# A.X K2 vs Solar Pro 3

> Side-by-side benchmark comparison for A.X K2 and Solar Pro 3 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/a-x-k2-vs-solar-pro-3
- Last updated: September 10, 2026

- Shared sourced benchmarks: 1
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Evidence is too thin for a benchmark verdict: A.X K2 and Solar Pro 3 share only 1 sourced benchmark row.

## Summary

- Only 1 shared sourced benchmark row is available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- A.X K2 has the lower published output-token price.
- A.X K2 has the larger published context window at 262K.

## Model Snapshot

| Property | A.X K2 | Solar Pro 3 |
|----------|----------|----------|
| Creator | SK Telecom | Upstage |
| Type | Open Weight | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 262K | 128K |
| Independent public score (not head-to-head) | null | null |
| Benchmarks Covered | 10 | 1 |
| Pricing (input/output) | $0.00 / $0.00 | $0.15 / $0.60 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- A.X K2 public-lane score: Coming soon
- Solar Pro 3 public-lane score: Coming soon

| Benchmark | A.X K2 | Solar Pro 3 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 36.0% | Coming soon | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- A.X K2 public-lane score: Coming soon
- Solar Pro 3 public-lane score: Coming soon

| Benchmark | A.X K2 | Solar Pro 3 | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench v6 | 84.0% | Coming soon | Coming soon |
| SciCode | 41% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 36.0% | Coming soon | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- A.X K2 public-lane score: Coming soon
- Solar Pro 3 public-lane score: 43.2 (Unranked · 2 rankable rows)

### Knowledge

- Winner: Insufficient shared evidence
- A.X K2 public-lane score: Coming soon
- Solar Pro 3 public-lane score: Coming soon

| Benchmark | A.X K2 | Solar Pro 3 | Winner |
|-----------|-----------|-----------|--------|
| HLE | 27.8% | Coming soon | Coming soon |
| GPQA-D | 85.6% | Coming soon | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- A.X K2 public-lane score: Coming soon
- Solar Pro 3 public-lane score: 87.1 (#35/123)

| Benchmark | A.X K2 | Solar Pro 3 | Winner |
|-----------|-----------|-----------|--------|
| IFBench | 75.9% | 55.8% | A.X K2 |

### Mathematics

- Winner: Insufficient shared evidence
- A.X K2 public-lane score: Coming soon
- Solar Pro 3 public-lane score: Coming soon

| Benchmark | A.X K2 | Solar Pro 3 | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | 97.1% | Coming soon | Coming soon |
| 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 Solar Pro 3?

Not yet. The models share only 1 sourced benchmark row, 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)
- [Solar Pro 3 vs A.X series](/compare/skt-ax-vs-solar-pro-3)
- [A.X K2 vs Solar Pro 2](/compare/a-x-k2-vs-solar-pro-2)
- [Solar Pro 3 vs Solar Pro 2](/compare/solar-pro-2-vs-solar-pro-3)

## Explore More

- [A.X K2 profile](/models/a-x-k2)
- [Solar Pro 3 profile](/models/solar-pro-3)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)