TypeSafe Jev · on Apigator
Jev is a decision model. Give it any text or JSON plus typed questions; get back structured answers with calibrated probabilities in ~100 ms. No prompts to babysit, no output to parse.
Every new Apigator account gets it automatically. Already have an account? Sign in through this page to claim it once.
Every answer comes back as JSON keyed by the questions you named — a choice, a score, or a yes/no probability. Your code reads it directly.
Each answer carries a probability and a confidence. Act automatically when it is sure, send the rest to a human or a bigger model.
Fast enough to sit inline in a request path: routing, moderation, filtering, ranking.
Ask department, urgency and sentiment about the same text in a single request — one round trip, one bill.
$0.042 per 1M input tokens, output free. Classify millions of items for the price of a coffee.
No new account or contract. Your existing Apigator key and balance work for Jev and every other model.
"type": "choice" Choice
Pick one option from a set you define (up to 255). Returns the pick plus a probability for every option.
"type": "score" Score
Rate against ordered levels you describe (2–10). Returns a probability-weighted score that can land between levels.
"type": "noul" Noul (yes/no)
Returns the probability that a yes/no statement is true, from 0 to 1.
Chat models write. Jev decides. Use each for what it is good at.
| LLM chat (GPT, Claude, …) | Jev | |
|---|---|---|
| Output | Free-form text | Typed JSON answers, one per question |
| Parsing | JSON mode, regex, retries when it drifts | None — the shape is guaranteed |
| How sure is it? | No reliable signal | Calibrated probability + confidence on every answer |
| Latency | Seconds | ~100 ms |
| Price | Pay for input and output tokens | $0.042 / 1M input tokens, output free |
| Best for | Writing, reasoning, conversation | Classify, route, score, filter, guardrails |
💡 Common pattern: Jev screens and routes every request, and only the ones that need writing go to an LLM.
One request asks three questions about the same message.
curl https://api.apigator.ai/typesafe/v1/systemone \
-H "Authorization: Bearer $APIGATOR_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "jev-latest",
"state": "Help! My payouts have been failing for 3 days.",
"questions": {
"department": {
"type": "choice",
"instructions": "Which team should handle this?",
"criteria": {
"billing": "Payments, invoicing, refunds",
"technical": "Bugs, outages, integrations",
"sales": "Pricing, upgrades, new accounts"
}
},
"is_urgent": {
"type": "noul",
"instructions": "Does this convey urgency?"
},
"frustration": {
"type": "score",
"instructions": "How frustrated is the customer?",
"criteria": ["Calm", "Frustrated", "Very angry"]
}
}
}'{
"model": "jev-1.13.0",
"answers": {
"department": {
"type": "choice",
"choice": "billing",
"probabilities": { "billing": 0.88, "technical": 0.12, "sales": 0.0 },
"confidence": 0.82
},
"is_urgent": { "type": "noul", "noul": 0.95 },
"frustration": {
"type": "score",
"score": 1.04,
"legend": { "0": "Calm", "1": "Frustrated", "2": "Very angry" },
"probabilities": { "0": 0.0, "1": 0.96, "2": 0.04 },
"confidence": 0.94
}
},
"usage": { "input_tokens": 402, "output_tokens": 73 }
}const { answers } = await res.json();
if (answers.is_urgent.noul > 0.8) pageOnCall();
if (answers.department.confidence > 0.7) {
assignTo(answers.department.choice); // "billing"
} else {
sendToHumanTriage();
}$0.042
per 1M input tokens
Output tokens: free
A call like the example above uses 300–400 input tokens (measured), so the free 1M tokens cover roughly 2,500–3,000 calls. After that, Jev draws from your normal Apigator balance — pay as you go, no subscription.
Sign up with the button on this page — 1M Jev tokens are added to your balance automatically.
Copy your API key from the dashboard.
POST to https://api.apigator.ai/typesafe/v1/systemone — or use the official SDK with the two environment variables below.
pip install typesafe-sdk # or: npm install typesafe
export TYPESAFE_BASE_URL=https://api.apigator.ai/typesafe
export TYPESAFE_API_KEY=sk-your-apigator-key