# Hy4 preview vs Particle-1

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

- Canonical page: https://benchlm.ai/compare/hy4-preview-vs-particle-1
- Last updated: October 29, 2026

- Shared sourced benchmarks: 4
- 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 61.46 to 0. Conditional score ranges do not establish rank confidence.
- The biggest single benchmark swing is DeepSWE in Coding, with scores of 64.3% and 72.6%.
- Hy4 preview is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.

## Model Snapshot

| Property | Hy4 preview | Particle-1 |
|----------|----------|----------|
| Creator | Tencent | Particle AI |
| Type | Open Weight | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 1M |
| Overall Score | 61.46 | null |
| Benchmarks Covered | 33 | 5 |
| Pricing (input/output) | $0.00 / $0.00 | $0.25 / $1.00 |

## Category Breakdown

### Agentic

- Winner: Not comparable
- Hy4 preview public-lane score: 57.3 (Estimated · #37/135)
- Particle-1 public-lane score: Coming soon

| Benchmark | Hy4 preview | Particle-1 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 85.4% | 79.9% | Hy4 preview |
| CyberGym | 78.4% | Coming soon | Coming soon |
| WideResearch | 83.9% | Coming soon | Coming soon |
| DRACO | 77.2% | Coming soon | Coming soon |
| MCP Atlas | 83.7% | Coming soon | Coming soon |
| 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% | Coming soon | Coming soon |
| CWE-bench v1 | 53.0% | Coming soon | Coming soon |
| Hermes Index | 26.1% | Coming soon | Coming soon |
| Hermes Bench | 58.6% | Coming soon | Coming soon |

### Coding

- Winner: Not comparable
- Hy4 preview public-lane score: 56.3 (Supported · #26/156)
- Particle-1 public-lane score: Coming soon

| Benchmark | Hy4 preview | Particle-1 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 85.4% | 79.9% | Hy4 preview |
| SWE-bench Pro | 65.7% | Coming soon | Coming soon |
| SWE Multilingual | 82.9% | Coming soon | Coming soon |
| DeepSWE | 64.3% | 72.6% | Particle-1 |
| 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 |

### Reasoning

- Winner: Not comparable
- Hy4 preview public-lane score: Coming soon
- Particle-1 public-lane score: Coming soon

| Benchmark | Hy4 preview | Particle-1 | Winner |
|-----------|-----------|-----------|--------|
| STEMBench | 2.59 | Coming soon | Coming soon |
| CritPt | 16.9% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- Hy4 preview public-lane score: 86.6 (Unranked · 1 rankable row)
- Particle-1 public-lane score: Coming soon

| Benchmark | Hy4 preview | Particle-1 | Winner |
|-----------|-----------|-----------|--------|
| OfficeQA Pro | 66.2% | Coming soon | Coming soon |

### Knowledge

- Winner: Not comparable
- Hy4 preview public-lane score: 64.2 (Estimated · #37/179)
- Particle-1 public-lane score: Coming soon

| Benchmark | Hy4 preview | Particle-1 | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 92.3% | Coming soon | Coming soon |
| GPQA-D | 92.3% | 90.4% | Hy4 preview |
| HLE | 55.4% | Coming soon | Coming soon |
| HLE w/o tools | 43.4% | Coming soon | Coming soon |
| MMLU | Coming soon | 86.1% | Coming soon |

### Mathematics

- Winner: Not comparable
- Hy4 preview public-lane score: Coming soon
- Particle-1 public-lane score: Coming soon

| Benchmark | Hy4 preview | Particle-1 | Winner |
|-----------|-----------|-----------|--------|
| Apex | 74.2% | Coming soon | Coming soon |

## FAQ

### Which is better overall, Hy4 preview or Particle-1?

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

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

Hy4 preview currently has 33 sourced benchmark scores on BenchLM.

### How many benchmarks does Particle-1 cover on BenchLM?

Particle-1 currently has 5 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Hy4 preview vs Gemini 4 Carbon](/compare/gemini-4-carbon-vs-hy4-preview)
- [Particle-1 vs Gemini 4 Carbon](/compare/gemini-4-carbon-vs-particle-1)
- [Hy4 preview vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-hy4-preview)
- [Particle-1 vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-particle-1)

## Explore More

- [Hy4 preview profile](/models/hy4-preview)
- [Particle-1 profile](/models/particle-1)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)