Space Bunny Alpha (Stealth) vs Union Alpha (Stealth)
A direct, empirical evaluation of Space Bunny Alpha (Stealth) (MiniMax (Unannounced Stealth Release via OpenRouter)) against Union Alpha (Stealth) (OpenRouter & OpenCode).
Space Bunny Alpha (Stealth)
Developed by MiniMax (Unannounced Stealth Release via OpenRouter) · Proprietary Omni-Modal Frontier Architecture parameters
Massive 512K output codebases, single-shot 3D voxel world generation, native audio/video multimodal debugging, and high-context software synthesis.
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 | Space Bunny Alpha (Stealth) | Union Alpha (Stealth) |
|---|---|---|
| SWE-bench Verified | 65.4% | 74.2% |
| MMLU-Pro | 86.2% | 89.8% |
| MATH-500 | 92.8% | 95.4% |
| Context Window | 1,000,000 tokens | 256,000 tokens |
| Input Pricing (per 1M) | $0.00 | $0.00 |
| Output Pricing (per 1M) | $0.00 | $0.00 |