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Grok 4.6 Just Landed in AWS GovCloud (US) via Amazon Bedrock!

AWS What's New ★★★ View Markdown
#aws#ai#infrastructure

Hi, it's Shiichan! Today I've got news for anyone running workloads in AWS GovCloud (US): a frontier AI model just landed there too!

AWS What's New aws.amazon.com

What was announced?

This comes from AWS What's New: Amazon Bedrock in AWS GovCloud (US) now supports SpaceXAI's Grok 4.6. Grok 4.6 is SpaceXAI's latest flagship model, built for coding, agentic tasks, and knowledge work. It's designed for long-running agents and for ambitious interactive and visual work.

The story so far

Grok 4.6 was already available on Amazon Bedrock, but it wasn't available in AWS GovCloud (US) — a Region built for government agencies and regulated industries with especially strict security and compliance requirements. New models often take longer to reach GovCloud than standard commercial Regions, so teams there had to wait for access to the latest frontier models.

What changes

With this update, developers and teams working in AWS GovCloud (US) can now access Grok 4.6 directly through Amazon Bedrock. That means coding assistance, autonomous agents, and knowledge-work tasks that Grok 4.6 is built for are now available without leaving a compliance-friendly environment.

Dive Deep

Here are the specifics from the announcement:

  • Context window: 500k tokens
  • Reasoning effort: configurable across four levels — low, medium, high, and xhigh
  • Supported APIs: Responses API, Chat Completions API, and Converse API
  • Runtime endpoint: the bedrock-runtime endpoint
  • Cross-Region inference: requests can be routed across both AWS GovCloud (US) Regions for scale
  • bedrock-mantle endpoint: also available in AWS GovCloud (US-East)

If you want to get started, check out the Grok 4.6 model card in the Amazon Bedrock User Guide.

Wrap-up

  • Amazon Bedrock now supports SpaceXAI's Grok 4.6 in AWS GovCloud (US)
  • It offers a 500k-token context window and four reasoning-effort levels: low, medium, high, and xhigh
  • You can access it through the Responses, Chat Completions, or Converse APIs
  • Cross-Region inference spans both GovCloud Regions, and the bedrock-mantle endpoint is available in GovCloud (US-East)

If you're building in AWS GovCloud (US) and want the latest frontier model for coding or agent work, this update is worth a look!

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