# Gemma 4 12B vs Solar Open 2

> Side-by-side benchmark comparison for Gemma 4 12B and Solar Open 2 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemma-4-12b-vs-solar-open-2
- Last updated: September 10, 2026

- Shared sourced benchmarks: 5
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Pick Gemma 4 12B if you want the stronger benchmark profile. Solar Open 2 only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Gemma 4 12B leads overall 42.72 to 0.
- The biggest single benchmark swing is HLE w/o tools in Knowledge, with scores of 5.2% and 28.8%.
- Solar Open 2 also has the larger context window at 1M.

## Model Snapshot

| Property | Gemma 4 12B | Solar Open 2 |
|----------|----------|----------|
| Creator | Google | Upstage |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 256K | 1M |
| Overall Score | 42.72 | null |
| Benchmarks Covered | 12 | 11 |
| Pricing (input/output) | N/A | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Coming soon
- Gemma 4 12B public-lane score: 44.9 (Estimated · #87/152)
- Solar Open 2 public-lane score: Coming soon

| Benchmark | Gemma 4 12B | Solar Open 2 | Winner |
|-----------|-----------|-----------|--------|
| terminalBenchHard | Coming soon | 28.3% | Coming soon |
| APEX-Agents | Coming soon | 16.6% | Coming soon |
| MCP Atlas | Coming soon | 58.2% | Coming soon |

### Coding

- Winner: Coming soon
- Gemma 4 12B public-lane score: 44 (Estimated · #95/151)
- Solar Open 2 public-lane score: Coming soon

| Benchmark | Gemma 4 12B | Solar Open 2 | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench v6 | 72.0% | 92.4% | Solar Open 2 |
| SWE-bench Verified | Coming soon | 70.4% | Coming soon |

### Multimodal & Grounded

- Winner: Coming soon
- Gemma 4 12B public-lane score: 26.1 (#44/48)
- Solar Open 2 public-lane score: Coming soon

| Benchmark | Gemma 4 12B | Solar Open 2 | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 69.1% | Coming soon | Coming soon |
| MathVision | 79.7% | Coming soon | Coming soon |
| MedXpertQA (MM) | 48.7% | Coming soon | Coming soon |

### Reasoning

- Winner: Coming soon
- Gemma 4 12B public-lane score: 33.7 (Unranked · 4 rankable rows)
- Solar Open 2 public-lane score: Coming soon

| Benchmark | Gemma 4 12B | Solar Open 2 | Winner |
|-----------|-----------|-----------|--------|
| BBH | 53% | Coming soon | Coming soon |
| MRCRv2 | 43.4% | Coming soon | Coming soon |

### Knowledge

- Winner: Coming soon
- Gemma 4 12B public-lane score: 38.9 (Supported · #141/183)
- Solar Open 2 public-lane score: Coming soon

| Benchmark | Gemma 4 12B | Solar Open 2 | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 78.8% | Coming soon | Coming soon |
| GPQA-D | 78.8% | 86.3% | Solar Open 2 |
| MMLU-Pro | 77.2% | 86.2% | Solar Open 2 |
| HLE w/o tools | 5.2% | 28.8% | Solar Open 2 |
| MMMLU | 83.4% | Coming soon | Coming soon |

### Instruction Following

- Winner: Coming soon
- Gemma 4 12B public-lane score: 90.1 (#21/123)
- Solar Open 2 public-lane score: Coming soon

| Benchmark | Gemma 4 12B | Solar Open 2 | Winner |
|-----------|-----------|-----------|--------|
| IFBench | Coming soon | 80% | Coming soon |

### Mathematics

- Winner: Coming soon
- Gemma 4 12B public-lane score: 57.6 (Unranked · 1 rankable row)
- Solar Open 2 public-lane score: Coming soon

| Benchmark | Gemma 4 12B | Solar Open 2 | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | 77.5% | 95.7% | Solar Open 2 |
| HMMT Feb 2026 | Coming soon | 93.9% | Coming soon |

## FAQ

### Which is better overall, Gemma 4 12B or Solar Open 2?

Gemma 4 12B is ahead overall on BenchLM right now.

### How many benchmarks does Gemma 4 12B cover on BenchLM?

Gemma 4 12B currently has 12 sourced benchmark scores on BenchLM.

### How many benchmarks does Solar Open 2 cover on BenchLM?

Solar Open 2 currently has 11 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Gemma 4 12B vs Gemma 4 26B A4B](/compare/gemma-4-12b-vs-gemma-4-26b-a4b)
- [Solar Open 2 vs Gemma 4 26B A4B](/compare/gemma-4-26b-a4b-vs-solar-open-2)
- [Gemma 4 12B vs Gemma 4 31B](/compare/gemma-4-12b-vs-gemma-4-31b)
- [Solar Open 2 vs Gemma 4 31B](/compare/gemma-4-31b-vs-solar-open-2)

## Explore More

- [Gemma 4 12B profile](/models/gemma-4-12b)
- [Solar Open 2 profile](/models/solar-open-2)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)