# A.X K2 vs Inkling

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

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

- Shared sourced benchmarks: 4
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Pick Inkling if you want the stronger benchmark profile. A.X K2 only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Inkling leads overall 60.28 to 49.
- The biggest single benchmark swing is HLE in Knowledge, with scores of 27.8% and 46%.
- A.X K2 is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Inkling also has the larger context window at 1M.

## Model Snapshot

| Property | A.X K2 | Inkling |
|----------|----------|----------|
| Creator | SK Telecom | Thinking Machines Lab |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Hybrid |
| Context | 262K | 1M |
| Overall Score | null | 60.28 |
| Benchmarks Covered | 10 | 21 |
| Pricing (input/output) | $0.00 / $0.00 | $1.87 / $4.68 |

## Category Breakdown

### Agentic

- Winner: Coming soon
- A.X K2 public-lane score: Coming soon
- Inkling public-lane score: 38.3 (Supported · #122/152)

| Benchmark | A.X K2 | Inkling | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 36.0% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 63.8% | Coming soon |
| BrowseComp | Coming soon | 77.1% | Coming soon |
| MCP Atlas | Coming soon | 74.1% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 47.6% | Coming soon |

### Coding

- Winner: Coming soon
- A.X K2 public-lane score: Coming soon
- Inkling public-lane score: 41.1 (Supported · #111/151)

| Benchmark | A.X K2 | Inkling | 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 | 77.6% | Coming soon |
| SWE-bench Pro | Coming soon | 54.3% | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 63.8% | Coming soon |
| FrontierSWE v2 | Coming soon | 4.1% | Coming soon |
| LiveCodeBench (Vals) | Coming soon | 85.5% | Coming soon |
| SWE-bench (Vals) | Coming soon | 77.6% | Coming soon |

### Multimodal & Grounded

- Winner: Coming soon
- A.X K2 public-lane score: Coming soon
- Inkling public-lane score: 49.2 (#38/48)

| Benchmark | A.X K2 | Inkling | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | Coming soon | 73.5% | Coming soon |
| CharXiv | Coming soon | 82% | Coming soon |
| CharXiv w/o tools | Coming soon | 78.1% | Coming soon |

### Reasoning

- Winner: Coming soon
- A.X K2 public-lane score: Coming soon
- Inkling public-lane score: 74.1 (Unranked · 2 rankable rows)

### Knowledge

- Winner: Coming soon
- A.X K2 public-lane score: Coming soon
- Inkling public-lane score: 57.4 (Supported · #43/183)

| Benchmark | A.X K2 | Inkling | Winner |
|-----------|-----------|-----------|--------|
| HLE | 27.8% | 46% | Inkling |
| GPQA-D | 85.6% | 87.9% | Inkling |
| GPQA | Coming soon | 87.9% | Coming soon |
| HLE w/o tools | Coming soon | 30% | Coming soon |
| GPQA Diamond (Vals) | Coming soon | 87.1% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 86.3% | Coming soon |

### Instruction Following

- Winner: Coming soon
- A.X K2 public-lane score: Coming soon
- Inkling public-lane score: 85.2 (#44/123)

| Benchmark | A.X K2 | Inkling | Winner |
|-----------|-----------|-----------|--------|
| IFBench | 75.9% | 79.8% | Inkling |

### Mathematics

- Winner: Coming soon
- A.X K2 public-lane score: Coming soon
- Inkling public-lane score: 78.9 (Unranked · 1 rankable row)

| Benchmark | A.X K2 | Inkling | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | 97.1% | 97.1% | Tie |
| Apex | 45.8% | Coming soon | Coming soon |
| Apex Shortlist | 88.6% | Coming soon | Coming soon |

## FAQ

### Which is better overall, A.X K2 or Inkling?

Inkling is ahead overall on BenchLM right now.

### 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 Inkling cover on BenchLM?

Inkling currently has 21 sourced benchmark scores on BenchLM.

## Related Comparisons

- [A.X K2 vs A.X series](/compare/a-x-k2-vs-skt-ax)
- [Inkling vs A.X series](/compare/inkling-vs-skt-ax)
- [A.X K2 vs Inkling-Small](/compare/a-x-k2-vs-inkling-small)
- [Inkling vs Inkling-Small](/compare/inkling-vs-inkling-small)

## Explore More

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