Does Grok 4.20 0309 Reasoning support zero data retention?

Not self-serve on Pay-as-you-go. Zero data retention for Grok 4.20 0309 Reasoning is available on request via Opper Enterprise — contact hello@opper.click.

Where is Grok 4.20 0309 Reasoning hosted?

Grok 4.20 0309 Reasoning runs on US hosting routes through the Opper gateway.

Is Grok 4.20 0309 Reasoning trained on prompts and outputs?

No. Every hosting route for Grok 4.20 0309 Reasoning is configured so customer prompts and outputs are not used to train models by default.

Is a GDPR DPA available for Grok 4.20 0309 Reasoning?

Yes. A GDPR Data Processing Agreement is available on at least one route serving Grok 4.20 0309 Reasoning. Contact hello@opper.click to receive it.

Grok 4.20 0309 Reasoning

by xAI

Grok 4.20 0309 Reasoning enables explicit chain-of-thought within xAI's Grok 4.20 multi-agent architecture, where multiple specialized agents collaborate on a shared backbone and synthesize a final answer. Released in March 2026, this variant favors accuracy on complex logic, math, and multi-step problems by reasoning before responding. xAI positions the model around strong instruction following and a low hallucination rate, with the multi-agent design intended to cut factual errors through parallel exploration and cross-checking. Visible reasoning steps support debugging and transparency in agentic systems. It accepts text and image input, supports native tool use and structured outputs, and integrates real-time X data across a 1 million token context window, targeting applications where accuracy and explainability matter more than raw speed.

Open in playground Try in chat Compare

Key info

Input

Output

Features

Context window

—

Max output

—

Input price

$1.25 /1M

Output price

$2.50 /1M

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

Available routes

Grok 4.20 0309 Reasoning 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
xAI	US	Enterprise	No	$1.25	$2.50

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

Data handling per route

Each route hosting Grok 4.20 0309 Reasoning has its own privacy posture, residency, and GDPR terms. Postures are maintained by Opper with a last-verification timestamp.

xAI — 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

Get started

Call Grok 4.20 0309 Reasoning 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: "xai/grok-4.20-0309-reasoning",
10  messages: [{ role: "user", content: "Hello" }],
11});
12console.log(completion.choices[0].message.content);