xAI’s Grok 4.6 is now available in Amazon Bedrock

xAI's Grok 4.6 is now available in Amazon Bedrock, featuring a 500K token context window, four reasoning effort levels, and support for long-running agents, coding, and knowledge work.

By AIWI EditorialReviewed by Chayanika DivekarAI-assisted summary · human-reviewed1 min readPublished Sep 21, 2026

Single source1 source

Reality Check

Availability: Shipping now
Hype-o-meter: Mostly substance
Who it's for: Developers · Enterprises
Do this now: Test Grok 4.6 via Amazon Bedrock using the Converse API to evaluate its fit for your agent or coding workloads.
Claims check: Claims are specific and product-focused; performance benchmarks are not provided in the input.
Corroboration: Single source · 1 source

Key Takeaways

Grok 4.6 from xAI is available in Amazon Bedrock
Offers a 500K token context window and four reasoning effort levels
Runs on bedrock-mantle and bedrock-runtime endpoints
Supports the Converse API and cross-Region inference

xAI’s Grok 4.6 model is now accessible through Amazon Bedrock. According to AWS, the model is positioned for long-running agents, coding, and knowledge work. It provides a 500K token context window and four reasoning effort levels.

The model runs on both the bedrock-mantle and bedrock-runtime endpoints, and includes support for the Converse API and cross-Region inference.

Why it matters

Availability within Amazon Bedrock gives users a managed pathway to deploy Grok 4.6, with the large context window and configurable reasoning levels aimed at tasks involving extended workflows and code.

Who should care

Developers and organizations already using Amazon Bedrock who are evaluating frontier models for agent-based, coding, or knowledge-work applications.

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Sources & Further Reading

xAI’s Grok 4.6 is now available in Amazon Bedrock — AWS Machine Learning Blog · Sep 21, 2026

Frequently Asked Questions

What context window does Grok 4.6 offer?

The model provides a 500K token context window.

Which endpoints and APIs are supported?

It runs on bedrock-mantle and bedrock-runtime endpoints, with Converse API and cross-Region inference support.

AI tools in this story

Grok★ 4.0

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