Model comparison
Gemini 3.1 Pro Preview vs Solar Pro 3
Gemini 3.1 Pro Preview has enough public results to be ranked (#23); Solar Pro 3 does not yet, so treat this comparison as directional.
Last verified . 2 shared benchmarks.
Google
UpstageSummary
- They share 2 benchmarks with published results for both. Gemini 3.1 Pro Preview scores higher in 2 categories and Solar Pro 3 in 0 categories; 2 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Gemini 3.1 Pro Preview leads 71.7 to 22.4.
- The biggest single-benchmark swing is SciCode: 58.9% for Gemini 3.1 Pro Preview and 24.7% for Solar Pro 3.
- Solar Pro 3 is cheaper at $0.25 / $0.25 per million input/output tokens, against $2 / $12 for Gemini 3.1 Pro Preview.
- Gemini 3.1 Pro Preview accepts more context: 1.05M tokens versus 131K.
Side by side
| Gemini 3.1 Pro Preview | Solar Pro 3 | |
|---|---|---|
| Provider | Upstage | |
| Noometry Index | 56.7 | 33.9 |
| Released | 2026-02-19 | 2026-01 |
| Weights | Proprietary | Proprietary |
| Context window | 1.05M | 131K |
| Max output | 66K | 8K |
| Input $ / M tokens | $2 | $0.25 |
| Output $ / M tokens | $12 | $0.25 |
| Results tracked | 71 | 2 |
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Category by category
Coding Gemini 3.1 Pro Preview leads
Gemini 3.1 Pro Preview: 42.5 (#99), Solar Pro 3: 34.8
| Benchmark | Gemini 3.1 Pro Preview | Solar Pro 3 |
|---|---|---|
| SciCode | 58.9% | 24.7% |
| SWE-bench Verified | 75.6% | — |
| DeepSWE | 11.7% | — |
| LMArena WebDev | 1447 | — |
| GSO | 22.6% | — |
| WeirdML | 72.1% | — |
| LMArena Coding | 1484 | — |
| MirrorCode | 8.9% | — |
| ALE-Bench | 1,161 | — |
| AlgoTune | 2.02 | — |
Agentic & Tool Use Not comparable
Gemini 3.1 Pro Preview: 37.7 (#34), Solar Pro 3: —
| Benchmark | Gemini 3.1 Pro Preview | Solar Pro 3 |
|---|---|---|
| Terminal-Bench | 80.2% | — |
| APEX-Agents | 35.3% | — |
| τ²-bench Banking | 26% | — |
| DeepResearch Bench | 47.8% | — |
| PostTrainBench | 22% | — |
| BALROG | 57% | — |
| ExploitBench | 26.1% | — |
| GBAEval | 0.8% | — |
| GDP.pdf | 17% | — |
| LMArena Search | 1211 | — |
| METR Time Horizons | 77% | — |
| Vending-Bench 2 | 3,774 | — |
Reasoning Gemini 3.1 Pro Preview leads
Gemini 3.1 Pro Preview: 71.7 (#12), Solar Pro 3: 22.4
| Benchmark | Gemini 3.1 Pro Preview | Solar Pro 3 |
|---|---|---|
| CritPt | 17.7% | 0% |
| ARC-AGI-2 | 77.1% | — |
| SimpleBench | 79.6% | — |
| NYT Connections (extended) | 97.4% | — |
| ARC-AGI-1 | 98% | — |
| Chess Puzzles | 55% | — |
| EnigmaEval | 36.8% | — |
| Thematic Generalization | 79.4% | — |
| EBR-Bench | 14.3% | — |
| LMArena Hard Prompts | 1485 | — |
| Mystery Game Puzzles | 34% | — |
| DTBench | 97.1% | — |
| LMCA | 53.8% | — |
| Epoch Capabilities Index | 154.77 | — |
| ForecastBench | 59 | — |
Math Not comparable
Gemini 3.1 Pro Preview: 62.1 (#34), Solar Pro 3: —
| Benchmark | Gemini 3.1 Pro Preview | Solar Pro 3 |
|---|---|---|
