Does ERNIE 4.5 21B A3B support zero data retention?

Not self-serve on Pay-as-you-go. Zero data retention for ERNIE 4.5 21B A3B is available on request via Opper Enterprise — contact hello@opper.ai.

Where is ERNIE 4.5 21B A3B hosted?

ERNIE 4.5 21B A3B runs on US hosting routes through the Opper gateway.

Is ERNIE 4.5 21B A3B trained on prompts and outputs?

No. Every hosting route for ERNIE 4.5 21B A3B is configured so customer prompts and outputs are not used to train models by default.

Is a GDPR DPA available for ERNIE 4.5 21B A3B?

Yes. A GDPR Data Processing Agreement is available on at least one route serving ERNIE 4.5 21B A3B. Contact hello@opper.ai to receive it.

ERNIE 4.5 21B A3B

by Baidu

ERNIE 4.5 21B A3B is Baidu's efficient text-only mixture-of-experts model, activating just 3 billion parameters per token despite 21 billion total parameters. Built on a heterogeneous MoE architecture with modality-isolated routing, it handles general-purpose English and Chinese understanding, generation, and instruction following with native support for function calling. Designed for both research and production use, the model targets solid reasoning and comprehension across STEM and knowledge tasks. It supports a 120K token context for processing lengthy documents and ships as open weights under the Apache 2.0 license. Quantized variants (4-bit, 2-bit) are available for more efficient deployment.

Open in playground Try in chat Compare

Key info

Input

Output

Features

Context window

120K

Max output

Input price

$0.07 /1M

Output price

$0.28 /1M

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

Available routes

ERNIE 4.5 21B A3B 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
Novita	US	Enterprise	No	$0.07	$0.28

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

Data handling per route

Each route hosting ERNIE 4.5 21B A3B has its own privacy posture, residency, and GDPR terms. Postures are maintained by Opper with a last-verification timestamp.

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

Get started

Call ERNIE 4.5 21B A3B 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: "novita/baidu/ernie-4.5-21B-a3b",
10  messages: [{ role: "user", content: "Hello" }],
11});
12console.log(completion.choices[0].message.content);