Jev alternative, hosted in the EU.
The Decision API answers the same /v1/systemone requests your clients already send, on GPUs in EU regions, and retains no state by default.
TYPESAFE_BASE_URL=https://api.hostjev.com- EU GPU regions
- 3
- Prefill per request
- 1 pass
- Choice options
- 255
- State retained by default
- None
One ticket, three typed answers
One state, three questions, one prefill pass. The figures are illustrative.
TYPESAFE_BASE_URL
your-current-endpointhttps://api.hostjev.comUse a hostjev key; your code stays the same.
Why teams switch
Three claims, in the order legal and engineering ask about them.
The data path stays in the EU
GPU inference runs only in EU regions, and the DPA names every sub-processor. No state is retained by default, so there is nothing to ask for later.
EU-RO-1 · EU-SE-1 · EUR-IS-2
Your client does not change
Same paths, same request body, same response fields. TypeSafe SDKs and the clients you already wrote keep working once the base URL points here and requests carry a hostjev key.
POST /v1/systemone · GET /v1/models · GET /v1/limits
Confidence you can audit
Temperature scaling is fitted per primitive, and figures are published with the model version they belong to. No figures published yet.
temperature scaling · per primitive · per model version
How it works
No text is generated. One prefill pass, then the token probabilities are read straight off the model.
- 1
Send state and questions
One POST carries the state and a map of questions. State can be a string, a JSON object or an array of strings.
- 2
One prefill pass reads the logits
The state is prefilled once, and each question is answered from the model's own token probabilities.
- 3
Typed answers come back
Every answer is a Choice, a Score or a Noul with its probabilities, next to the model version that answered.
{
"state": {
"ticket": {
"subject": "Duplicate charge",
"messages": ["I was billed twice for September. Please refund one."]
}
},
"questions": {
"department": {
"type": "choice",
"instructions": "Which team should handle this",
"criteria": {
"billing": "Charges, refunds, invoices",
"technical": "Bugs, outages, integrations",
"other": "Nothing fits"
}
},
"frustration": {
"type": "score",
"instructions": "How frustrated the customer appears",
"criteria": ["Calm", "Frustrated but civil", "Very angry"]
},
"refund_requested": {
"type": "noul",
"instructions": "The customer explicitly asks for a refund"
}
}
}{
"model": "decision-35b-2026-09",
"mode": "packed",
"usage": { "input_tokens": 187 },
"answers": {
"department": {
"choice": "billing",
"probabilities": { "billing": 0.91, "technical": 0.03, "other": 0.06 },
"confidence": 0.91
},
"frustration": {
"score": 1.32,
"probabilities": [0.12, 0.44, 0.44],
"confidence": 0.68
},
"refund_requested": {
"noul": 0.97
}
}
}The packed mode is the default: every question shares one prefilled state. In separate mode each question is answered alone, and roughly 6–9% of answers differ.
The questions legal will ask
- Where does our data go?
- GPU inference runs only in EU regions: EU-RO-1, EU-SE-1 and EUR-IS-2.
- What is retained?
- No state, by default. Counts, latency and token totals are kept so that usage can be billed.
- Who are the sub-processors?
- RunPod Secure Cloud, named in the DPA. The company is US-headquartered and the data centres in use are in the EU. A strict-EU provider is being evaluated.
- What changes in our code?
- Nothing in the code itself. Point TYPESAFE_BASE_URL at api.hostjev.com, use a hostjev key, and the existing client keeps working.
The details
The API surface, the model and the data rules, in one place.
API surface
- Wire format
- POST /v1/systemoneGET /v1/modelsGET /v1/limits
- Unchanged from the reference API.
- Primitives
- ChoiceScoreNoul
- Choice (up to 255 options) and Score (2–10 levels) return probabilities and confidence; Noul returns one calibrated probability.
- Modes
- packeddefaultseparate
- Answers in separate mode may differ from packed by roughly 6–9%.
Model
- Model
- Qwen/Qwen3.6-35B-A3B
- Licence
- Apache-2.0
- Ids
- decision-35bdecision-27bdecision-4bdecision-latest
- Stock weights. Every response carries the versioned id that answered.
Data and limits
- Regions
- EU-RO-1EU-SE-1EUR-IS-2
- Sub-processors
- RunPod Secure Cloud
- US-headquartered, EU data centres, named in the DPA.
- Retention
- None by default
- Counts, latency and token totals are kept for billing.
- Limits
- 64k tokens state + questions32k state + longest question255 Choice optionstext only
Pricing
Billed per input token. Output is free: answers are read from the model's probabilities, not written as text. Figures may change before general availability.
Dedicated capacity? Talk to us
Questions about billingPoint your base URL at the EU, swap in a hostjev key, and leave your code as it is.
Join the waitlist