| FrontierMath (Tiers 1-3) | 59.6% | — |
| FrontierMath Tier 4 | 26.8% | — |
| MathArena Final-Answer Competitions | 86.5% | — |
| OTIS Mock AIME 2024-2025 | 95.6% | — |
| ProofBench | 26% | — |
| LMArena Math | 1485 | — |
| FrontierMath (Feb 2025 set) | 36.9% | — |
| FrontierMath Tier 4 (v1) | 16.7% | — |
Knowledge Not comparable
Gemini 3.1 Pro Preview: 71.8 (#3), Solar Pro 3: —
| Benchmark | Gemini 3.1 Pro Preview | Solar Pro 3 |
|---|---|---|
| GPQA Diamond | 94.4% | — |
| Humanity's Last Exam | 46.4% | — |
| SimpleQA Verified | 73.5% | — |
| Vectara Hallucination Rate | 10.4% | — |
| LMArena Expert | 1485 | — |
Multimodal Not comparable
Gemini 3.1 Pro Preview: 37.9 (#69), Solar Pro 3: —
| Benchmark | Gemini 3.1 Pro Preview | Solar Pro 3 |
|---|---|---|
| LMArena Vision | 1296 | — |
| Blueprint-Bench 2 | 26.5% | — |
| Furniture Assembly | 26.7% | — |
| LMArena Document | 1444 | — |
Multilingual Not comparable
Gemini 3.1 Pro Preview: 57.0 (#12), Solar Pro 3: —
| Benchmark | Gemini 3.1 Pro Preview | Solar Pro 3 |
|---|---|---|
| LMArena Non-English | 1477 | — |
| LMArena Chinese | 1529 | — |
| LMArena French | 1487 | — |
| LMArena German | 1491 | — |
| LMArena Japanese | 1493 | — |
| LMArena Korean | 1455 | — |
| LMArena Russian | 1498 | — |
| LMArena Spanish | 1479 | — |
Instruction Following Not comparable
Gemini 3.1 Pro Preview: 77.0 (#32), Solar Pro 3: —
| Benchmark | Gemini 3.1 Pro Preview | Solar Pro 3 |
|---|---|---|
| LMArena Instruction Following | 1466 | — |
Long Context Not comparable
Gemini 3.1 Pro Preview: 47.4 (#18), Solar Pro 3: —
| Benchmark | Gemini 3.1 Pro Preview | Solar Pro 3 |
|---|---|---|
| CL-bench | 20.8% | — |
| CL-bench Life | 16.9% | — |
| LMArena Longer Query | 1483 | — |
Writing & Preference Not comparable
Gemini 3.1 Pro Preview: 66.1 (#37), Solar Pro 3: —
| Benchmark | Gemini 3.1 Pro Preview | Solar Pro 3 |
|---|---|---|
| LMArena Text | 1481 | — |
| LMArena Creative Writing | 1482 | — |
| EQ-Bench Creative Writing | 1491 | — |
| EQ-Bench 4 | 1142 | — |
| LMArena Multi-Turn | 1488 | — |
Frequently asked questions
Is Gemini 3.1 Pro Preview better than Solar Pro 3?
Gemini 3.1 Pro Preview has enough public results to be ranked (#23); Solar Pro 3 does not yet, so treat this comparison as directional.
Which is cheaper, Gemini 3.1 Pro Preview or Solar Pro 3?
Solar Pro 3 is cheaper. It lists at $0.25 per million input tokens and $0.25 per million output tokens; Gemini 3.1 Pro Preview lists at $2 and $12.
Is Gemini 3.1 Pro Preview or Solar Pro 3 better for coding?
Gemini 3.1 Pro Preview scores higher on coding benchmarks: 42.5 versus 34.8 in the Noometry coding category.
Which has the bigger context window?
Gemini 3.1 Pro Preview does, with 1.05M tokens against 131K.
How many benchmarks do Gemini 3.1 Pro Preview and Solar Pro 3 share?
2 benchmarks have published results for both models. Gemini 3.1 Pro Preview has 71 scored results on Noometry and Solar Pro 3 has 2.