Does GPT-5.4 Mini support zero data retention?

Not self-serve on Pay-as-you-go. Zero data retention for GPT-5.4 Mini is available on request via Opper Enterprise — contact hello@opper.ai.

Where is GPT-5.4 Mini hosted?

GPT-5.4 Mini runs on both EU and US hosting routes through the Opper gateway. Pick the route that matches your residency requirement.

Is GPT-5.4 Mini trained on prompts and outputs?

No. Every hosting route for GPT-5.4 Mini is configured so customer prompts and outputs are not used to train models by default.

Is a GDPR DPA available for GPT-5.4 Mini?

Yes. A GDPR Data Processing Agreement is available on at least one route serving GPT-5.4 Mini. Contact hello@opper.ai to receive it.

GPT-5.4 Mini

by OpenAI

GPT-5.4 Mini significantly improves over GPT-5 Mini across coding, reasoning, multimodal understanding, and tool use, while running more than 2x faster. With a 400k token context window and vision support, it approaches the performance of the larger GPT-5.4 on evaluations including SWE-Bench Pro and OSWorld-Verified. Built for high-volume workloads where latency shapes the user experience, GPT-5.4 Mini works well as the primary model for responsive coding assistants, quick-turnaround subagents, computer-use systems that interpret screenshots, and multimodal applications reasoning over images. The model supports structured output, function calling, and tool use for integration with complex workflows. OpenAI positions it as its strongest mini model for coding, computer use, and agentic tasks that demand both speed and capability.

Open in playground Try in chat Compare

Key info

Input

Output

Features

Context window

400K

Max output

128K

Input price

$0.75 /1M

Output price

$4.50 /1M

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

Available routes

GPT-5.4 Mini runs on 2 different routes 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
Azure	EU	Enterprise	No	$0.75	$4.50
OpenAI	US	Enterprise	No	$0.75	$4.50

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

Data handling per route

Each route hosting GPT-5.4 Mini has its own privacy posture, residency, and GDPR terms. Postures are maintained by Opper with a last-verification timestamp.

Azure — Sweden🇸🇪

Zero data retention is available via Opper Enterprise contract. No training on customer data. EU; 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: Not applicable — data stays in EU

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#32 of 531 LLMs

TierStrong

Output speed186 tok/s

First token6.06s

Intelligence Index40.0

Coding Index51.5

Reasoning & knowledge

GPQA Diamond

88%

Humanity's Last Exam

27%

Long-context reasoning

69%

Coding

SciCode

50%

Agentic & tool use

Terminal-Bench Hard

52%

τ²-Bench Telecom

83%

Math & instruction following

IFBench

73%

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

Get started

Call GPT-5.4 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/gpt-5.4-mini",
10  messages: [{ role: "user", content: "Hello" }],
11});
12console.log(completion.choices[0].message.content);