Jev is TypeSafe AI's 'System One' frontier model designed for software automation. Rather than generating free-form text, it takes unstructured input state and returns typed, probabilistic decisions — Choice, Score, and Noul answers with calibrated probabilities that code can act on directly. Parallel sampling delivers response times of roughly 70–500ms, which the vendor states is about 20–200x faster and 40–400x cheaper than comparable LLM workflows, with output tokens free. Jev is available via console.typesafe.ai with no waitlist.
Fast, structured AI decisions for software automation
Jev Introduction
Key Features
- Typed decision outputs: Choice, Score, and Noul answers with calibrated probabilities
- Unstructured state input — no need to pre-structure data for decisions
- Parallel sampling with ~70–500ms response times
- Vendor-reported 20–200x faster and 40–400x cheaper than comparable LLM workflows
- Output tokens free of charge
- API access via console.typesafe.ai with no waitlist
Use Cases
- Building automated decision-making into software pipelines
- Replacing LLM-based classification or scoring workflows with typed, probabilistic outputs
- Low-latency decision points where code needs a machine-actionable answer rather than text
Why Startups Use It
Jev targets a common pain point for engineering teams: using LLMs for decisions in code. By returning typed, probability-calibrated answers instead of text, it removes the need to parse and validate free-form model output, and its millisecond-scale responses make it viable for latency-sensitive automation paths.
Alternative Options
OpenAI API, Anthropic Claude API
Frequently Asked Questions
What is Jev?
Jev is TypeSafe AI's System One frontier model that converts unstructured state into typed, probabilistic decisions (Choice, Score, and Noul answers) that code can act on.
How fast is Jev?
Jev uses parallel sampling to deliver responses of roughly 70–500ms, which the vendor reports is about 20–200x faster than comparable LLM workflows.
How do I access Jev?
Jev is available to everyone at console.typesafe.ai with no waitlist.
More About Jev
PricingPaid
Listed DateSep 26, 2026
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