GPT-6 Astra vs Hy4 preview: Specs & Benchmark Comparison
| Characteristic | GPT-6 Astra | Hy4 preview |
|---|---|---|
| Company | OpenAI | Tencent |
| Release Date | September 3, 2026 | August 28, 2026 |
| Parameters | — | 770B |
| Multimodal | Yes | No |
| Context (input) | 1.1M | — |
| Context (output) | 128K | — |
| Input Price / 1M | $10.00 | — |
| Output Price / 1M | $50.00 | — |
| Average Score | 0.7 | 0.6 |
| Benchmarks | ||
| Agents' Last Exam | 0.6 | 0.2 |
| AutomationBench | 0.4 | 0.3 |
| GPQA Diamond | 1.0 | 0.9 |
| Humanity's Last Exam (with tools, text-only) | 0.6 | 0.6 |
Visual Benchmark Comparison
GPT-6 Astra
Hy4 preview
Agents' Last Exam0.6 vs 0.2
0.6
0.2
AutomationBench0.4 vs 0.3
0.4
0.3
GPQA Diamond1.0 vs 0.9
1.0
0.9
Humanity's Last Exam (with tools, text-only)0.6 vs 0.6
0.6
0.6
Verdict
Both models show equal results — the choice depends on your specific use case.
Overall Performance
Both models show comparable average scores: GPT-6 Astra — 0.7, Hy4 preview — 0.6.
Recency
Both models were released around the same time: 9/3/2026 and 8/28/2026.
More About These Models
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Frequently Asked Questions
Which is better for coding — GPT-6 Astra 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 — GPT-6 Astra or Hy4 preview?
API pricing data is available on the individual model pages.
Which has a larger context window — GPT-6 Astra or Hy4 preview?
Context window data is available on the individual model pages.
The GPT-6 Astra 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 GPT-6 Astra or Hy4 preview page. See also the complete list of AI model comparisons.