The AI arena is free today

Open Superagent

Gemini 3.8 Flash Cyber vs Hy4 preview

Gemini 3.8 Flash Cyber and Hy4 preview are closely matched at 42.7 and 51.5 on the LLM Stats Score.

Google · Tencent · Updated for 2026

Which is better?

Gemini 3.8 Flash Cyber and Hy4 preview are closely matched on the overall LLM Stats Score at 42.7 and 51.5.

In the 1 individual benchmarks reported for both models, Gemini 3.8 Flash Cyber 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 3.8 Flash Cyber

  • you value its reported benchmark strengths — it wins 1 of 1 exact shared results
  • you want the most recent training data — it shipped Sep 2026

Choose Hy4 preview

  • you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

Gemini 3.8 Flash Cyber
Google
Hy4 preview
Tencent
Core performance indexes
LLM Stats Score
42.7
#44
51.5
#12
Coding
36.1
#25
40.6
#11
Agents
31.7
#25
37.1
#12
Cost, coverage & limits
Benchmark wins
1 of 1
0 of 1
Input price
— / M
— / M
Output price
— / M
— / M
Context window
—
—

Individual benchmarks

4 reported for Gemini 3.8 Flash Cyber · 32 for Hy4 preview

1 shared

Gemini 3.8 Flash Cyber outperforms in 1 benchmarks (CyberGym), while Hy4 preview is better at 0 benchmarks.

Gemini 3.8 Flash Cyber significantly outperforms across most benchmarks.

Wed Sep 02 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

License

Usage and distribution terms

Gemini 3.8 Flash Cyber 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 3.8 Flash Cyber

Proprietary

Closed source

Hy4 preview

Apache 2.0

Open weights

Release Timeline

When each model was launched

Gemini 3.8 Flash Cyber was released on 2026-09-02, while Hy4 preview was released on 2026-08-28.

Gemini 3.8 Flash Cyber is 0 month newer than Hy4 preview.

Gemini 3.8 Flash Cyber

Sep 2, 2026

0 days ago

5d newer
Hy4 preview

Aug 28, 2026

5 days ago

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 3.8 Flash Cyber and Hy4 preview side-by-side, then vote on the output you prefer.

Gemini 3.8 Flash Cyber
✓ Preferred
Hy4 preview
Open in Playground

FAQ

Common questions about Gemini 3.8 Flash Cyber vs Hy4 preview.

Which is better, Gemini 3.8 Flash Cyber or Hy4 preview?

Gemini 3.8 Flash Cyber and Hy4 preview are closely matched on the LLM Stats Score at 42.7 and 51.5. Gemini 3.8 Flash Cyber 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 3.8 Flash Cyber compare to Hy4 preview in benchmarks?

Gemini 3.8 Flash Cyber scores Gray Swan IPI Benchmark: 94.0%, CyberGym: 86.2%, Google Real-world Vulnerability Discovery: 71.0%, CWE-Bench: 47.2%. 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 3.8 Flash Cyber and Hy4 preview?

Key differences include LLM Stats Score (42.7 vs 51.5), licensing (Proprietary vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 3.8 Flash Cyber and Hy4 preview?

Gemini 3.8 Flash Cyber is developed by Google and Hy4 preview is developed by Tencent.

Related comparisons