Does GPT-5.1 support zero data retention?

Not self-serve on Pay-as-you-go. Zero data retention for GPT-5.1 is available on request via Opper Enterprise — contact hello@opper.ai.

Where is GPT-5.1 hosted?

GPT-5.1 runs on both EU and US hosting routes through the Opper gateway. Pick the route that matches your residency requirement.

Is GPT-5.1 trained on prompts and outputs?

No. Every hosting route for GPT-5.1 is configured so customer prompts and outputs are not used to train models by default.

Is a GDPR DPA available for GPT-5.1?

Yes. A GDPR Data Processing Agreement is available on at least one route serving GPT-5.1. Contact hello@opper.ai to receive it.

GPT-5.1

by OpenAI

GPT-5.1 is a reasoning model in OpenAI's GPT-5 family, pairing advanced reasoning with vision and a 272,000-token context window. It targets complex reasoning tasks, coding, and professional work where the model can plan, weigh alternatives, and solve multi-step problems. It supports function calling, structured outputs, and vision input, which makes it a fit for agentic workflows, code analysis, and knowledge-intensive tasks across domains.

Open in playground Try in chat Compare

Key info

Input

Output

Features

Context window

272K

Max output

128K

Input price

$1.25 /1M

Output price

$10.00 /1M

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

Available routes

GPT-5.1 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	$1.25	$10.00
OpenAI	US	Enterprise	No	$1.25	$10.00

Uptime and availability

GPT-5.1 runs on 2 independently monitored routes through the Opper gateway. A direct integration leaves you on one of them, the gateway serves whichever is healthy.

99.98%effective uptime, last 30 days

Averaged across these routes on their own, a single provider reached 98.45% over the same window.

Daily status through the gateway, which serves each request from whichever route is healthy.

2 monitored providers serve GPT-5.1.

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 GPT-5.1 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#98 of 596 LLMs

TierStrong

Output speed0 tok/s

First token0.00s

Intelligence Index37.5

Coding Index49.4

Math Index94.0

Reasoning & knowledge

MMLU-Pro

87%

GPQA Diamond

87%

Humanity's Last Exam

28%

Long-context reasoning

77%

Coding

LiveCodeBench

87%

SciCode

43%

Agentic & tool use

Terminal-Bench Hard

45%

τ²-Bench Telecom

82%

Math & instruction following

AIME 2025

94%

IFBench

73%

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

Get started

Call GPT-5.1 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 a coding agent like Claude Code, Cursor or Codex 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-5.1",
10  messages: [{ role: "user", content: "Hello" }],
11});
12console.log(completion.choices[0].message.content);