Grok 4.5 vs Hy4 preview: Specs & Benchmark Comparison
| Characteristic | Grok 4.5 | Hy4 preview |
|---|---|---|
| Company | xAI | Tencent |
| Release Date | July 16, 2026 | August 28, 2026 |
| Parameters | — | 770B |
| Multimodal | Yes | No |
| Context (input) | 500K | — |
| Input Price / 1M | $2.00 | — |
| Output Price / 1M | $6.00 | — |
| Average Score | 0.8 | 0.6 |
| Benchmarks | ||
| Terminal-Bench 2.1 | 0.8 | 0.9 |
| GPQA | 0.9 | 0.9 |
| SWE-Bench Pro | 0.7 | 0.7 |
Visual Benchmark Comparison
Grok 4.5
Hy4 preview
Terminal-Bench 2.10.8 vs 0.9
0.8
0.9
GPQA0.9 vs 0.9
0.9
0.9
SWE-Bench Pro0.7 vs 0.7
0.7
0.7
Verdict
Hy4 preview leads in 1 out of 2 comparison categories.
Overall Performance
Both models show comparable average scores: Grok 4.5 — 0.8, Hy4 preview — 0.6.
Recency
Hy4 preview is newer: released 8/28/2026 vs 7/16/2026.
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Frequently Asked Questions
Which is better for coding — Grok 4.5 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 — Grok 4.5 or Hy4 preview?
API pricing data is available on the individual model pages.
Which has a larger context window — Grok 4.5 or Hy4 preview?
Context window data is available on the individual model pages.
The Grok 4.5 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 Grok 4.5 or Hy4 preview page. See also the complete list of AI model comparisons.