DeepSeek-R1 vs Union Alpha (Stealth)
A direct, empirical evaluation of DeepSeek-R1 (DeepSeek-AI) against Union Alpha (Stealth) (OpenRouter & OpenCode).
DeepSeek-R1
Developed by DeepSeek-AI · 671B parameters
Olympiad mathematics, logic verification, and autonomous thinking chains.
Union Alpha (Stealth)
Developed by OpenRouter & OpenCode · Multi-Model Ensemble Mixture parameters
Terminal coding agents, pull-request synthesis, multi-model consensus verification, and zero-cost autonomous refactoring.
| Metric | DeepSeek-R1 | Union Alpha (Stealth) |
|---|---|---|
| SWE-bench Verified | 49.2% | 74.2% |
| MMLU-Pro | 84% | 89.8% |
| MATH-500 | 97.3% | 95.4% |
| Context Window | 128,000 tokens | 256,000 tokens |
| Input Pricing (per 1M) | $0.55 | $0.00 |
| Output Pricing (per 1M) | $2.19 | $0.00 |