Top 10 Jev use cases in agentic apps, ranked by theoretical gain (speed/cost/reliability) over LLMs: 1. Real-time loops (games/robotics): enables 10+ decisions/sec; LLMs too slow. 2. Browser/computer-use action selection: 100x+ cheaper/faster multi-step runs. 3. Tool risk gating: instant safe/unsafe per call; zero hallucination. 4. Model routing: routes cheap vs frontier; massive cost cut. 5. Goal/stuck checks: sub-second loop control. 6. Context compaction: keep/delete decisions beat lossy summaries. 7. Skill/tool selection: precise activation without prompt bloat. 8. Output/trace guardrails: calibrated jailbreak/policy checks. 9. Ticket/email triage: high-volume routing at 400x lower cost. 10. RAG reranking: relevance scores over candidates. Jev returns typed probs in 70-500ms; LLMs generate text slowly/expensively for same decisions.