Tencent Hy4 Preview vs Union Alpha
Specs, per-token pricing, and live benchmark scores — refreshed daily from our benchmark database.
Specs & pricing
| Tencent Hy4 Preview | Union Alpha | |
|---|---|---|
| Company | Tencent | Stealth |
| Released | Aug 2026 | Sep 2026 |
| Context window | 1.0M | 262K |
| Input /1M tokens | $0.834 | free |
| Output /1M tokens | $2.501 | free |
| Open weights | Yes | No |
Benchmarks
| Benchmark | Tencent Hy4 Preview | Union Alpha |
|---|---|---|
| GPQA | 92.3% | — |
Scores come from published leaderboards and official model cards (sources listed on the benchmarks page) and refresh daily. Pricing via vendor pages and OpenRouter.