Grok 3 Mini is a smaller thinking model that verbalizes its reasoning before responding, making its internal thought process inspectable. It exposes reasoning tokens so you can follow how it arrived at an answer, which helps with debugging and trust in agentic workflows. It is suited to logic-based tasks, math, and structured problem solving where deep domain knowledge is not required. The model supports adjustable reasoning effort with low and high settings, structured outputs, and tool calling, making it a fit for applications that balance cost and reasoning quality on lighter workloads. With a 131k token context window and a May 2025 release, Grok 3 Mini offers a fast, compact alternative to larger reasoning models while keeping the transparent thinking that characterizes xAI's reasoning approach.
Call Grok 3 Mini on Opper with the OpenAI SDK. Sign up without a credit card. Get started
Grok 3 Mini runs on 2 different routes through the Opper gateway. Compare residency, zero data retention and training posture at a glance, with full data-handling detail per route below.
Grok 3 Mini runs on a single route through the Opper gateway today, so its availability is that provider's availability.
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.
Each route hosting Grok 3 Mini has its own privacy posture, residency, and GDPR terms. Postures are maintained by Opper with a last-verification timestamp.
Zero data retention: nothing is logged, held for abuse monitoring or used for training. No training on customer data. US; SCCs; DPA available.
Zero data retention with abuse monitoring: prompts and outputs are kept for up to 30 days for abuse monitoring only, and are not used for training. No training on customer data. US; SCCs; DPA available.
Independent benchmark scores — composite indices for reasoning, coding, and math, plus individual eval scores where available.
Call Grok 3 Mini through the Opper gateway with one API key. Opper is drop-in compatible with the OpenAI, Anthropic and Google AI SDKs.
Grok 3 Mini 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.
Copy this and paste it into a coding agent like Claude Code, Cursor or Codex and it'll wire up Opper for you.
import OpenAI from "openai";const client = new OpenAI({apiKey: process.env.OPPER_API_KEY,baseURL: "https://api.opper.ai/v3/compat",});const completion = await client.chat.completions.create({model: "xai/grok-3-mini",messages: [{ role: "user", content: "Hello" }],});console.log(completion.choices[0].message.content);
Side-by-side on privacy, EU hosting, pricing, and benchmarks.
