# Hy4 vs Kimi K3.1 Pro

> Side-by-side benchmark comparison for Hy4 and Kimi K3.1 Pro across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/hy4-vs-kimi-3-1-pro
- Last updated: November 4, 2026

- Shared sourced benchmarks: 12
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Kimi K3.1 Pro leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- Kimi K3.1 Pro has the higher overall point estimate 74.61 to 0. Conditional score ranges do not establish rank confidence.
- The biggest single benchmark swing is Terminal-Bench 4.0 in Agentic, with scores of 44.40% and 65.70%.
- Hy4 is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Kimi K3.1 Pro also has the larger context window at 1.05M.

## Model Snapshot

| Property | Hy4 | Kimi K3.1 Pro |
|----------|----------|----------|
| Creator | Tencent | Moonshot AI |
| Type | Pending | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 1.05M |
| Overall Score | null | 74.61 |
| Benchmarks Covered | 15 | 45 |
| Pricing (input/output) | $0.834 / $2.501 | $2.00 / $10.00 |

## Category Breakdown

### Agentic

- Winner: Not comparable
- Hy4 public-lane score: Coming soon
- Kimi K3.1 Pro public-lane score: 73.2 (Supported · #9/135)

| Benchmark | Hy4 | Kimi K3.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 4.0 | 44.40% | 65.70% | Kimi K3.1 Pro |
| Terminal-Bench-Science 0.1 | 19.8% | 38.1% | Kimi K3.1 Pro |
| HLE w/ tools | 59.1% | 70.0% | Kimi K3.1 Pro |
| Agents' Last Exam | 41.0% | 43.2% | Kimi K3.1 Pro |
| APEX-Agents | 75.2% | 69.4% | Hy4 |
| AutomationBench | 56.2% | Coming soon | Coming soon |
| OSWorld 2.1 | 78.9% | 79.6% | Kimi K3.1 Pro |
| BrowseComp | Coming soon | 92.1% | Coming soon |
| BioMysteryBench | Coming soon | 80.6% | Coming soon |
| Agents' Last Exam (CLI) | Coming soon | 44.2% | Coming soon |
| Frontier Finance | Coming soon | 58.6% | Coming soon |
| HANDBOOK.md | Coming soon | 44.6% | Coming soon |
| OSWorld 2.0 | Coming soon | 79.6% | Coming soon |
| Business Operation | Coming soon | 37.8% | Coming soon |
| Financial Modeling | Coming soon | 57.6% | Coming soon |
| Financial Research | Coming soon | 70.4% | Coming soon |
| Kimi Hallu Bench Hard (tools) | Coming soon | 8.3% | Coming soon |
| ExploitGym | Coming soon | 20.7% | Coming soon |
| MazeBench | Coming soon | 2% | Coming soon |

### Coding

- Winner: Not comparable
- Hy4 public-lane score: Coming soon
- Kimi K3.1 Pro public-lane score: Coming soon

| Benchmark | Hy4 | Kimi K3.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| DeepSWE | 74.9% | 75.5% | Kimi K3.1 Pro |
| sweMarathon | 43.8% | 51.7% | Kimi K3.1 Pro |
| ProgramBench | 30.0% | Coming soon | Coming soon |
| FrontierCode 2.0 | 31.0% | Coming soon | Coming soon |
| PostTrainBench v1.2 | 35.2% | 36.5% | Kimi K3.1 Pro |
| ProgramBench (binary) | Coming soon | 31.5% | Coming soon |
| Kimi Code Bench v2 | Coming soon | 77.1% | Coming soon |
| Kimi Code Bench 3.0 Long-horizon | Coming soon | 61.2% | Coming soon |
| Bug Hunt Bench | Coming soon | 36.0 fixes | Coming soon |

### Reasoning

- Winner: Not comparable
- Hy4 public-lane score: Coming soon
- Kimi K3.1 Pro public-lane score: 82.5 (Unranked · 2 rankable rows)

### Multimodal & Grounded

- Winner: Not comparable
- Hy4 public-lane score: Coming soon
- Kimi K3.1 Pro public-lane score: 100 (#1/58)

| Benchmark | Hy4 | Kimi K3.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 78.6% | 84.1% | Kimi K3.1 Pro |
| ZeroBench w/ Python | 55.4% | 63.0% | Kimi K3.1 Pro |
| OfficeQA Pro | Coming soon | 67.4% | Coming soon |
| OfficeQA Pro v2 | Coming soon | 64.4% | Coming soon |
| BenchCAD Vision2Code (no tools) | Coming soon | 0.728 | Coming soon |
| BenchCAD Vision2Code (tools) | Coming soon | 0.927 | Coming soon |
| MMMU-Pro w/ Python | Coming soon | 90% | Coming soon |
| CharXiv | Coming soon | 93.4% | Coming soon |
| CharXiv w/o tools | Coming soon | 89% | Coming soon |
| Chartography (tools) | Coming soon | 90.2% | Coming soon |
| BabyVision w/ Python | Coming soon | 95.4% | Coming soon |
| ZeroBench | Coming soon | 39.0% | Coming soon |
| GDP.pdf (Gemini judge) | Coming soon | 34.6% | Coming soon |
| GDP.pdf w/ Python (Gemini judge) | Coming soon | 85.7% | Coming soon |
| PerceptionBench | Coming soon | 68.3% | Coming soon |

### Knowledge

- Winner: Not comparable
- Hy4 public-lane score: Coming soon
- Kimi K3.1 Pro public-lane score: 75.1 (Supported · #13/179)

| Benchmark | Hy4 | Kimi K3.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| HLE | 59.1% | 70% | Kimi K3.1 Pro |
| GPQA | Coming soon | 94.2% | Coming soon |
| GPQA-D | Coming soon | 94.2% | Coming soon |
| HLE w/o tools | Coming soon | 51.1% | Coming soon |
| Kimi Hallu Bench | Coming soon | 5.4% | Coming soon |

## FAQ

### Which is better overall, Hy4 or Kimi K3.1 Pro?

Kimi K3.1 Pro has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

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

Hy4 currently has 15 sourced benchmark scores on BenchLM.

### How many benchmarks does Kimi K3.1 Pro cover on BenchLM?

Kimi K3.1 Pro currently has 45 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Hy4 vs Hy4 preview](/compare/hy4-vs-hy4-preview)
- [Kimi K3.1 Pro vs Hy4 preview](/compare/hy4-preview-vs-kimi-3-1-pro)
- [Hy4 vs Gemini 4 Carbon](/compare/gemini-4-carbon-vs-hy4)
- [Kimi K3.1 Pro vs Gemini 4 Carbon](/compare/gemini-4-carbon-vs-kimi-3-1-pro)

## Explore More

- [Hy4 profile](/models/hy4)
- [Kimi K3.1 Pro profile](/models/kimi-3-1-pro)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)