Jev AI Decision Model

How Jev turns context into decisions

What is Jev?

Jev is an AI decision model by TypeSafe AI, built for structured judgments. [1]

INPUT
Application state
Facts and context
DECISION
Jev judgment
Typed questions
ACTION
Code execution
Rules and actions

Three ways to ask

Example question

New-country login, then a large withdrawal. Anomalous?

Returns a value between 0 and 1.

Read source ↗

Illustrative resultAnomaly likelihood: 94%

Anomalous94%

Not anomalous6%

Fixed teaching data · No live model calls · Probabilities are not guarantees.

Common uses

Classification and routing

Detection and validation

Scoring and ranking

Thresholds and human review

Inside this trader

1
Market snapshot
Price · Order book · Recent trades
2
Choice: buy or sell?
Market state → Side + probabilities
3
Check limits and place an order
Risk limits → Price + size → Order

Why it can be faster and cheaper

How it works · Animation is illustrative [5]

AUTOREGRESSIVE

Generate tokens in sequence

PARALLEL EVALUATION

One state, independent questions

Shared state

Noul

Choice

Score

Structured results

Model speed & cost

Baseline: Claude Sonnet 5 = 1×

Model / Provider	Relative speed	Chart cost (USD)
JevTypeSafe AI	193.6×	$0.39

Claude Haiku 4.5Anthropic	6.2×	$19.49

Claude Opus 5Anthropic	2.1×	$176.05

Claude Sonnet 5Anthropic	1.0×	$117.38

GPT-5.6-LunaOpenAI	6.0×	$3.31

TypeSafe AI chart, not this project's measurements or API prices. Animation differences are compressed; use the labeled ratios. [7]