Does Grok 4.1 Fast Non-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 4.1 Fast Non-Reasoning hosted?

See the per-route table for Grok 4.1 Fast Non-Reasoning hosting locations and residency details.

Is Grok 4.1 Fast Non-Reasoning trained on prompts and outputs?

No. Every hosting route for Grok 4.1 Fast Non-Reasoning is configured so customer prompts and outputs are not used to train models by default.

Is a GDPR DPA available for Grok 4.1 Fast Non-Reasoning?

Yes. A GDPR Data Processing Agreement is available on at least one route serving Grok 4.1 Fast Non-Reasoning. Contact hello@opper.ai to receive it.

Grok 4.1 Fast Non-Reasoning

by xAI

Grok 4.1 Fast Non-Reasoning prioritizes speed and throughput by skipping the chain-of-thought reasoning phase, returning direct responses with low latency. It handles the same multimodal inputs as the reasoning variant and keeps a 2 million token context window, making it suitable for applications where fast responses matter more than step-by-step deliberation. This variant is aimed at high-throughput, real-time use cases such as customer support, content generation, and straightforward information retrieval where a quick first response is the priority. By skipping reasoning tokens it reduces latency on each request. Released in November 2025 alongside xAI's Agent Tools API, Grok 4.1 Fast was trained with long-horizon reinforcement learning for consistent tool calling across its full context window, giving the non-reasoning mode strong agentic behavior at speed.

Call Grok 4.1 Fast Non-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

$0.20 /1M$0.05 cache read

Output price

$0.50 /1M

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

Available routes

Grok 4.1 Fast Non-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	$0.20	$0.50	$0.05

Uptime and availability

Grok 4.1 Fast Non-Reasoning runs on a single route through the Opper gateway today, so its availability is that provider's availability.

99.40%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 4.1 Fast Non-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 4.1 Fast Non-Reasoning through the Opper gateway with one API key. Opper is drop-in compatible with the OpenAI, Anthropic and Google AI SDKs.

Grok 4.1 Fast Non-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-4-1-fast-non-reasoning",
10  messages: [{ role: "user", content: "Hello" }],
11});
12console.log(completion.choices[0].message.content);