UPSTAGE / SYSTEM ONE
Upstage's structured decision model, served on Solar Mini 4. Send a state and typed questions; receive a choice, score, or yes/no probability without generated prose.
New accounts get 100 credits. The playground and API share one balance.
Context window
524,288
tokens · provider-listed maximum
OpenRouter input price
$0.05 / 1M
per million input tokens
OpenRouter output price
$0 / 1M
output tokens are free upstream
This site's input rate
720
credits per million input tokens
/v1/systemone
OpenRouter lists Solar Decide as using the same /v1/systemone schema as Jev. The existing Jev playground sends the model, state, and typed questions through the same endpoint and validates the same structured answer fields.
TEXT → DECISION
Choose from named options, score against an ordered scale, or estimate the probability of a yes/no condition. The response includes model probabilities for your application to interpret.
Solar Decide is text-only. The playground accepts text or JSON state, up to 8 questions and 32 KiB per request; its request-size limit is below the provider-listed 524,288-token context window.
This page reuses the Jev workbench with Solar Decide preselected. Start with a recipe or replace the state and questions. Its browser draft is saved separately from the main playground and Kev page.
What do you want to decide?
Choose a task to load its input and rules. Loading examples uses no 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.
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.”
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.
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.
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.
Send model, state, and questions to Jev AI Model's /v1/systemone endpoint with an API key created here. Set model to upstage/solar-decide; answers are in data.result.answers.
This site's rate is max(1, ceil(input_tokens × 720 / 1,000,000)) credits. Output tokens are not charged. This credit schedule is separate from OpenRouter's provider price.
// 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": "upstage/solar-decide",
"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);