feb 2025 set) | 24.8% | — |
| FrontierMath Tier 4 (v1) | 6.3% | — |
Knowledge o4-mini leads
o4-mini: 43.6 (#91), Solar Pro4: 39.8 (#129)
| Benchmark | o4-mini | Solar Pro4 |
|---|---|---|
| LMArena Expert | 1343 | 1427 |
| GPQA Diamond | 79.6% | — |
| Humanity's Last Exam | 18.1% | — |
| SimpleQA Verified | 19.6% | — |
| MMLU-Pro | 82% | — |
| Confabulations | 15.8% | — |
| Vectara Hallucination Rate | 18.6% | — |
| GPQA (HELM) | 73.5% | — |
Multimodal Not comparable
o4-mini: 40.2 (#49), Solar Pro4: —
| Benchmark | o4-mini | Solar Pro4 |
|---|---|---|
| LMArena Vision | 1194 | — |
| GeoBench | 64% | — |
| VPCT | 57.5% | — |
Multilingual Solar Pro4 leads
o4-mini: 47.0 (#154), Solar Pro4: 48.7 (#139)
| Benchmark | o4-mini | Solar Pro4 |
|---|---|---|
| LMArena Non-English | 1337 | 1361 |
| LMArena Chinese | 1354 | 1415 |
| LMArena French | 1364 | 1397 |
| LMArena German | 1336 | 1364 |
| LMArena Japanese | 1308 | 1309 |
| LMArena Korean | 1312 | 1382 |
| LMArena Russian | 1334 | 1360 |
| LMArena Spanish | 1347 | 1401 |
Instruction Following o4-mini leads
o4-mini: 75.2 (#68), Solar Pro4: 72.7 (#132)
| Benchmark | o4-mini | Solar Pro4 |
|---|---|---|
| LMArena Instruction Following | 1321 | 1377 |
| IFEval | 92.8% | — |
Long Context o4-mini leads
o4-mini: 45.5 (#33), Solar Pro4: 42.1 (#130)
| Benchmark | o4-mini | Solar Pro4 |
|---|---|---|
| LMArena Longer Query | 1315 | 1381 |
| Fiction.LiveBench | 77.8% | — |
Writing & Preference Solar Pro4 leads
o4-mini: 54.0 (#152), Solar Pro4: 56.5 (#138)
| Benchmark | o4-mini | Solar Pro4 |
|---|---|---|
| LMArena Text | 1353 | 1386 |
| LMArena Creative Writing | 1294 | 1316 |
| LMArena Multi-Turn | 1350 | 1385 |
| Short-Story Creative Writing | 75% | — |
| WildBench | 85.4% | — |
Frequently asked questions
Is o4-mini better than Solar Pro4?
o4-mini and Solar Pro4 score almost the same on the Noometry Index (41.6 vs 42.1), so choose on price, context window or the category you care about most.
Which is cheaper, o4-mini or Solar Pro4?
Solar Pro4 is cheaper. It lists at $0.30 per million input tokens and $1.20 per million output tokens; o4-mini lists at $1.10 and $4.40.
Is o4-mini or Solar Pro4 better for coding?
They score almost the same on coding (40.9 vs 40.1); test both on your own repository before choosing.
Which has the bigger context window?
Solar Pro4 does, with 524K tokens against 200K.
How many benchmarks do o4-mini and Solar Pro4 share?
17 benchmarks have published results for both models. o4-mini has 60 scored results on Noometry and Solar Pro4 has 18.