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Grok 4.6

Available · Language, Multimodal, Reasoning

Grok 4.6 is a language model in xAI's Grok line for text and image input, released on 12 August 2026 on the xAI API, in Cursor and Grok Build, and later on Amazon Bedrock, Google's Model Garden and Microsoft Foundry. xAI says it builds on Grok 4.5 with a focus on long-running agents and interactive and visual work; consumer app support is planned for later. [1] [2]1 Introduction [3] [4] [5] Primary source

Timeline of Grok 4.6 →

Claims and evidence

  • Released Primary source[1]first paragraph; Get started with Grok 4.6 [6]August: Grok 4.6
  • Status AvailableListed as a current API model with pricing when checked on 2026-10-01; not named in any xAI retirement guide. Primary source[7]Details [8]Text API Pricing
  • Successor of Grok 4.5 Primary source[1]first paragraph [2]1 Introduction
  • Change · Training data Longer supplemental training with curated model-generated reasoning and engineering data and an improved optimizer; Grok 4.5 was used to regenerate its fine-tuning trajectories.Compared with Grok 4.5 Primary source[2]
  • Change · Training data Reinforcement learning extended to environments for kernel optimization, web development and computer-aided design.Compared with Grok 4.5 Primary source[1]
  • Change · Reasoning Adds an xhigh reasoning effort level; Grok 4.5 launched with low, medium and high.Compared with Grok 4.5 Primary source[6]August: Grok 4.6; July: Grok 4.5
  • Change · Safety xAI says it improved and recalibrated the safeguards and ran a wider pre-deployment test suite than before.Compared with Grok 4.5 Primary source[1]
  • Input text, image Primary source[7]At a glance: Modalities [2]1.1 Overview, list of channels [6]August: Grok 4.6
  • Output text Primary source[7]At a glance: Modalities [6]August: Grok 4.6
  • Context window 500,000 tokensThe release notes say 500k. Requests above 200K prompt tokens are billed at a higher rate. Primary source[7]At a glance: Context window [6]August: Grok 4.6
  • Parameters Not disclosedNo parameter count stated. The model card calls Grok 4.6 the latest release in SpaceXAI's 1.5T-scale model family without saying what the figure measures. No claim madeNo source
  • Access API, cloud partnerAlso offered in Cursor and in xAI's Grok Build coding agent. The model card says xAI plans to add Grok 4.6 to its consumer web and mobile apps and to X at a later date; no primary source checked confirms that this happened, so consumer-app is left out. Primary source[1]Get started with Grok 4.6 [3] [4] [5]

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