Gemini 3.8 Flash Cyber vs Hy4 preview: Specs & Benchmark Comparison
Gemini 3.8 Flash Cyber is developed by Google, while Hy4 preview comes from Tencent. Hy4 preview was released in August 2026, and Gemini 3.8 Flash Cyber followed a month later in September 2026. Hy4 preview has a published size of about 770 billion parameters; Google has not disclosed the parameter count of Gemini 3.8 Flash Cyber.
We have 4 benchmark results for Gemini 3.8 Flash Cyber and 32 benchmark results for Hy4 preview, but they overlap on a single test: CyberGym, where Gemini 3.8 Flash Cyber scores 86.2% against 78.4%.
| Characteristic | Gemini 3.8 Flash Cyber | Hy4 preview |
|---|---|---|
| Company | Tencent | |
| Release Date | September 2, 2026 | August 28, 2026 |
| Parameters | — | 770B |
| Multimodal | No | No |
| Average Score | 74.6% | 58.7% |
| Benchmarks | ||
| CyberGym | 86.2% | 78.4% |
Visual Benchmark Comparison
Verdict
Both models show equal results — the choice depends on your specific use case.
Both models show comparable average scores: Gemini 3.8 Flash Cyber — 0.7, Hy4 preview — 0.6.
Both models were released around the same time: 9/2/2026 and 8/28/2026.
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Frequently Asked Questions
Which is better for coding — Gemini 3.8 Flash Cyber or Hy4 preview?
Which model is cheaper — Gemini 3.8 Flash Cyber or Hy4 preview?
Which has a larger context window — Gemini 3.8 Flash Cyber or Hy4 preview?
The Gemini 3.8 Flash Cyber and Hy4 preview comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the Gemini 3.8 Flash Cyber or Hy4 preview page. See also the complete list of AI model comparisons.