xAI’s Grok 4.6 is now available in Amazon Bedrock

xAI’s Grok 4.6 is now available in Amazon Bedrock xAI’s Grok 4.6 is now available in Amazon Bedrock Today, we are announcing that xAI’s Grok 4.6 is available in Amazon Bedrock , adding a frontier model built for long-running agents, coding, and knowledge work to the Bedrock model catalog. Grok 4.6 launched on Bedrock on August 18, 2026.

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• xAI’s Grok 4.6 is now available in Amazon Bedrock Today, we are announcing that xAI’s Grok 4.6 is available in Amazon Bedrock , adding a frontier model built for long-running agents, coding, and knowledge work to the Bedrock model catalog.
• Grok 4.6 launched on Bedrock on August 18, 2026.
• It offers a 500K token context window and supports configurable reasoning effort at four levels: low, medium, high, and xhigh.
• This is xAI’s second model in Amazon Bedrock.
• When Grok 4.3 became generally available , xAI joined Amazon Bedrock as a model provider and the model was reachable through Bedrock Mantle, the OpenAI-compatible inference engine in Amazon Bedrock.
• Grok 4.6 widens that surface area considerably: it is available on both the bedrock-mantle and bedrock-runtime endpoints, and it supports the Converse API alongside Chat Completions and Responses.