Manus 2.0 vs Union Alpha (Stealth)
A direct, empirical evaluation of Manus 2.0 (Manus AI) against Union Alpha (Stealth) (OpenRouter & OpenCode).
Manus 2.0
Developed by Manus AI · Multi-Agent Autonomous Orchestration Hierarchy parameters
End-to-end multi-tab browser automation (74.8% GAIA), complex financial web extraction, asynchronous multi-agent coordination, and isolated microVM workflows.
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 | Manus 2.0 | Union Alpha (Stealth) |
|---|---|---|
| SWE-bench Verified | 74.8% | 74.2% |
| MMLU-Pro | 85.6% | 89.8% |
| MATH-500 | 89.4% | 95.4% |
| Context Window | 500,000 tokens | 256,000 tokens |
| Input Pricing (per 1M) | $3.50 | $0.00 |
| Output Pricing (per 1M) | $15.00 | $0.00 |