# A.X K2 vs Nemotron 3.5 Super VL 120B A12B

> Side-by-side benchmark comparison for A.X K2 and Nemotron 3.5 Super VL 120B A12B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/a-x-k2-vs-nemotron-3-5-super-vl-120b-a12b
- Last updated: October 15, 2026

- Shared sourced benchmarks: 6
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

A.X K2 leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- A.X K2 has the higher overall point estimate 51 to 49.51. Conditional score ranges do not establish rank confidence.
- The biggest single benchmark swing is Terminal-Bench 2.1 in Agentic, with scores of 36.0% and 66.7%.
- Nemotron 3.5 Super VL 120B A12B is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Nemotron 3.5 Super VL 120B A12B also has the larger context window at 1M.

## Model Snapshot

| Property | A.X K2 | Nemotron 3.5 Super VL 120B A12B |
|----------|----------|----------|
| Creator | SK Telecom | NVIDIA |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 262K | 1M |
| Overall Score | null | 49.51 |
| Benchmarks Covered | 10 | 19 |
| Pricing (input/output) | $0.00 / $0.00 | Pricing unavailable / Pricing unavailable |

## Category Breakdown

### Agentic

- Winner: Not comparable
- A.X K2 public-lane score: Coming soon
- Nemotron 3.5 Super VL 120B A12B public-lane score: 44.2 (Estimated · #61/127)

| Benchmark | A.X K2 | Nemotron 3.5 Super VL 120B A12B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 36.0% | 66.7% | Nemotron 3.5 Super VL 120B A12B |
| τ²-bench Airline | Coming soon | 76.5% | Coming soon |
| τ³-bench results | Coming soon | 18.9% | Coming soon |
| BrowseComp | Coming soon | 78% | Coming soon |

### Coding

- Winner: Not comparable
- A.X K2 public-lane score: Coming soon
- Nemotron 3.5 Super VL 120B A12B public-lane score: Coming soon

| Benchmark | A.X K2 | Nemotron 3.5 Super VL 120B A12B | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench v6 | 84.0% | 88.2% | Nemotron 3.5 Super VL 120B A12B |
| SciCode | 41% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 36.0% | Coming soon | Coming soon |
| SWE-bench Verified | Coming soon | 71.1% | Coming soon |
| SWE Multilingual | Coming soon | 67.7% | Coming soon |
| SWE-bench Pro | Coming soon | 51.8% | Coming soon |

### Reasoning

- Winner: Not comparable
- A.X K2 public-lane score: Coming soon
- Nemotron 3.5 Super VL 120B A12B public-lane score: 73 (Unranked · 2 rankable rows)

| Benchmark | A.X K2 | Nemotron 3.5 Super VL 120B A12B | Winner |
|-----------|-----------|-----------|--------|
| CritPt | Coming soon | 10.9% | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- A.X K2 public-lane score: Coming soon
- Nemotron 3.5 Super VL 120B A12B public-lane score: 62 (Unranked · 5 rankable rows)

| Benchmark | A.X K2 | Nemotron 3.5 Super VL 120B A12B | Winner |
|-----------|-----------|-----------|--------|
| BabyVision | Coming soon | 29.6% | Coming soon |
| MMLongBench-Doc | Coming soon | 62.8% | Coming soon |
| V* | Coming soon | 85.6% | Coming soon |
| MathVision | Coming soon | 78.2% | Coming soon |
| CharXiv | Coming soon | 80.8% | Coming soon |

### Knowledge

- Winner: Not comparable
- A.X K2 public-lane score: Coming soon
- Nemotron 3.5 Super VL 120B A12B public-lane score: 51.8 (Estimated · #73/184)

| Benchmark | A.X K2 | Nemotron 3.5 Super VL 120B A12B | Winner |
|-----------|-----------|-----------|--------|
| HLE | 27.8% | 29.2% | Nemotron 3.5 Super VL 120B A12B |
| GPQA-D | 85.6% | 89.5% | Nemotron 3.5 Super VL 120B A12B |
| HLE w/o tools | Coming soon | 31.8% | Coming soon |

### Instruction Following

- Winner: Not comparable
- A.X K2 public-lane score: Coming soon
- Nemotron 3.5 Super VL 120B A12B public-lane score: 66.6 (#72/146)

| Benchmark | A.X K2 | Nemotron 3.5 Super VL 120B A12B | Winner |
|-----------|-----------|-----------|--------|
| IFBench | 75.9% | 70.9% | A.X K2 |

### Mathematics

- Winner: Not comparable
- A.X K2 public-lane score: Coming soon
- Nemotron 3.5 Super VL 120B A12B public-lane score: Coming soon

| Benchmark | A.X K2 | Nemotron 3.5 Super VL 120B A12B | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | 97.1% | Coming soon | Coming soon |
| Apex | 45.8% | Coming soon | Coming soon |
| Apex Shortlist | 88.6% | 88.4% | A.X K2 |

## FAQ

### Which is better overall, A.X K2 or Nemotron 3.5 Super VL 120B A12B?

A.X K2 has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### How many benchmarks does A.X K2 cover on BenchLM?

A.X K2 currently has 10 sourced benchmark scores on BenchLM.

### How many benchmarks does Nemotron 3.5 Super VL 120B A12B cover on BenchLM?

Nemotron 3.5 Super VL 120B A12B currently has 19 sourced benchmark scores on BenchLM.

## Related Comparisons

- [A.X K2 vs A.X series](/compare/a-x-k2-vs-skt-ax)
- [Nemotron 3.5 Super VL 120B A12B vs A.X series](/compare/nemotron-3-5-super-vl-120b-a12b-vs-skt-ax)
- [A.X K2 vs Nemotron 3.5 Super VL 120B A12B NVFP4](/compare/a-x-k2-vs-nemotron-3-5-super-vl-120b-a12b-nvfp4)
- [Nemotron 3.5 Super VL 120B A12B vs Nemotron 3.5 Super VL 120B A12B NVFP4](/compare/nemotron-3-5-super-vl-120b-a12b-vs-nemotron-3-5-super-vl-120b-a12b-nvfp4)

## Explore More

- [A.X K2 profile](/models/a-x-k2)
- [Nemotron 3.5 Super VL 120B A12B profile](/models/nemotron-3-5-super-vl-120b-a12b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)