xAI · 2026

Grok 4

8.8Frontier

CompanyxAI

Release2026

TypeFrontier

Context window256K tokens

Input typesText, Image

Output typesText, Image

ReasoningExcellent

CodingVery good

MultimodalYes

API availableYes

PricingFree / $30 mo

Overview

Grok 4 is a frontier model from xAI, released in 2026. It accepts text, image as input and produces text, image. With a context window of 256K tokens, it is well suited to real-time knowledge and reasoning.

Capabilities

On reasoning, Grok 4 is rated excellent, while its coding ability is very good. Multimodal support: Yes. These characteristics make it a strong fit for real-time knowledge and reasoning. As with any frontier system, real-world performance depends heavily on how you prompt and integrate it.

Availability & Pricing

Grok 4 is accessible via an API. Pricing model: Free / $30 mo. Availability and pricing for AI models change frequently; confirm the latest details from xAI before building on it.

Best Use Cases

The sweet spot for Grok 4 is real-time knowledge and reasoning. Teams choosing a model should weigh context length, cost, latency and modality against their workload — Grok 4 is a particularly good match when those priorities align with its strengths.