Does GLM-5.2 Fast support zero data retention?

Yes. GLM-5.2 Fast is available with zero data retention by default on Fireworks through the Opper gateway.

Where is GLM-5.2 Fast hosted?

GLM-5.2 Fast is available on multi-region hosting through the Opper gateway. See the per-route table for details.

Is GLM-5.2 Fast trained on prompts and outputs?

No. Every hosting route for GLM-5.2 Fast is configured so customer prompts and outputs are not used to train models by default.

Is a GDPR DPA available for GLM-5.2 Fast?

Yes. A GDPR Data Processing Agreement is available on at least one route serving GLM-5.2 Fast. Contact hello@opper.ai to receive it.

GLM-5.2 Fast

by Z.ai

GLM-5.2 Fast runs Z.ai's GLM-5.2 on a throughput-optimized path that delivers two to three times standard generation speed at the same quality bar. The underlying model, released in June 2026 under an MIT license, is a 744B-parameter mixture-of-experts design that debuted as the top-ranked open-weight model on the Artificial Analysis Intelligence Index. Agentic coding and terminal work are where it shines, with strong showings on SWE-bench Pro and Terminal-Bench, and its context window stretches past one million tokens with output up to 131K. The Fast tier keeps those strengths while cutting time to completion, a good match for interactive coding agents, large-codebase analysis, and reasoning-heavy pipelines where latency matters.

Open in playground Try in chat Compare

Key info

Input

Output

Features

Context window

Max output

131K

Input price

$2.10 /1M

Output price

$6.60 /1M

Zero data retention on pay-as-you-go
No training by default
GDPR DPA available

Available routes

GLM-5.2 Fast 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	Multi	Zero data retention	No	$2.10	$6.60

Uptime and availability

GLM-5.2 Fast runs on a single route through the Opper gateway today, so its availability is that provider's availability.

100%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 GLM-5.2 Fast has its own privacy posture, residency, and GDPR terms. Postures are maintained by Opper with a last-verification timestamp.

Fireworks — Multi-region

Zero data retention is on by default on Pay-as-you-go — no action required. No training on customer data. GLOBAL; SCCs; DPA available.

Zero data retention: On by default on Pay-as-you-go. Derived from the logging and moderation facts.
Training: No training on customer data.
Logging: None
Moderation: Not established
Caching: Not established
Subprocessor access: Subprocessors may read content
GDPR DPA: DPA available
Transfer mechanism: SCCs

Get started

Call GLM-5.2 Fast 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: "fireworks/glm-5p2-fast",
10  messages: [{ role: "user", content: "Hello" }],
11});
12console.log(completion.choices[0].message.content);