Does Grok 4.20 Reasoning support zero data retention?

With abuse monitoring, yes. On Google Cloud through the Opper gateway, prompts and outputs are not used for training and are kept only for abuse monitoring.

Where is Grok 4.20 Reasoning hosted?

See the per-route table for Grok 4.20 Reasoning hosting locations and residency details.

Is Grok 4.20 Reasoning trained on prompts and outputs?

No. Every hosting route for Grok 4.20 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 Reasoning?

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

Grok 4.20 Reasoning

by xAI

Grok 4.20 Reasoning is the reasoning-enabled production model of xAI's March 2026 Grok 4.20 generation, generating explicit chain-of-thought before responding to improve accuracy on complex logic, math, and multi-step problems. It spans a 2 million token context window, making it strong for long-horizon agentic workflows and research. The model integrates real-time X data when context is needed, supports native tool calling for external API invocation, and handles image input alongside text. Visible reasoning steps support transparency and debugging across multi-turn conversations. Released in March 2026, Grok 4.20 Reasoning targets accuracy-critical applications such as analysis, complex code generation, and structured reasoning where you need both explanations and the long context that extended tasks demand.

Call Grok 4.20 Reasoning on Opper with the OpenAI SDK. Sign up without a credit card. Get started

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Key info

Input

Output

Features

Context window

Max output

30K

Input price

$1.25 /1M$0.20 cache read

Output price

$2.50 /1M

Zero data retention with abuse monitoring
No training by default
GDPR DPA available

Available routes

Grok 4.20 Reasoning runs on 1 route through the Opper gateway. Compare residency, zero data retention and training posture at a glance, with full data-handling detail per route below.

Provider	Region	Zero data retention	Training	Input	Output	Cache read
Google Cloud	Multi		No	$1.25	$2.50	$0.20

Live routes and prices as JSON: api.opper.ai/v3/models?q=vertexai%2Fgrok-4.20-reasoning

Uptime and availability

Grok 4.20 Reasoning runs on a single route through the Opper gateway today, so its availability is that provider's availability.

99.18%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 Grok 4.20 Reasoning has its own privacy posture, residency, and GDPR terms. Postures are maintained by Opper with a last-verification timestamp.

Google Cloud — Multi-region

Zero data retention with abuse monitoring: prompts and outputs are kept for abuse monitoring only, for a window the provider does not state, and are not used for training. No training on customer data. GLOBAL; SCCs; DPA available.

Zero data retention: With abuse monitoring, window not stated.
Training: No training on customer data.
Logging: Abuse monitoring
Abuse monitoring: On by default, holds flagged content, 90 days, a person can view samples
GDPR DPA: DPA available
Transfer mechanism: SCCs

Get started

Call Grok 4.20 Reasoning through the Opper gateway with one API key. Opper is drop-in compatible with the OpenAI, Anthropic and Google AI SDKs.

Grok 4.20 Reasoning is a premium model on Opper. Sign up needs no credit card: you get an API key straight away and the free models work in the playground and the API. Add a card to use premium models, pay-as-you-go with no minimum.

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