# A.X K2 vs GLM-5.3-Flash

> Side-by-side benchmark comparison for A.X K2 and GLM-5.3-Flash across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/a-x-k2-vs-glm-5-3-flash
- 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 GLM-5.3-Flash 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.
- GLM-5.3-Flash has the larger published context window at 1M.

## Model Snapshot

| Property | A.X K2 | GLM-5.3-Flash |
|----------|----------|----------|
| Creator | SK Telecom | Z.AI |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 262K | 1M |
| Independent public score (not head-to-head) | null | 65.99 |
| Benchmarks Covered | 10 | 19 |
| Pricing (input/output) | $0.00 / $0.00 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- A.X K2 public-lane score: Coming soon
- GLM-5.3-Flash public-lane score: 60.1 (Supported · #21/152)

| Benchmark | A.X K2 | GLM-5.3-Flash | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 36.0% | 84.3% | GLM-5.3-Flash |
| Toolathlon-Verified | Coming soon | 78.4% | Coming soon |
| AutomationBench | Coming soon | 48.8% | Coming soon |
| Agents' Last Exam | Coming soon | 26.3% | Coming soon |
| HLE w/ tools | Coming soon | 55.3% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 62.9% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- A.X K2 public-lane score: Coming soon
- GLM-5.3-Flash public-lane score: 58.1 (Supported · #28/151)

| Benchmark | A.X K2 | GLM-5.3-Flash | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench v6 | 84.0% | Coming soon | Coming soon |
| SciCode | 41% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 36.0% | 84.3% | GLM-5.3-Flash |
| DeepSWE | Coming soon | 63.4% | Coming soon |
| NL2Repo | Coming soon | 56.3% | Coming soon |
| LiveCodeBench (Vals) | Coming soon | 80.5% | Coming soon |
| SWE-bench (Vals) | Coming soon | 92.0% | Coming soon |
| OpenHarmony Bench | Coming soon | 57.3% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- A.X K2 public-lane score: Coming soon
- GLM-5.3-Flash public-lane score: 80.5 (#10/48)

| Benchmark | A.X K2 | GLM-5.3-Flash | Winner |
|-----------|-----------|-----------|--------|
| OfficeQA Pro | Coming soon | 62.4% | Coming soon |
| CharXiv | Coming soon | 89.4% | Coming soon |
| Chartography (tools) | Coming soon | 78.0% | Coming soon |
| BabyVision | Coming soon | 53.4% | Coming soon |
| MMVU | Coming soon | 80.5% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- A.X K2 public-lane score: Coming soon
- GLM-5.3-Flash public-lane score: 66 (Supported · #22/183)

| Benchmark | A.X K2 | GLM-5.3-Flash | Winner |
|-----------|-----------|-----------|--------|
| HLE | 27.8% | Coming soon | Coming soon |
| GPQA-D | 85.6% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | Coming soon | 86.4% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 86.1% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- A.X K2 public-lane score: Coming soon
- GLM-5.3-Flash public-lane score: Coming soon

| Benchmark | A.X K2 | GLM-5.3-Flash | Winner |
|-----------|-----------|-----------|--------|
| IFBench | 75.9% | Coming soon | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- A.X K2 public-lane score: Coming soon
- GLM-5.3-Flash public-lane score: Coming soon

| Benchmark | A.X K2 | GLM-5.3-Flash | 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 GLM-5.3-Flash?

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)
- [GLM-5.3-Flash vs A.X series](/compare/glm-5-3-flash-vs-skt-ax)
- [A.X K2 vs GLM-5.3](/compare/a-x-k2-vs-glm-5-3)
- [GLM-5.3-Flash vs GLM-5.3](/compare/glm-5-3-vs-glm-5-3-flash)

## Explore More

- [A.X K2 profile](/models/a-x-k2)
- [GLM-5.3-Flash profile](/models/glm-5-3-flash)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)