Does Eevo 1 support zero data retention?

Yes. Eevo 1 is available with zero data retention on Upright through the Opper gateway.

Where is Eevo 1 hosted?

Eevo 1 runs on EU hosting routes through the Opper gateway, with contractually enforced residency on supported providers.

Is Eevo 1 trained on prompts and outputs?

No. Every hosting route for Eevo 1 is configured so customer prompts and outputs are not used to train models by default.

Is a GDPR DPA available for Eevo 1?

Yes. A GDPR Data Processing Agreement is available on at least one route serving Eevo 1. Contact hello@opper.ai to receive it.

Eevo 1

by Upright

Eevo 1 is a decision model from Upright, trained to judge options by their consequences: who is better or worse off, by how much, and how likely that is. It generates no text. You send a state (text or JSON) and named questions, and it returns typed answers: the probability that a statement is true, a choice among options you define, or a position on your own rubric, each with a full probability distribution. It speaks the same request and response format as TypeSafe's System One API, so code written for Jev can switch models by changing the model name, and several questions can be asked about one state in a single request. Eevo knows nothing beyond the request: it does not look things up, so its answers are information for a decision rather than the decision itself. The state and questions are read up to 8,192 tokens; anything past that is cut from the end without an error, so put the facts that decide the case first.

Call Eevo 1 on Opper through the System One evaluation API. Sign up without a credit card. Get started

Get your API key Evaluate via API Compare

Key info

Input

Output

Features

Context window

Max output

—

Input price

$2.50 /1M

Output price

$0 /1M

EU residency available
Zero data retention on pay-as-you-go
No training by default
GDPR DPA available

Available routes

Eevo 1 runs on 1 route through the Opper gateway. Compare residency, zero data retention and training posture at a glance, with full data-handling detail per route below. In the EU it is served by Upright. See every model hosted in the EU.

Provider	Region	Zero data retention	Training	Input	Output	Cache read
Upright	EU		No	$2.50	$0	Input price

Live routes and prices as JSON: api.opper.ai/v3/models?q=eevo%2Feevo-1

Data handling per route

Each route hosting Eevo 1 has its own privacy posture, residency, and GDPR terms. Postures are maintained by Opper with a last-verification timestamp.

Upright — EU🇪🇺

Zero data retention: nothing is logged or used for training. No training on customer data. EU; dpf sccs; DPA available.

Zero data retention: Yes. Nothing is logged or used for training.
Training: No training on customer data.
Logging: None
GDPR DPA: DPA available
Transfer mechanism: dpf sccs

Get started

Call Eevo 1 through the Opper gateway with one API key. Evaluate state against typed questions using TypeSafe’s System One API for yes/no decisions, classification, and rubric scoring.

See the Opper evaluation guide and the TypeSafe API reference for question types and response formats. Compare every decision model, on one API.

Eevo 1 is a premium model on Opper. Sign up needs no credit card: you get an API key straight away and the free models work in the playground and the API. Add a card to use premium models, pay-as-you-go with no minimum.

Set it up with your agent

Copy this and paste it into a coding agent like Claude Code, Cursor or Codex and it'll wire up Opper for you.

Or call it directly

1curl https://api.opper.ai/v3/compat/v1/systemone \
2  -H "Authorization: Bearer $OPPER_API_KEY" \
3  -H "Content-Type: application/json" \
4  -d '{
5    "model": "eevo/eevo-1",
6    "state": "The customer cannot sign in and needs help immediately.",
7    "questions": {
8      "is_urgent": {
9        "type": "noul",
10        "instructions": "Does the customer need urgent help?"
11      }
12    }
13  }'