Does GLM 5.1 support zero data retention?

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

Where is GLM 5.1 hosted?

GLM 5.1 runs on US hosting routes through the Opper gateway.

Is GLM 5.1 trained on prompts and outputs?

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

Is a GDPR DPA available for GLM 5.1?

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

GLM 5.1

by Z.ai

GLM 5.1 MoE for complex systems engineering and agentic tasks on Fireworks

Open in playground Try in chat Compare

Key info

Input

Output

Features

Context window

200K

Max output

128K

Input price

$1.40 /1M

Output price

$4.40 /1M

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

Available routes

GLM 5.1 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
Fireworks	US	Enterprise	No	$1.40	$4.40

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

Data handling per route

Each route hosting GLM 5.1 has its own privacy posture, residency, and GDPR terms. Postures are maintained by Opper with a last-verification timestamp.

Fireworks — 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: None
Third-party access: None disclosed
GDPR DPA: DPA available
Transfer mechanism: SCCs

Get started

Call GLM 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 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.click/v3/compat",
6});
7
8const completion = await client.chat.completions.create({
9  model: "fireworks/glm-5p1",
10  messages: [{ role: "user", content: "Hello" }],
11});
12console.log(completion.choices[0].message.content);