# Hy4 vs Step 5 Preview

> Side-by-side benchmark comparison for Hy4 and Step 5 Preview across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/hy4-vs-step-5-preview
- Last updated: November 4, 2026

- Shared sourced benchmarks: 9
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Step 5 Preview leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- Step 5 Preview has the higher overall point estimate 56.15 to 0. Conditional score ranges do not establish rank confidence.
- The biggest single benchmark swing is ProgramBench in Coding, with scores of 30.0% and 80.5%.
- Hy4 is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.

## Model Snapshot

| Property | Hy4 | Step 5 Preview |
|----------|----------|----------|
| Creator | Tencent | StepFun |
| Type | Pending | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 1M |
| Overall Score | null | 56.15 |
| Benchmarks Covered | 15 | 24 |
| Pricing (input/output) | $0.834 / $2.501 | $1.00 / $2.70 |

## Category Breakdown

### Agentic

- Winner: Not comparable
- Hy4 public-lane score: Coming soon
- Step 5 Preview public-lane score: 54.7 (Estimated · #42/135)

| Benchmark | Hy4 | Step 5 Preview | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 4.0 | 44.40% | 33.30% | Hy4 |
| Terminal-Bench-Science 0.1 | 19.8% | Coming soon | Coming soon |
| HLE w/ tools | 59.1% | Coming soon | Coming soon |
| Agents' Last Exam | 41.0% | 29.5% | Hy4 |
| APEX-Agents | 75.2% | 37.8% | Hy4 |
| AutomationBench | 56.2% | 44.0% | Hy4 |
| OSWorld 2.1 | 78.9% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 85.0% | Coming soon |
| CyberGym | Coming soon | 84.7% | Coming soon |
| Toolathlon-Verified | Coming soon | 74.1% | Coming soon |
| MCP Atlas | Coming soon | 85.6% | Coming soon |
| JobBench | Coming soon | 59.0% | Coming soon |
| DRACO | Coming soon | 83.3% | Coming soon |
| BrowseComp | Coming soon | 88.7% | Coming soon |
| Hermes Index | Coming soon | 32.8% | Coming soon |
| Hermes Bench | Coming soon | 69.2% | Coming soon |

### Coding

- Winner: Not comparable
- Hy4 public-lane score: Coming soon
- Step 5 Preview public-lane score: 48.3 (Estimated · #48/156)

| Benchmark | Hy4 | Step 5 Preview | Winner |
|-----------|-----------|-----------|--------|
| DeepSWE | 74.9% | 67.7% | Hy4 |
| sweMarathon | 43.8% | 72.7% | Step 5 Preview |
| ProgramBench | 30.0% | 80.5% | Step 5 Preview |
| FrontierCode 2.0 | 31.0% | Coming soon | Coming soon |
| PostTrainBench v1.2 | 35.2% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 85.0% | Coming soon |
| SciCode | Coming soon | 58.9% | Coming soon |
| MLS-Bench Lite | Coming soon | 40.5% | Coming soon |

### Reasoning

- Winner: Not comparable
- Hy4 public-lane score: Coming soon
- Step 5 Preview public-lane score: 82.5 (Unranked · 2 rankable rows)

| Benchmark | Hy4 | Step 5 Preview | Winner |
|-----------|-----------|-----------|--------|
| CritPt | Coming soon | 20.9% | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- Hy4 public-lane score: Coming soon
- Step 5 Preview public-lane score: 73.3 (#32/58)

| Benchmark | Hy4 | Step 5 Preview | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 78.6% | 76% | Hy4 |
| ZeroBench w/ Python | 55.4% | Coming soon | Coming soon |
| OfficeQA Pro | Coming soon | 60.3% | Coming soon |

### Knowledge

- Winner: Not comparable
- Hy4 public-lane score: Coming soon
- Step 5 Preview public-lane score: 59.9 (Supported · #46/179)

| Benchmark | Hy4 | Step 5 Preview | Winner |
|-----------|-----------|-----------|--------|
| HLE | 59.1% | 46.5% | Hy4 |
| GPQA-D | Coming soon | 93.5% | Coming soon |

## FAQ

### Which is better overall, Hy4 or Step 5 Preview?

Step 5 Preview 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 Step 5 Preview cover on BenchLM?

Step 5 Preview currently has 24 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Hy4 vs Hy4 preview](/compare/hy4-vs-hy4-preview)
- [Step 5 Preview vs Hy4 preview](/compare/hy4-preview-vs-step-5-preview)
- [Hy4 vs Gemini 4 Carbon](/compare/gemini-4-carbon-vs-hy4)
- [Step 5 Preview vs Gemini 4 Carbon](/compare/gemini-4-carbon-vs-step-5-preview)

## Explore More

- [Hy4 profile](/models/hy4)
- [Step 5 Preview profile](/models/step-5-preview)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)