# Hy4 preview vs Kimi K2.6

> Side-by-side benchmark comparison for Hy4 preview and Kimi K2.6 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/hy4-preview-vs-kimi-2-6
- Last updated: October 13, 2026

- Shared sourced benchmarks: 8
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Hy4 preview leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- Hy4 preview has the higher overall point estimate 60.86 to 58.46. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in multimodal & grounded, where the averages are 88.3 for Hy4 preview and 73.8 for Kimi K2.6.
- The biggest single benchmark swing is MCP Atlas in Agentic, with scores of 83.7% and 55.9%.
- Hy4 preview is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Hy4 preview also has the larger context window at 1M.

## Model Snapshot

| Property | Hy4 preview | Kimi K2.6 |
|----------|----------|----------|
| Creator | Tencent | Moonshot AI |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 256K |
| Overall Score | 60.86 | 58.46 |
| Benchmarks Covered | 30 | 37 |
| Pricing (input/output) | $0.00 / $0.00 | $0.95 / $4.00 |

## Category Breakdown

### Agentic

- Winner: Directional only
- Hy4 preview public-lane score: 54.5 (Estimated · #37/123)
- Kimi K2.6 public-lane score: 43.8 (Supported · #57/123)

| Benchmark | Hy4 preview | Kimi K2.6 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 85.4% | Coming soon | Coming soon |
| CyberGym | 78.4% | Coming soon | Coming soon |
| WideResearch | 83.9% | 80.8% | Hy4 preview |
| DRACO | 77.2% | Coming soon | Coming soon |
| MCP Atlas | 83.7% | 55.9% | Hy4 preview |
| Toolathlon-Verified | 74.1% | Coming soon | Coming soon |
| APEX-Agents | 37.1% | Coming soon | Coming soon |
| skillsBench | 62.9% | Coming soon | Coming soon |
| JobBench | 61.7% | Coming soon | Coming soon |
| Agents' Last Exam | 22.8% | Coming soon | Coming soon |
| AutomationBench | 32.1% | Coming soon | Coming soon |
| BankerToolBench | 78.6% | Coming soon | Coming soon |
| HLE w/ tools | 55.4% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 55.1% | 53.6% | Hy4 preview |
| CWE-bench v1 | 53.0% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 66.7% | Coming soon |
| BrowseComp | Coming soon | 83.2% | Coming soon |
| OSWorld-Verified | Coming soon | 73.1% | Coming soon |
| Toolathlon | Coming soon | 50% | Coming soon |
| Claw-Eval | Coming soon | 62.3% | Coming soon |
| DeepSearchQA | Coming soon | 92.5% | Coming soon |
| Gert Labs | Coming soon | 56.82% | Coming soon |
| ResearchClawBench | Coming soon | 18.0% | Coming soon |
| OSWorld 2.0 | Coming soon | 4.6% | Coming soon |

### Coding

- Winner: Hy4 preview
- Hy4 preview public-lane score: 57.1 (Supported · #26/148)
- Kimi K2.6 public-lane score: 43.7 (Supported · #55/148)

| Benchmark | Hy4 preview | Kimi K2.6 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 85.4% | Coming soon | Coming soon |
| SWE-bench Pro | 65.7% | 58.6% | Hy4 preview |
| SWE Multilingual | 82.9% | 76.7% | Hy4 preview |
| DeepSWE | 64.3% | Coming soon | Coming soon |
| NL2Repo | 58.9% | Coming soon | Coming soon |
| ProgramBench | 17.5% | Coming soon | Coming soon |
| PostTrain Bench | 35.6% | Coming soon | Coming soon |
| sweMarathon | 31.9% | Coming soon | Coming soon |
| SWE-bench Verified | Coming soon | 80.2% | Coming soon |
| LiveCodeBench v6 | Coming soon | 89.6% | Coming soon |
| SciCode | Coming soon | 52.2% | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 66.7% | Coming soon |
| Vibe Code Bench | Coming soon | 37.89% | Coming soon |
| cursorBench31 | Coming soon | 47.6% | Coming soon |
| LiveCodeBench (Vals) | Coming soon | 86.8% | Coming soon |
| SWE-bench (Vals) | Coming soon | 76.2% | Coming soon |

### Reasoning

- Winner: Not comparable
- Hy4 preview public-lane score: Coming soon
- Kimi K2.6 public-lane score: Coming soon

| Benchmark | Hy4 preview | Kimi K2.6 | Winner |
|-----------|-----------|-----------|--------|
| CritPt | 16.9% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- Hy4 preview public-lane score: 88.3 (Unranked · 1 rankable row)
- Kimi K2.6 public-lane score: 73.8 (#27/54)

| Benchmark | Hy4 preview | Kimi K2.6 | Winner |
|-----------|-----------|-----------|--------|
| OfficeQA Pro | 66.2% | Coming soon | Coming soon |
| MMMU-Pro | Coming soon | 79.4% | Coming soon |
| MMMU-Pro w/ Python | Coming soon | 80.1% | Coming soon |
| CharXiv | Coming soon | 80.4% | Coming soon |
| MathVision | Coming soon | 87.4% | Coming soon |
| V* | Coming soon | 96.9% | Coming soon |

### Knowledge

- Winner: Directional only
- Hy4 preview public-lane score: 63.6 (Estimated · #39/180)
- Kimi K2.6 public-lane score: 59.7 (Supported · #48/180)

| Benchmark | Hy4 preview | Kimi K2.6 | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 92.3% | 90.5% | Hy4 preview |
| GPQA-D | 92.3% | 90.5% | Hy4 preview |
| HLE | 55.4% | 34.7% | Hy4 preview |
| HLE w/o tools | 43.4% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | Coming soon | 89.1% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 87.6% | Coming soon |

### Mathematics

- Winner: Not comparable
- Hy4 preview public-lane score: Coming soon
- Kimi K2.6 public-lane score: 76.8 (#4/12)

| Benchmark | Hy4 preview | Kimi K2.6 | Winner |
|-----------|-----------|-----------|--------|
| Apex | 74.2% | Coming soon | Coming soon |
| AIME26 | Coming soon | 96.4% | Coming soon |
| HMMT Feb 2026 | Coming soon | 92.7% | Coming soon |
| MMAnswerBench | Coming soon | 86.0% | Coming soon |
| FrontierMath v2 (Tiers 1-3) | Coming soon | 57.193% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 25.641% | Coming soon |

## FAQ

### Which is better overall, Hy4 preview or Kimi K2.6?

Hy4 preview has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### Where is the biggest gap between Hy4 preview and Kimi K2.6?

The widest category gap is in multimodal & grounded, where the averages are 88.3 for Hy4 preview and 73.8 for Kimi K2.6.

### How many benchmarks does Hy4 preview cover on BenchLM?

Hy4 preview currently has 30 sourced benchmark scores on BenchLM.

### How many benchmarks does Kimi K2.6 cover on BenchLM?

Kimi K2.6 currently has 37 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Hy4 preview vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-hy4-preview)
- [Kimi K2.6 vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-kimi-2-6)
- [Hy4 preview vs GPT-6.1 Sol](/compare/gpt-6-1-sol-vs-hy4-preview)
- [Kimi K2.6 vs GPT-6.1 Sol](/compare/gpt-6-1-sol-vs-kimi-2-6)

## Explore More

- [Hy4 preview profile](/models/hy4-preview)
- [Kimi K2.6 profile](/models/kimi-2-6)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)