Model comparison
Solar Pro 4 vs Hunyuan Hy3
- Input
- $0.30
- Output
- $1.20
- Context
- 512K tokens
- Released
- 2026-08-06
- Input
- ¥1.00
- Output
- ¥4.00
- Context
- 256K
- Released
- 2026-07-06
Hunyuan Hy3 scores higher on 2 of the 2 benchmarks both models report; Solar Pro 4 has the larger context window (512K vs 256K); Hunyuan Hy3 ships open weights while Solar Pro 4 is API-only.
Specs and pricing side by side
| Spec | Solar Pro 4 | Hunyuan Hy3 |
|---|---|---|
| Maker | Upstage | Tencent |
| Released | 2026-08-06 | 2026-07-06 |
| Context window | 512K tokens | 256K |
| Max output | 128K tokens | not published |
| Input price | $0.30 | ¥1.00 |
| Output price | $1.20 | ¥4.00 |
| Parameters | Undisclosed | 295B total · 21B active |
| License | Proprietary (Upstage API and on-premises) | Apache-2.0 |
| Weights | API only | Open weights |
| Modalities | Text | Textsame |
| Knowledge cutoff | February 2026 | not published |
Benchmarks both models report
| Benchmark | Solar Pro 4 | Hunyuan Hy3 |
|---|---|---|
| GPQA Diamond | 89% | 90.4% |
| SWE-Bench Verified | 70.6% | 78% |
Scores are as published by each maker or its cited source; harness, reasoning effort and date can differ between rows, so treat small gaps as ties. Sources are listed on each model page.
Which one should you pick?
Pick Solar Pro 4 if…
- You need the longer context (512K vs 256K).
- Your use case is: reach for it when an agent has to work across several long documents, contracts or data files in one session.
Pick Hunyuan Hy3 if…
- You care about GPQA Diamond, SWE-Bench Verified (it scores higher on 2 shared benchmarks).
- You want to self-host or fine-tune (open weights, Apache-2.0).
- Your use case is: self-hosted agentic coding, tool use and terminal automation via vLLM or SGLang recipes.
FAQ
Which is better, Solar Pro 4 or Hunyuan Hy3?
Hunyuan Hy3 scores higher on 2 of the 2 benchmarks both models report; Solar Pro 4 has the larger context window (512K vs 256K); Hunyuan Hy3 ships open weights while Solar Pro 4 is API-only. The better pick depends on whether you value benchmark scores, price per token, context length or openness for your workload.
What are the context windows of Solar Pro 4 and Hunyuan Hy3?
Solar Pro 4 offers 512K tokens with up to 128K tokens output; Hunyuan Hy3 offers 256K.
Is Solar Pro 4 newer than Hunyuan Hy3?
Solar Pro 4 was released 2026-08-06; Hunyuan Hy3 was released 2026-07-06.