Atria Dawn Preview vs Hy4 preview: Specs & Benchmark Comparison
Atria Dawn Preview is developed by Shanghai AI Laboratory, while Hy4 preview comes from Tencent. Hy4 preview was released in August 2026, and Atria Dawn Preview followed a month later in September 2026. The two are similar in size, at about 744 billion and 770 billion parameters respectively.
The two models share 7 published benchmarks. Hy4 preview leads on 4 of them, Atria Dawn Preview on 3. The widest gaps are on AutomationBench, where Atria Dawn Preview scores 53.8% against 32.1%; CyberGym, where Atria Dawn Preview scores 86.5% against 78.4%. Averaged across everything we track, Atria Dawn Preview sits at 72.7% and Hy4 preview at 58.7%.
| Characteristic | Atria Dawn Preview | Hy4 preview |
|---|---|---|
| Company | Shanghai AI Laboratory | Tencent |
| Release Date | September 11, 2026 | August 28, 2026 |
| Parameters | 744B | 770B |
| Multimodal | No | No |
| Average Score | 72.7% | 58.7% |
| Benchmarks | ||
| AutomationBench | 53.8% | 32.1% |
| CyberGym | 86.5% | 78.4% |
| Terminal-Bench 2.1 | 78.3% | 85.4% |
| SWE-Bench Pro | 59.6% | 65.7% |
| SkillsBench | 66.4% | 62.9% |
| GDPval-AA | 52.8% | 55.9% |
| WideSearch | 81.9% | 83.9% |
Visual Benchmark Comparison
Verdict
Atria Dawn Preview leads in 1 out of 2 comparison categories.
Both models show comparable average scores: Atria Dawn Preview — 0.7, Hy4 preview — 0.6.
Atria Dawn Preview is newer: released 9/11/2026 vs 8/28/2026.
More About These Models
Related Comparisons
Frequently Asked Questions
Which is better for coding — Atria Dawn Preview or Hy4 preview?
Which model is cheaper — Atria Dawn Preview or Hy4 preview?
Which has a larger context window — Atria Dawn Preview or Hy4 preview?
The Atria Dawn Preview 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 Atria Dawn Preview or Hy4 preview page. See also the complete list of AI model comparisons.