When was Microsoft Decision 1 released?

Microsoft released Microsoft Decision 1 on 9 Oct 2026. It is available through the Opper gateway.

Does Microsoft Decision 1 support zero data retention?

With abuse monitoring, yes. On Azure through the Opper gateway, prompts and outputs are not used for training and are kept only for abuse monitoring.

Where is Microsoft Decision 1 hosted?

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

Is Microsoft Decision 1 trained on prompts and outputs?

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

Is a GDPR DPA available for Microsoft Decision 1?

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

Microsoft Decision 1

by Microsoft

Released 666 days after Phi-4 · Announcement · All Microsoft releases

Microsoft Decision 1 is Microsoft's decision-scoring model, post-trained from Alibaba's Qwen3.5-9B. Given a situation and a question with predefined answer options, it returns a calibrated probability for each option in a single pass instead of generating text. It supports yes/no, multiple-choice, rating and rubric-based questions over text inputs of up to 32K tokens. Use it to classify and route requests, prioritize workflow items, check proposed agent actions, or grade AI responses against criteria and evidence you provide. Its probabilities let an application set thresholds for automatic action and escalate uncertain cases. Include an explicit option such as "cannot tell" when the evidence may be insufficient. The model does not generate explanations, answer open-ended questions or look beyond the supplied input for missing knowledge. It is text-only, and Microsoft does not design or evaluate it as the sole automated decision-maker for consequential decisions about people.

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

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Key info

Input

Output

Features

Context window

33K

Max output

—

Input price

$0.04 /1M

Output price

$0 /1M

Released

9 Oct 2026

EU residency available
Zero data retention with abuse monitoring
No training by default
GDPR DPA available

Available routes

Microsoft Decision 1 runs on 2 different routes 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 Azure. See every model hosted in the EU.

Provider	Region	Zero data retention	Training	Input	Output	Cache read
Azure	EU		No	$0.04	$0	Input price
Azure	Multi		No	$0.04	$0	Input price

Live routes and prices as JSON: api.opper.ai/v3/models?q=azure%3Aeu%2Fmicrosoft-decision-1

Uptime and availability

Microsoft Decision 1 runs on a single route through the Opper gateway today, so its availability is that provider's availability.

99.27%route uptime, last 30 days

Single route, no failover target within this model.

Name a second model in the same request and the gateway tries it on retriable errors, so a busy hour never has to reach your users. Set up a fallback chain.

Measured over the last 30 days from each provider's official status feed via StatusGator. Refreshed hourly. See uptime for every provider Opper monitors.

Data handling per route

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

Azure — EU🇪🇺

Zero data retention with abuse monitoring: nothing is logged or used for training; content flagged by abuse monitoring is held for review. No training on customer data. EU; DPA available.

Zero data retention: With abuse monitoring, flagged content held.
Training: No training on customer data.
Logging: None
Abuse monitoring: On by default, holds flagged content, stored in Sweden, a person can view samples
GDPR DPA: DPA available
Transfer mechanism: Not applicable — data stays in EU

Azure — Multi-region

Zero data retention with abuse monitoring: nothing is logged or used for training; content flagged by abuse monitoring is held for review. No training on customer data. GLOBAL; unknown; DPA available.

Zero data retention: With abuse monitoring, flagged content held.
Training: No training on customer data.
Logging: None
Abuse monitoring: On by default, holds flagged content, stored in Sweden, a person can view samples
GDPR DPA: DPA available
Transfer mechanism: unknown

Best for

The model directory pages that list Microsoft Decision 1.

Listed inDecision models

Benchmarks

Microsoft Decision 1 played 100 games of Pac-Man against the four arcade ghosts.

JevMan: the Pac-Man benchmark for AI decision models

Watch Microsoft Decision 1's JevMan game

Rank in our runs10 of 15

Mean score2,390

Best game4,420

Games100

See the JevMan benchmark →Compare all decision modelsScores from Opper's own runs. Updated Oct 24, 2026.

Get started

Call Microsoft Decision 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.

Microsoft Decision 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": "azure:eu/microsoft-decision-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  }'