Grok 4.6 (Reasoning)

by xAI

Grok 4.6 (Reasoning) is a reasoning model from xAI, released on August 12, 2026. It has a 500K-token context window. API pricing is $2 per 1M input tokens and $6 per 1M output tokens. It ranks #31 of 220 models by Intelligence Score with a score of 45.

Grok 4.6 is SpaceXAI's frontier model built for coding, agentic tasks, and knowledge work. It builds on Grok 4.5 with a particular focus on long-running agents and more ambitious interactive and visual work. The model supports text and image inputs, reasoning, function calling, structured outputs, and a 500K-token context window.

Key specs

ProviderxAI
Release date2026-08-12
Licenseproprietary
Context window500K tokens
Input price$2 / 1M tokens
Output price$6 / 1M tokens
Intelligence Score45
Coding index33.7

Quick answers

What is the context window of Grok 4.6 (Reasoning)?

Grok 4.6 (Reasoning) has a context window of 500K tokens.

How much does Grok 4.6 (Reasoning) cost?

Grok 4.6 (Reasoning) costs $2 per 1M input tokens and $6 per 1M output tokens through the API.

Is Grok 4.6 (Reasoning) open source?

No. Grok 4.6 (Reasoning) is a proprietary model from xAI (proprietary license).

When was Grok 4.6 (Reasoning) released?

xAI released Grok 4.6 (Reasoning) on August 12, 2026.

How does Grok 4.6 (Reasoning) compare to Claude Opus 5.5 (Reasoning)?

Grok 4.6 (Reasoning) scores 45 on the Intelligence Score versus 60.5 for Claude Opus 5.5 (Reasoning), the current #1. Input pricing is $2 vs $4 per 1M tokens.

Compare on the AI leaderboard · All AI models

More models from xAI