# A.X K2 vs Claude Opus 4.6

> Side-by-side benchmark comparison for A.X K2 and Claude Opus 4.6 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/a-x-k2-vs-claude-opus-4-6
- Last updated: September 10, 2026

- Shared sourced benchmarks: 2
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Evidence is too thin for a benchmark verdict: A.X K2 and Claude Opus 4.6 share only 2 sourced benchmark rows.

## Summary

- Only 2 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 lower published output-token price.
- Claude Opus 4.6 has the larger published context window at 1M.

## Model Snapshot

| Property | A.X K2 | Claude Opus 4.6 |
|----------|----------|----------|
| Creator | SK Telecom | Anthropic |
| Type | Open Weight | Proprietary |
| Reasoning | Reasoning | Non-Reasoning |
| Context | 262K | 1M |
| Independent public score (not head-to-head) | null | 69 |
| Benchmarks Covered | 10 | 33 |
| Pricing (input/output) | $0.00 / $0.00 | $5.00 / $25.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- A.X K2 public-lane score: Coming soon
- Claude Opus 4.6 public-lane score: 50.1 (Supported · #56/152)

| Benchmark | A.X K2 | Claude Opus 4.6 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 36.0% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 65.4% | Coming soon |
| BrowseComp | Coming soon | 83.7% | Coming soon |
| OSWorld-Verified | Coming soon | 72.7% | Coming soon |
| Claw-Eval | Coming soon | 70.4% | Coming soon |
| DeepSearchQA | Coming soon | 73.7% | Coming soon |
| CyberGym | Coming soon | 66.6% | Coming soon |
| Gert Labs | Coming soon | 61.85% | Coming soon |
| ResearchClawBench | Coming soon | 19.9% | Coming soon |
| JobBench | Coming soon | 36.7% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- A.X K2 public-lane score: Coming soon
- Claude Opus 4.6 public-lane score: 56.6 (Supported · #37/151)

| Benchmark | A.X K2 | Claude Opus 4.6 | 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 |
| SWE-bench Verified | Coming soon | 80.8% | Coming soon |
| SWE-bench Verified* | Coming soon | 75.6% | Coming soon |
| LiveCodeBench Pro | Coming soon | 70.7% | Coming soon |
| SWE-bench Pro | Coming soon | 53.4% | Coming soon |
| SWE-Rebench | Coming soon | 65.3% | Coming soon |
| React Native Evals | Coming soon | 84.1% | Coming soon |
| Vibe Code Bench | Coming soon | 57.57% | Coming soon |
| FrontierCode 1.1 Main | Coming soon | 26.9% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- A.X K2 public-lane score: Coming soon
- Claude Opus 4.6 public-lane score: 59.5 (#28/48)

| Benchmark | A.X K2 | Claude Opus 4.6 | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | Coming soon | 77.3% | Coming soon |
| ERQA | Coming soon | 51.6% | Coming soon |
| ScreenSpot Pro | Coming soon | 83.1% | Coming soon |
| MedXpertQA (MM) | Coming soon | 64.8% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- A.X K2 public-lane score: Coming soon
- Claude Opus 4.6 public-lane score: 67.1 (Unranked · 2 rankable rows)

### Knowledge

- Winner: Insufficient shared evidence
- A.X K2 public-lane score: Coming soon
- Claude Opus 4.6 public-lane score: 61 (Estimated · #34/183)

| Benchmark | A.X K2 | Claude Opus 4.6 | Winner |
|-----------|-----------|-----------|--------|
| HLE | 27.8% | 53% | Claude Opus 4.6 |
| GPQA-D | 85.6% | 89.2% | Claude Opus 4.6 |
| GPQA | Coming soon | 91.3% | Coming soon |
| SuperGPQA | Coming soon | 95% | Coming soon |
| MMLU-Pro | Coming soon | 82% | Coming soon |
| MMLU-Pro (Arcee) | Coming soon | 89.1% | Coming soon |
| HLE w/o tools | Coming soon | 40% | Coming soon |
| HealthBench Hard | Coming soon | 14.8% | Coming soon |
| MedXpertQA (Text) | Coming soon | 52.1% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- A.X K2 public-lane score: Coming soon
- Claude Opus 4.6 public-lane score: 52.6 (#78/123)

| Benchmark | A.X K2 | Claude Opus 4.6 | Winner |
|-----------|-----------|-----------|--------|
| IFBench | 75.9% | Coming soon | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- A.X K2 public-lane score: Coming soon
- Claude Opus 4.6 public-lane score: 58.6 (Unranked · 3 rankable rows)

| Benchmark | A.X K2 | Claude Opus 4.6 | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | 97.1% | Coming soon | Coming soon |
| Apex | 45.8% | Coming soon | Coming soon |
| Apex Shortlist | 88.6% | Coming soon | Coming soon |
| AIME25 (Arcee) | Coming soon | 99.8% | Coming soon |
| FrontierMath v2 (Tiers 1-3) | Coming soon | 40.700% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 22.900% | Coming soon |

## FAQ

### Is there enough evidence to pick between A.X K2 and Claude Opus 4.6?

Not yet. The models share only 2 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)
- [Claude Opus 4.6 vs A.X series](/compare/claude-opus-4-6-vs-skt-ax)
- [A.X K2 vs Claude Opus 4.6 (Adaptive)](/compare/a-x-k2-vs-claude-opus-4-6-thinking)
- [Claude Opus 4.6 vs Claude Opus 4.6 (Adaptive)](/compare/claude-opus-4-6-vs-claude-opus-4-6-thinking)

## Explore More

- [A.X K2 profile](/models/a-x-k2)
- [Claude Opus 4.6 profile](/models/claude-opus-4-6)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)