# A.X K2 vs Gemma 4 12B

> Side-by-side benchmark comparison for A.X K2 and Gemma 4 12B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/a-x-k2-vs-gemma-4-12b
- Last updated: September 10, 2026

- Shared sourced benchmarks: 3
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Evidence is too thin for a benchmark verdict: A.X K2 and Gemma 4 12B share only 3 sourced benchmark rows.

## Summary

- Only 3 shared sourced benchmark rows are available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- A.X K2 has the larger published context window at 262K.

## Model Snapshot

| Property | A.X K2 | Gemma 4 12B |
|----------|----------|----------|
| Creator | SK Telecom | Google |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 262K | 256K |
| Independent public score (not head-to-head) | null | 42.72 |
| Benchmarks Covered | 10 | 12 |
| Pricing (input/output) | $0.00 / $0.00 | N/A |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- A.X K2 public-lane score: Coming soon
- Gemma 4 12B public-lane score: 44.9 (Estimated · #87/152)

| Benchmark | A.X K2 | Gemma 4 12B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 36.0% | Coming soon | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- A.X K2 public-lane score: Coming soon
- Gemma 4 12B public-lane score: 44 (Estimated · #95/151)

| Benchmark | A.X K2 | Gemma 4 12B | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench v6 | 84.0% | 72.0% | A.X K2 |
| SciCode | 41% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 36.0% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- A.X K2 public-lane score: Coming soon
- Gemma 4 12B public-lane score: 26.1 (#44/48)

| Benchmark | A.X K2 | Gemma 4 12B | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | Coming soon | 69.1% | Coming soon |
| MathVision | Coming soon | 79.7% | Coming soon |
| MedXpertQA (MM) | Coming soon | 48.7% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- A.X K2 public-lane score: Coming soon
- Gemma 4 12B public-lane score: 33.7 (Unranked · 4 rankable rows)

| Benchmark | A.X K2 | Gemma 4 12B | Winner |
|-----------|-----------|-----------|--------|
| BBH | Coming soon | 53% | Coming soon |
| MRCRv2 | Coming soon | 43.4% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- A.X K2 public-lane score: Coming soon
- Gemma 4 12B public-lane score: 38.9 (Supported · #141/183)

| Benchmark | A.X K2 | Gemma 4 12B | Winner |
|-----------|-----------|-----------|--------|
| HLE | 27.8% | Coming soon | Coming soon |
| GPQA-D | 85.6% | 78.8% | A.X K2 |
| GPQA | Coming soon | 78.8% | Coming soon |
| MMLU-Pro | Coming soon | 77.2% | Coming soon |
| HLE w/o tools | Coming soon | 5.2% | Coming soon |
| MMMLU | Coming soon | 83.4% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- A.X K2 public-lane score: Coming soon
- Gemma 4 12B public-lane score: 90.1 (#21/123)

| Benchmark | A.X K2 | Gemma 4 12B | Winner |
|-----------|-----------|-----------|--------|
| IFBench | 75.9% | Coming soon | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- A.X K2 public-lane score: Coming soon
- Gemma 4 12B public-lane score: 57.6 (Unranked · 1 rankable row)

| Benchmark | A.X K2 | Gemma 4 12B | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | 97.1% | 77.5% | A.X K2 |
| Apex | 45.8% | Coming soon | Coming soon |
| Apex Shortlist | 88.6% | Coming soon | Coming soon |

## FAQ

### Is there enough evidence to pick between A.X K2 and Gemma 4 12B?

Not yet. The models share only 3 sourced benchmark rows, so this mirror reports the available measurements and metadata without naming a broad winner.

### What can I compare safely on this page?

Published pricing, context windows, model type, and individual shared benchmark rows are directly comparable. Independent overall scores and non-overlapping benchmark coverage are labeled separately and should not be read as a controlled head-to-head result.

## Related Comparisons

- [A.X K2 vs A.X series](/compare/a-x-k2-vs-skt-ax)
- [Gemma 4 12B vs A.X series](/compare/gemma-4-12b-vs-skt-ax)
- [A.X K2 vs Gemma 4 26B A4B](/compare/a-x-k2-vs-gemma-4-26b-a4b)
- [Gemma 4 12B vs Gemma 4 26B A4B](/compare/gemma-4-12b-vs-gemma-4-26b-a4b)

## Explore More

- [A.X K2 profile](/models/a-x-k2)
- [Gemma 4 12B profile](/models/gemma-4-12b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)