# Gemini 3.5 Flash-Lite vs Hy4 preview

> Side-by-side benchmark comparison for Gemini 3.5 Flash-Lite and Hy4 preview across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemini-3-5-flash-lite-vs-hy4-preview
- Last updated: October 13, 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 60.86 to 49.4. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in coding, where the averages are 36.1 for Gemini 3.5 Flash-Lite and 57.1 for Hy4 preview.
- The biggest single benchmark swing is Terminal-Bench 2.1 in Agentic, with scores of 54.0% and 85.4%.
- Hy4 preview is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.

## Model Snapshot

| Property | Gemini 3.5 Flash-Lite | Hy4 preview |
|----------|----------|----------|
| Creator | Google | Tencent |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 1M |
| Overall Score | 49.4 | 60.86 |
| Benchmarks Covered | 12 | 30 |
| Pricing (input/output) | $0.30 / $2.50 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Directional only
- Gemini 3.5 Flash-Lite public-lane score: 34.3 (Supported · #77/123)
- Hy4 preview public-lane score: 54.5 (Estimated · #37/123)

| Benchmark | Gemini 3.5 Flash-Lite | Hy4 preview | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 54.0% | 85.4% | Hy4 preview |
| OSWorld-Verified | 74% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 50.2% | 55.1% | Hy4 preview |
| CyberGym | Coming soon | 78.4% | Coming soon |
| WideResearch | Coming soon | 83.9% | Coming soon |
| DRACO | Coming soon | 77.2% | Coming soon |
| MCP Atlas | Coming soon | 83.7% | Coming soon |
| Toolathlon-Verified | Coming soon | 74.1% | Coming soon |
| APEX-Agents | Coming soon | 37.1% | Coming soon |
| skillsBench | Coming soon | 62.9% | Coming soon |
| JobBench | Coming soon | 61.7% | Coming soon |
| Agents' Last Exam | Coming soon | 22.8% | Coming soon |
| AutomationBench | Coming soon | 32.1% | Coming soon |
| BankerToolBench | Coming soon | 78.6% | Coming soon |
| HLE w/ tools | Coming soon | 55.4% | Coming soon |
| CWE-bench v1 | Coming soon | 53.0% | Coming soon |

### Coding

- Winner: Hy4 preview
- Gemini 3.5 Flash-Lite public-lane score: 36.1 (Supported · #74/148)
- Hy4 preview public-lane score: 57.1 (Supported · #26/148)

| Benchmark | Gemini 3.5 Flash-Lite | Hy4 preview | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 54.0% | 85.4% | Hy4 preview |
| SWE-bench Pro | 54.2% | 65.7% | Hy4 preview |
| LiveCodeBench (Vals) | 79.0% | Coming soon | Coming soon |
| SWE-bench (Vals) | 75.0% | Coming soon | Coming soon |
| SWE Multilingual | Coming soon | 82.9% | Coming soon |
| DeepSWE | Coming soon | 64.3% | Coming soon |
| NL2Repo | Coming soon | 58.9% | Coming soon |
| ProgramBench | Coming soon | 17.5% | Coming soon |
| PostTrain Bench | Coming soon | 35.6% | Coming soon |
| sweMarathon | Coming soon | 31.9% | Coming soon |

### Reasoning

- Winner: Not comparable
- Gemini 3.5 Flash-Lite public-lane score: 71.8 (Unranked · 3 rankable rows)
- Hy4 preview public-lane score: Coming soon

| Benchmark | Gemini 3.5 Flash-Lite | Hy4 preview | Winner |
|-----------|-----------|-----------|--------|
| MRCRv2 | 72.2% | Coming soon | Coming soon |
| CritPt | Coming soon | 16.9% | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- Gemini 3.5 Flash-Lite public-lane score: 80.9 (Unranked · 1 rankable row)
- Hy4 preview public-lane score: 88.3 (Unranked · 1 rankable row)

| Benchmark | Gemini 3.5 Flash-Lite | Hy4 preview | Winner |
|-----------|-----------|-----------|--------|
| OfficeQA Pro | Coming soon | 66.2% | Coming soon |

### Knowledge

- Winner: Directional only
- Gemini 3.5 Flash-Lite public-lane score: 48.2 (Supported · #85/180)
- Hy4 preview public-lane score: 63.6 (Estimated · #39/180)

| Benchmark | Gemini 3.5 Flash-Lite | Hy4 preview | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | 83.8% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 85.8% | Coming soon | Coming soon |
| GPQA | Coming soon | 92.3% | Coming soon |
| GPQA-D | Coming soon | 92.3% | Coming soon |
| HLE | Coming soon | 55.4% | Coming soon |
| HLE w/o tools | Coming soon | 43.4% | Coming soon |

### Mathematics

- Winner: Not comparable
- Gemini 3.5 Flash-Lite public-lane score: 37.8 (Unranked · 2 rankable rows)
- Hy4 preview public-lane score: Coming soon

| Benchmark | Gemini 3.5 Flash-Lite | Hy4 preview | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 25.965% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 0.000% | Coming soon | Coming soon |
| Apex | Coming soon | 74.2% | Coming soon |

## FAQ

### Which is better overall, Gemini 3.5 Flash-Lite or Hy4 preview?

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

### Where is the biggest gap between Gemini 3.5 Flash-Lite and Hy4 preview?

The widest category gap is in coding, where the averages are 36.1 for Gemini 3.5 Flash-Lite and 57.1 for Hy4 preview.

### How many benchmarks does Gemini 3.5 Flash-Lite cover on BenchLM?

Gemini 3.5 Flash-Lite currently has 12 sourced benchmark scores on BenchLM.

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

Hy4 preview currently has 30 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Gemini 3.5 Flash-Lite vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-gemini-3-5-flash-lite)
- [Hy4 preview vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-hy4-preview)
- [Gemini 3.5 Flash-Lite vs GPT-6.1 Sol](/compare/gemini-3-5-flash-lite-vs-gpt-6-1-sol)
- [Hy4 preview vs GPT-6.1 Sol](/compare/gpt-6-1-sol-vs-hy4-preview)

## Explore More

- [Gemini 3.5 Flash-Lite profile](/models/gemini-3-5-flash-lite)
- [Hy4 preview profile](/models/hy4-preview)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)