Does O3 Mini support zero data retention?

Not self-serve on Pay-as-you-go. Zero data retention for O3 Mini is available on request via Opper Enterprise — contact hello@opper.ai.

Where is O3 Mini hosted?

O3 Mini runs on US hosting routes through the Opper gateway.

Is O3 Mini trained on prompts and outputs?

No. Every hosting route for O3 Mini is configured so customer prompts and outputs are not used to train models by default.

Is a GDPR DPA available for O3 Mini?

Yes. A GDPR Data Processing Agreement is available on at least one route serving O3 Mini. Contact hello@opper.ai to receive it.

O3 Mini

by OpenAI

O3 Mini is OpenAI's lighter-weight reasoning model, delivering strong reasoning at lower cost than full O3. Released January 31, 2025, it is optimized for science, mathematics, and coding challenges. The model exposes adjustable reasoning effort across three levels, low, medium, and high, so developers can tune how much computation each request spends: low for latency-sensitive tasks, medium for balanced performance, and high for harder problems that need deeper reasoning. O3 Mini supports structured outputs, function calling, and streaming, with a 200,000 token context window and up to 100,000 output tokens. It is text-only without vision, positioning it as an efficient option for reasoning workloads that do not need image input.

Open in playground Try in chat Compare

Key info

Input

Output

Features

Context window

200K

Max output

100K

Input price

$1.10 /1M

Output price

$4.40 /1M

US residency available
Zero data retention via Enterprise
No training by default
GDPR DPA available

Available routes

O3 Mini runs on 1 route through the Opper gateway. Compare residency, ZDR, and training posture at a glance — full data-handling detail per route below.

Provider	Region	Zero data retention	Training	Input	Output
OpenAI	US	Enterprise	No	$1.10	$4.40

Training posture across routes: No training on prompts by default.

Data handling per route

Each route hosting O3 Mini has its own privacy posture, residency, and GDPR terms. Postures are maintained by Opper with a last-verification timestamp.

OpenAI — United States🇺🇸

Zero data retention is available via Opper Enterprise contract. No training on customer data. US; SCCs; DPA available.

Zero data retention: Available via Opper Enterprise contract.
Training: No training on customer data.
Logging: Abuse monitoring (30-day retention)
Third-party access: None disclosed
GDPR DPA: DPA available
Transfer mechanism: SCCs

Benchmarks

Independent benchmark scores — composite indices for reasoning, coding, and math, plus individual eval scores where available.

Global rank#203 of 531 LLMs

TierEfficient

Output speed176 tok/s

First token6.83s

Intelligence Index19.0

Coding Index17.9

Reasoning & knowledge

MMLU-Pro

79%

GPQA Diamond

75%

Humanity's Last Exam

Coding

LiveCodeBench

72%

SciCode

40%

Agentic & tool use

Terminal-Bench Hard

τ²-Bench Telecom

29%

See full leaderboard →Benchmarks via Artificial Analysis · View on AA

Get started

Call O3 Mini through the Opper gateway with one API key. Let your coding agent set it up, or call it directly — Opper is drop-in compatible with the OpenAI, Anthropic, and Google AI SDKs.

Set it up with your agent

Copy this and paste it into your coding agent — Claude Code, Cursor, Codex, and more — and it'll wire up Opper for you.

Or call it directly

1import OpenAI from "openai";
2
3const client = new OpenAI({
4  apiKey: process.env.OPPER_API_KEY,
5  baseURL: "https://api.opper.ai/v3/compat",
6});
7
8const completion = await client.chat.completions.create({
9  model: "openai/o3-mini",
10  messages: [{ role: "user", content: "Hello" }],
11});
12console.log(completion.choices[0].message.content);