choice
Choose from your options
Define 2–20 named options and receive the chosen label, its probability distribution and confidence.
TOGETHER AI / TEV1 4B EXPERIMENTAL
Tev1 4B Experimental. Structured decisions from Together AI.
Route requests, classify inputs and check policies with Together AI’s experimental decision model, fine-tuned from Qwen3.5-4B. Use the same state and typed questions as Jev to receive structured answers with probabilities.
100 credits for new accounts. Web and API use the same balance and rates.
togethercomputer/tev1-4b-experimentalModel context
32,768
tokens · model context; the service’s 32 KiB request cap also applies
Web / API input rate
600
credits / million input tokens
Minimum service charge
1 credit
per successful request · output is free
score
Score on your scale
Define ordered levels and receive a score from zero to the last level’s index, with probabilities and confidence.
noul
Measure a yes/no condition
Ask a narrow question and receive P(true), from 0 to 1. Your application decides which threshold to act on.
The same credit rate as Jev
OpenRouter lists Tev at $0.042 per million input tokens and $0 for output. This service uses 600 credits per million input tokens on web and API, with a 1-credit minimum for each successful request.
| Model | Upstream input · $/1M tokens | Upstream output · $/1M tokens | Credits / 1M input tokens |
|---|---|---|---|
| Jev 1.13 ↗ | $0.042 | $0 | 600 |
| Tev1 4B Experimental ↗ | $0.042 | $0 | 600 |
max(1, ceil(input_tokens × 600 / 1,000,000))
1,000 input tokens cost 1 credit; 5,000 input tokens cost 3 credits, on both web and API. We reserve a budget first, settle actual usage on success, and refund failed calls.
Model pages, endpoint metadata and live Decisions requests checked on October 1, 2026. The live endpoint accepts up to 20 Choice options, although the model description says 24. Provider prices and limits may change.
Try Tev in the Jev workbench
Choice, Score and Noul use the general decision editor. This page starts with Tev and saves its own browser draft. Choice questions accept 2–20 options.
What do you want to decide?
Choose a task to load its input and rules. Loading examples uses no credits.
Tev1 4B Experimental supports Choice (2–20 options), Score and Noul. Context: 32,768 tokens. Web and API use Jev’s credit rate; output is free.
Maximum credit budget: 1 credits
We reserve this budget before the model runs, then charge actual usage and return the difference. Failed calls are refunded.
New account? Receive 100 credits once. Short requests typically use 1 credit; longer inputs can use more.
100 welcome credits · one balance for web & API
Draft saved in this browser · Your draft will be restored after sign-in.
ILLUSTRATIVE EXAMPLE · NO CREDITS USED
“I was charged twice this morning. Please refund the duplicate payment today.”
One input → structured decisions
Choice
Billing
Route to the billing queue
Yes / no
96%
Probability of an urgent request
Score
2.8 / 3
Urgency on a 0–3 scale
Static illustration of the output format. Values are not a live model response or a measure of accuracy.
Test the same cases against two rule sets
Capture A, change the model or questions in the workbench, then capture B. Both versions use identical states.
Capture A from the current workbench model and rules. Change the model or questions, then capture B. Import up to 25 labeled cases and compare both versions. The dataset state replaces each captured state.
This simulates a policy, not accuracy. Noul uses max(P(yes), P(no)); Choice and Score use your selected signal. Validate thresholds on labeled cases.
Maximum credit budget: — credits
Total budget across both versions and all cases. Each request reserves its own allowance, then settles actual usage and refunds the remainder. Stopping preserves charges for completed requests.
New account? Receive 100 credits once. Short requests typically use 1 credit; longer inputs can use more.
Each successful comparison request uses credits. Review the total budget before starting. Requests run sequentially; stopping keeps charges for completed requests. Export includes rules, cases, results and errors. Closing this page stops the comparison.
Web runs and saved configurations are private to your account. API history stores usage only.Usage ↗
Use the decision API you already know
Send model, state and questions to /v1/systemone with a Jev AI Model API key. Set model to togethercomputer/tev1-4b-experimental. Read answers at data.result.answers and the charge at data.creditsUsed.
Accepts text, JSON objects and arrays. Up to 8 questions and 32 KiB per request, within the model’s 32,768-token context. Tev Choice questions accept 2–20 options; Score accepts the service’s 2–10 levels. Web attempts are spaced at least 3 seconds apart.
Live checks passed for Choice, Score and Noul together on text, object and array inputs, and for a Noul question on a Span-shaped conversation object. Tev accepts general decision inputs and belongs in the Jev playground. These checks verify the API contract; evaluate prediction quality on your own labeled cases.
// Server-side JavaScript (Node 20+ or Bun). Set JEV_API_KEY.
const response = await fetch("https://jevaimodel.net/v1/systemone", {
method: "POST",
headers: {
"Authorization": `Bearer ${process.env.JEV_API_KEY}`,
"Content-Type": "application/json",
},
body: JSON.stringify({
"model": "togethercomputer/tev1-4b-experimental",
"state": "I was charged twice for order A-4471. Please refund the duplicate payment.",
"questions": {
"route": {
"type": "choice",
"instructions": "Which team should handle this ticket? Use other when no option fits.",
"criteria": {
"billing": "Payments, charges and refunds",
"technical": "Bugs and product errors",
"account": "Login and account access",
"other": "None of these teams"
}
}
}
}),
});
const body = await response.json();
if (!response.ok || body.code !== 0) throw new Error(body.message);
console.log(body.data.result.answers);
console.log(body.data.creditsUsed);