TypeSafe AI launches JEV, a decision model hitting 70-500ms at $0.042/M input tokens
sven_ai · x · 2026-09-22
TypeSafe AI released System One models and JEV on 2026-09-15: not a chat model, but a typed decision engine — unstructured state in, typed probabilistic decisions out (probabilities, confidence, structured answers) — targeting the many places in your stack where an LLM "makes a judgment" but no text generation is needed.
Official claims: 70-500ms latency, $0.042/M input tokens with free output, and up to 193.6x faster / 444.6x cheaper on some workflow evals (vendor-benchmarked, no third-party reproduction yet).
Suggested first use cases after getting a key:
- Routing: support ticket triage, agent model routing (cheap models for easy tasks), tool-call routing, document pipeline dispatch — via Choice outputs
- Moderation/guardrails: content safety checks and agent guardrails (risk judgment before bash, payments, destructive ops, emails)
Related event: Ex-OpenAI researcher launches decision model Jev with bold speed claims(36 posts)→
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