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Gemini Diffusion vs Hy4 preview

Hy4 preview leads the LLM Stats Score 51.1 to 1.0.

Google · Tencent · Updated for 2026

Which is better?

Hy4 preview leads the overall LLM Stats Score 51.1 to 1.0, ranking #14 overall.

In the 1 individual benchmarks reported for both models, Hy4 preview wins 1; this is a narrower head-to-head signal than the composite indexes.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Gemini Diffusion

  • you are already invested in the Google ecosystem

Choose Hy4 preview

  • overall performance matters — it scores 51.1 and ranks #14 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 1 of 1 exact shared results
  • you want the most recent training data — it shipped Aug 2026
  • you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

Gemini Diffusion
Google
Hy4 preview
Tencent
Core performance indexes
LLM Stats Score
1.0
#311
51.1
#14
Reasoning
1.0
#301
50.7
#11
Coding
3.0
#213
39.8
#12
Cost, coverage & limits
Benchmark wins
0 of 1
1 of 1
Input price
— / M
— / M
Output price
— / M
— / M
Context window
—
—

Individual benchmarks

10 reported for Gemini Diffusion · 32 for Hy4 preview

1 shared

Gemini Diffusion outperforms in 0 benchmarks, while Hy4 preview is better at 1 benchmark (GPQA).

Hy4 preview significantly outperforms across most benchmarks.

Fri Sep 04 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

License

Usage and distribution terms

Gemini Diffusion is licensed under a proprietary license, while Hy4 preview uses Apache 2.0.

License differences may affect how you can use these models in commercial or open-source projects.

Gemini Diffusion

Proprietary

Closed source

Hy4 preview

Apache 2.0

Open weights

Release Timeline

When each model was launched

Gemini Diffusion was released on 2025-05-20, while Hy4 preview was released on 2026-08-28.

Hy4 preview is 16 months newer than Gemini Diffusion.

Gemini Diffusion

May 20, 2025

1.3 years ago

Hy4 preview

Aug 28, 2026

6 days ago

1.3yr newer

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Gemini Diffusion and Hy4 preview side-by-side, then vote on the output you prefer.

Gemini Diffusion
✓ Preferred
Hy4 preview
Open in Playground

FAQ

Common questions about Gemini Diffusion vs Hy4 preview.

Which is better, Gemini Diffusion or Hy4 preview?

Hy4 preview leads the LLM Stats Score 51.1 to 1.0. Gemini Diffusion is made by Google and Hy4 preview is made by Tencent. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Gemini Diffusion compare to Hy4 preview in benchmarks?

Gemini Diffusion scores HumanEval: 89.6%, MBPP: 76.0%, Global-MMLU-Lite: 69.1%, LBPP (v2): 56.8%, BigCodeBench: 45.4%. Hy4 preview scores GPQA: 92.3%, Terminal-Bench 2.1: 85.4%, WideSearch: 83.9%, MCP Atlas: 83.7%, SWE-bench Multilingual: 82.9%.

What are the main differences between Gemini Diffusion and Hy4 preview?

Key differences include LLM Stats Score (1.0 vs 51.1), licensing (Proprietary vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini Diffusion and Hy4 preview?

Gemini Diffusion is developed by Google and Hy4 preview is developed by Tencent.

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