# A.X K2 vs Ternary Bonsai 2 27B

> Side-by-side benchmark comparison for A.X K2 and Ternary Bonsai 2 27B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/a-x-k2-vs-ternary-bonsai-2-27b
- Last updated: September 18, 2026

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

## Quick Verdict

Pick Ternary Bonsai 2 27B 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

- Ternary Bonsai 2 27B leads overall 50.78 to 50.
- The biggest single benchmark swing is Terminal-Bench 2.1 in Agentic, with scores of 36.0% and 52.8%.

## Model Snapshot

| Property | A.X K2 | Ternary Bonsai 2 27B |
|----------|----------|----------|
| Creator | SK Telecom | Prism ML |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 262K | 262K |
| Overall Score | null | 50.78 |
| Benchmarks Covered | 10 | 21 |
| Pricing (input/output) | $0.00 / $0.00 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Coming soon
- A.X K2 public-lane score: Coming soon
- Ternary Bonsai 2 27B public-lane score: 49.9 (Estimated · #59/154)

| Benchmark | A.X K2 | Ternary Bonsai 2 27B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 36.0% | 52.8% | Ternary Bonsai 2 27B |
| τ²-bench results | Coming soon | 80.2% | Coming soon |
| BFCL v3 | Coming soon | 74.9% | Coming soon |

### Coding

- Winner: Coming soon
- A.X K2 public-lane score: Coming soon
- Ternary Bonsai 2 27B public-lane score: 49.9 (Estimated · #64/154)

| Benchmark | A.X K2 | Ternary Bonsai 2 27B | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench v6 | 84.0% | 90.1% | Ternary Bonsai 2 27B |
| SciCode | 41% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 36.0% | 52.8% | Ternary Bonsai 2 27B |
| BigCodeBench | Coming soon | 58.1% | Coming soon |
| SWE-bench Verified | Coming soon | 60.8% | Coming soon |

### Multimodal & Grounded

- Winner: Coming soon
- A.X K2 public-lane score: Coming soon
- Ternary Bonsai 2 27B public-lane score: Coming soon

| Benchmark | A.X K2 | Ternary Bonsai 2 27B | Winner |
|-----------|-----------|-----------|--------|
| CharXiv (overall) | Coming soon | 80.0% | Coming soon |
| A-OKVQA | Coming soon | 86.8% | Coming soon |
| OmniDocBench 1.6 | Coming soon | 89.1% | Coming soon |
| RealWorldQA | Coming soon | 80.1% | Coming soon |
| OCRBench V2 | Coming soon | 56.9% | Coming soon |

### Reasoning

- Winner: Coming soon
- A.X K2 public-lane score: Coming soon
- Ternary Bonsai 2 27B public-lane score: 73.9 (Unranked · 1 rankable row)

### Knowledge

- Winner: Coming soon
- A.X K2 public-lane score: Coming soon
- Ternary Bonsai 2 27B public-lane score: 50.6 (Estimated · #78/184)

| Benchmark | A.X K2 | Ternary Bonsai 2 27B | Winner |
|-----------|-----------|-----------|--------|
| HLE | 27.8% | Coming soon | Coming soon |
| GPQA-D | 85.6% | 85.8% | Ternary Bonsai 2 27B |
| MMLU-Redux | Coming soon | 89.1% | Coming soon |
| GPQA | Coming soon | 85.8% | Coming soon |

### Instruction Following

- Winner: Coming soon
- A.X K2 public-lane score: Coming soon
- Ternary Bonsai 2 27B public-lane score: 71 (#64/124)

| Benchmark | A.X K2 | Ternary Bonsai 2 27B | Winner |
|-----------|-----------|-----------|--------|
| IFBench | 75.9% | 74% | A.X K2 |
| IFEval | Coming soon | 91.3% | Coming soon |

### Mathematics

- Winner: Coming soon
- A.X K2 public-lane score: Coming soon
- Ternary Bonsai 2 27B public-lane score: 76.8 (Unranked · 4 rankable rows)

| Benchmark | A.X K2 | Ternary Bonsai 2 27B | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | 97.1% | 95.8% | A.X K2 |
| Apex | 45.8% | Coming soon | Coming soon |
| Apex Shortlist | 88.6% | Coming soon | Coming soon |
| GSM8K | Coming soon | 96.7% | Coming soon |
| MATH-500 | Coming soon | 98.8% | Coming soon |
| AIME 2025 | Coming soon | 95% | Coming soon |

## FAQ

### Which is better overall, A.X K2 or Ternary Bonsai 2 27B?

Ternary Bonsai 2 27B 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 Ternary Bonsai 2 27B cover on BenchLM?

Ternary Bonsai 2 27B currently has 21 sourced benchmark scores on BenchLM.

## Related Comparisons

- [A.X K2 vs A.X series](/compare/a-x-k2-vs-skt-ax)
- [Ternary Bonsai 2 27B vs A.X series](/compare/skt-ax-vs-ternary-bonsai-2-27b)
- [A.X K2 vs Claude Fable 5.1](/compare/a-x-k2-vs-claude-fable-5-1)
- [Ternary Bonsai 2 27B vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-ternary-bonsai-2-27b)

## Explore More

- [A.X K2 profile](/models/a-x-k2)
- [Ternary Bonsai 2 27B profile](/models/ternary-bonsai-2-27b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)