TypeSafe AI Jev vs Union Alpha (Stealth)
A direct, empirical evaluation of TypeSafe AI Jev (TypeSafe AI (Diogo Almeida)) against Union Alpha (Stealth) (OpenRouter & OpenCode).
TypeSafe AI Jev
Developed by TypeSafe AI (Diogo Almeida) · Non-Autoregressive System 1 Transformer parameters
Sub-15ms operational tasks, 100% schema-valid JSON extraction, deterministic tool dispatch, and high-throughput agent routing.
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 | TypeSafe AI Jev | Union Alpha (Stealth) |
|---|---|---|
| SWE-bench Verified | 68.4% | 74.2% |
| MMLU-Pro | 84.6% | 89.8% |
| MATH-500 | 91.2% | 95.4% |
| Context Window | 32,000 tokens | 256,000 tokens |
| Input Pricing (per 1M) | $0.06 | $0.00 |
| Output Pricing (per 1M) | $0.12 | $0.00 |