# Hy3 Preview vs Kimi K2.5 (Reasoning)

> Side-by-side benchmark comparison for Hy3 Preview and Kimi K2.5 (Reasoning) across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/hy3-preview-vs-kimi-k2-5-reasoning
- Last updated: September 23, 2026

- Shared sourced benchmarks: 4
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.6

## Quick Verdict

Pick Kimi K2.5 (Reasoning) if you want the stronger benchmark profile. Hy3 Preview only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Kimi K2.5 (Reasoning) leads overall 55 to 45.32.
- The biggest single benchmark swing is Gert Labs in Agentic, with scores of 36.91% and 32.58%.
- Hy3 Preview is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Hy3 Preview also has the larger context window at 256K.

## Model Snapshot

| Property | Hy3 Preview | Kimi K2.5 (Reasoning) |
|----------|----------|----------|
| Creator | Tencent | Moonshot AI |
| Type | Open Weight | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 256K | 128K |
| Overall Score | 45.32 | null |
| Benchmarks Covered | 6 | 9 |
| Pricing (input/output) | $0.00 / $0.00 | $0.60 / $3.00 |

## Category Breakdown

### Agentic

- Winner: Not comparable
- Hy3 Preview public-lane score: Coming soon
- Kimi K2.5 (Reasoning) public-lane score: Coming soon

| Benchmark | Hy3 Preview | Kimi K2.5 (Reasoning) | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 54.4% | 50.8% | Hy3 Preview |
| Gert Labs | 36.91% | 32.58% | Hy3 Preview |
| BrowseComp | Coming soon | 60.6% | Coming soon |

### Coding

- Winner: Not comparable
- Hy3 Preview public-lane score: 33.3 (Estimated · #85/135)
- Kimi K2.5 (Reasoning) public-lane score: Coming soon

| Benchmark | Hy3 Preview | Kimi K2.5 (Reasoning) | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 74.4% | 76.8% | Kimi K2.5 (Reasoning) |
| Terminal-Bench 2.0 | 54.4% | Coming soon | Coming soon |
| Vibe Code Bench | Coming soon | 17.54% | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- Hy3 Preview public-lane score: Coming soon
- Kimi K2.5 (Reasoning) public-lane score: 63.3 (Unranked · 1 rankable row)

| Benchmark | Hy3 Preview | Kimi K2.5 (Reasoning) | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | Coming soon | 78.5% | Coming soon |

### Knowledge

- Winner: Not comparable
- Hy3 Preview public-lane score: 39.1 (Estimated · #93/160)
- Kimi K2.5 (Reasoning) public-lane score: Coming soon

| Benchmark | Hy3 Preview | Kimi K2.5 (Reasoning) | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 87.2% | 87.6% | Kimi K2.5 (Reasoning) |
| GPQA-D | 87.2% | Coming soon | Coming soon |
| MMLU-Pro | Coming soon | 87.1% | Coming soon |

### Instruction Following

- Winner: Not comparable
- Hy3 Preview public-lane score: 46.9 (#86/124)
- Kimi K2.5 (Reasoning) public-lane score: Coming soon

### Mathematics

- Winner: Not comparable
- Hy3 Preview public-lane score: Coming soon
- Kimi K2.5 (Reasoning) public-lane score: Coming soon

| Benchmark | Hy3 Preview | Kimi K2.5 (Reasoning) | Winner |
|-----------|-----------|-----------|--------|
| AIME 2025 | Coming soon | 96.1% | Coming soon |

## FAQ

### Which is better overall, Hy3 Preview or Kimi K2.5 (Reasoning)?

Kimi K2.5 (Reasoning) is ahead overall on BenchLM right now.

### How many benchmarks does Hy3 Preview cover on BenchLM?

Hy3 Preview currently has 6 sourced benchmark scores on BenchLM.

### How many benchmarks does Kimi K2.5 (Reasoning) cover on BenchLM?

Kimi K2.5 (Reasoning) currently has 9 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Hy3 Preview vs Hy3](/compare/hy3-vs-hy3-preview)
- [Kimi K2.5 (Reasoning) vs Hy3](/compare/hy3-vs-kimi-k2-5-reasoning)
- [Hy3 Preview vs Kimi K2.5](/compare/hy3-preview-vs-kimi-k2-5)
- [Kimi K2.5 (Reasoning) vs Kimi K2.5](/compare/kimi-k2-5-vs-kimi-k2-5-reasoning)

## Explore More

- [Hy3 Preview profile](/models/hy3-preview)
- [Kimi K2.5 (Reasoning) profile](/models/kimi-k2-5-reasoning)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)