# A.X K2 vs Inkling-Small

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

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

- Shared sourced benchmarks: 5
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Pick Inkling-Small 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-Small leads overall 59.25 to 49.
- The biggest single benchmark swing is HLE in Knowledge, with scores of 27.8% and 47.8%.
- A.X K2 is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Inkling-Small also has the larger context window at 1M.

## Model Snapshot

| Property | A.X K2 | Inkling-Small |
|----------|----------|----------|
| Creator | SK Telecom | Thinking Machines Lab |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Hybrid |
| Context | 262K | 1M |
| Overall Score | null | 59.25 |
| Benchmarks Covered | 10 | 25 |
| Pricing (input/output) | $0.00 / $0.00 | $0.58 / $1.44 |

## Category Breakdown

### Agentic

- Winner: Coming soon
- A.X K2 public-lane score: Coming soon
- Inkling-Small public-lane score: 36.9 (Supported · #128/152)

| Benchmark | A.X K2 | Inkling-Small | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 36.0% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 64.7% | Coming soon |
| BrowseComp | Coming soon | 77.4% | Coming soon |
| MCP Atlas | Coming soon | 79.6% | Coming soon |
| Toolathlon-Verified | Coming soon | 54.4% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 55.1% | Coming soon |

### Coding

- Winner: Coming soon
- A.X K2 public-lane score: Coming soon
- Inkling-Small public-lane score: 43.8 (Supported · #97/151)

| Benchmark | A.X K2 | Inkling-Small | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench v6 | 84.0% | Coming soon | Coming soon |
| SciCode | 41% | 48.7% | Inkling-Small |
| Terminal-Bench 2.1 | 36.0% | Coming soon | Coming soon |
| SWE-bench Verified | Coming soon | 80.2% | Coming soon |
| SWE-bench Pro | Coming soon | 55.9% | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 64.7% | Coming soon |
| LiveCodeBench (Vals) | Coming soon | 85.9% | Coming soon |
| SWE-bench (Vals) | Coming soon | 82.2% | Coming soon |

### Multimodal & Grounded

- Winner: Coming soon
- A.X K2 public-lane score: Coming soon
- Inkling-Small public-lane score: 48.8 (#39/48)

| Benchmark | A.X K2 | Inkling-Small | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | Coming soon | 74% | Coming soon |
| CharXiv | Coming soon | 81.3% | Coming soon |
| CharXiv w/o tools | Coming soon | 77.4% | Coming soon |

### Reasoning

- Winner: Coming soon
- A.X K2 public-lane score: Coming soon
- Inkling-Small public-lane score: 42.7 (Unranked · 3 rankable rows)

| Benchmark | A.X K2 | Inkling-Small | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | Coming soon | 40.1% | Coming soon |
| CritPt | Coming soon | 8.3% | Coming soon |

### Knowledge

- Winner: Coming soon
- A.X K2 public-lane score: Coming soon
- Inkling-Small public-lane score: 56.5 (Supported · #46/183)

| Benchmark | A.X K2 | Inkling-Small | Winner |
|-----------|-----------|-----------|--------|
| HLE | 27.8% | 47.8% | Inkling-Small |
| GPQA-D | 85.6% | 89.5% | Inkling-Small |
| GPQA | Coming soon | 89.5% | Coming soon |
| HLE w/o tools | Coming soon | 31.6% | Coming soon |
| GPQA Diamond (Vals) | Coming soon | 83.6% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 85.6% | Coming soon |

### Instruction Following

- Winner: Coming soon
- A.X K2 public-lane score: Coming soon
- Inkling-Small public-lane score: 89.6 (#25/123)

| Benchmark | A.X K2 | Inkling-Small | Winner |
|-----------|-----------|-----------|--------|
| IFBench | 75.9% | 82.2% | Inkling-Small |

### Mathematics

- Winner: Coming soon
- A.X K2 public-lane score: Coming soon
- Inkling-Small public-lane score: 76.9 (Unranked · 2 rankable rows)

| Benchmark | A.X K2 | Inkling-Small | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | 97.1% | 95.5% | A.X K2 |
| Apex | 45.8% | Coming soon | Coming soon |
| Apex Shortlist | 88.6% | Coming soon | Coming soon |
| HMMT Feb 2026 | Coming soon | 90.2% | Coming soon |

## FAQ

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

Inkling-Small 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-Small cover on BenchLM?

Inkling-Small currently has 25 sourced benchmark scores on BenchLM.

## Related Comparisons

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

## Explore More

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