GLM-5.3 Flash vs Hy4 preview: Specs & Benchmark Comparison
| Characteristic | GLM-5.3 Flash | Hy4 preview |
|---|---|---|
| Company | Zhipu AI | Tencent |
| Release Date | August 26, 2026 | August 28, 2026 |
| Parameters | 320B | 770B |
| Multimodal | Yes | No |
| Context (input) | 1.0M | — |
| Context (output) | 131K | — |
| Input Price / 1M | $0.15 | — |
| Output Price / 1M | $0.50 | — |
| Average Score | 0.6 | 0.6 |
| Benchmarks | ||
| AutomationBench v1.0.6 | 0.5 | 0.3 |
| Toolathlon Verified | 0.8 | 0.7 |
| Agents' Last Exam | 0.3 | 0.2 |
| Terminal-Bench 2.1 | 0.8 | 0.9 |
Visual Benchmark Comparison
GLM-5.3 Flash
Hy4 preview
AutomationBench v1.0.60.5 vs 0.3
0.5
0.3
Toolathlon Verified0.8 vs 0.7
0.8
0.7
Agents' Last Exam0.3 vs 0.2
0.3
0.2
Terminal-Bench 2.10.8 vs 0.9
0.8
0.9
Verdict
Both models show equal results — the choice depends on your specific use case.
Overall Performance
Both models show comparable average scores: GLM-5.3 Flash — 0.6, Hy4 preview — 0.6.
Recency
Both models were released around the same time: 8/26/2026 and 8/28/2026.
More About These Models
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Frequently Asked Questions
Which is better for coding — GLM-5.3 Flash or Hy4 preview?
Direct comparison on the SWE-Bench benchmark is not available. We recommend reviewing other metrics on the comparison page.
Which model is cheaper — GLM-5.3 Flash or Hy4 preview?
API pricing data is available on the individual model pages.
Which has a larger context window — GLM-5.3 Flash or Hy4 preview?
Context window data is available on the individual model pages.
The GLM-5.3 Flash 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 GLM-5.3 Flash or Hy4 preview page. See also the complete list of AI model comparisons.