Released 141 days after Grok 3 Mini · All xAI releases
Grok 4 is xAI's flagship model from its July 2025 release, bringing improved reasoning depth and tool use compared to Grok 3. It accepts both text and image input across a 256k token context window, with native integration for web search and external tool invocation, making it strong for agentic systems that need grounding in current data. The model treats tool use as a first-class feature, letting developers build multi-step agents that invoke APIs, run code, and access external data sources. It handles complex reasoning, multimodal analysis, and tasks that need both accuracy and live context. Grok 4 was trained with reinforcement learning at scale on xAI's Colossus cluster. It balances reasoning power with practical performance, positioning it for production agentic applications where reliability matters alongside capability.
Grok 4 runs on 2 different routes through the Opper gateway. Compare residency, ZDR, and training posture at a glance — full data-handling detail per route below.
Grok 4 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 4 has its own privacy posture, residency, and GDPR terms. Postures are maintained by Opper with a last-verification timestamp.
Zero data retention is not on by default — abuse monitoring, 30-day retention. No training on customer data. US; SCCs; DPA available.
Zero data retention is not on by default — abuse monitoring, 30-day retention. No training on customer data. EU; DPA available.
Independent benchmark scores — composite indices for reasoning, coding, and math, plus individual eval scores where available.
Call Grok 4 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.
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-4",messages: [{ role: "user", content: "Hello" }],});console.log(completion.choices[0].message.content);
Side-by-side on privacy, EU hosting, pricing, and benchmarks.
