Jev versus centralized decisions: a practical comparison
Centralized decisions means one service owns questions, thresholds, and traces. Jev is often the model behind that service — not a replacement for having a service.
Unofficial. Platform-team habits live on Jev for platform teams. docs.typesafe.ai.
Comparison scope
If every app embeds raw SDK calls, you will fork criteria and floors. Centralize the contract; still call TypeSafe (or a gateway) from that one place.
Criteria that decide the architecture
| Axis | Jev (System One) | Centralized decision services |
|---|---|---|
| Question git history | Your mono-repo module | Scattered prompts |
| Model pin | One config | Drift |
| Door adapters | One matrix | Copy-paste boolean vs noul bugs |
| Jev itself | The model | The model |
Decision quality and control
Centralization without eval is a single point of confident failure. Pair with offline evaluation.
Integration trade-offs
Apps call route(ticket) -> enum. The service maps enum ← Jev answers. Product teams never see raw Nouls unless they opt in.
TypeSafe’s public models page lists jev-1.13 at $0.042 per million input tokens with output tokens free — a vendor claim, not a jev.pro measurement. Confirm on the models page before you bid.
When each approach fits
Prefer Jev when
- You want one decision layer (Jev-backed)
Prefer Centralized decision services when
- A single app with three questions — a library may suffice
Central service + Jev model + edge caches if needed (see edge page).
What this page does not claim
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Not an enterprise architecture sales pitch.
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Schema-safe output is not the same as factual correctness.
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No independent bake-off numbers live here.
FAQ
Is TypeSafe a decision manager like FICO Blaze? Different era, different contract. Jev is a hosted model, not a BRMS UI.
Multi-tenant criteria? Your service. Jev is not fine-tuned per tenant.
Disclaimer
This is an independent unofficial site and is not affiliated with TypeSafe AI; official documentation is available at https://docs.typesafe.ai. Never treat jev.pro as TypeSafe official documentation. We do not sell, issue, or proxy API keys.
Hub: Comparisons. Siblings: vs edge decisions, for platform teams, reference architecture. Canonical: https://docs.typesafe.ai.
Sources
Public TypeSafe or adjacent documentation only. No private claims.