Claude Opus 5.5 is now available on AWS GovCloud (US)

UpdateSep 22, 2026VerifiedAdded Sep 22, 2026

AWS GovCloud (US) now offers Claude Opus 5.5, Anthropic’s most capable Opus model yet and, the first of the Claude 5.5 model family, a better collaborator that handles long-running coding and knowledge work, reporting back clearly on what it did, what it found, and what it needs next.

Topics: LLMs, Pricing

AWS's release notes

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More Amazon Bedrock releases

Every Amazon Bedrock release

Date	Release	Type
Sep 22	OpenAI GPT-6 Sol and GPT-6 Luna are now generally available on Amazon Bedrock GA	GA
Sep 22	Claude Opus 5.5 is now available on AWS Update	Update
Sep 23	Amazon Bedrock Managed Knowledge Base now supports Salesforce and Zendesk as native data source connectorsunverified Update	Update
Sep 18	Kimi K3 by Moonshot AI is now generally available on Amazon Bedrock GA	GA
Sep 18	The new AgentCore Runtime is now available in Amazon Bedrock AgentCore Update	Update
Sep 11	Amazon Bedrock Managed Knowledge Base now supports multimodal embeddings for video, audio, and image content with TwelveLabs Marengo 3.0 Update	Update
Sep 9	Amazon Bedrock Managed Knowledge Base adds APIs and console support for debugging document-level access control Update	Update
Sep 9	Amazon Bedrock Managed Knowledge Base now supports Confluence Data Center as a native data source connector Update	Update

Also shipped on Sep 22, 2026

AWS in September 2026

Date	Company	Release	Product	Type
Sep 22	Databricks	Shopify connector (Beta) Databricks LakeflowBeta	Lakeflow	Beta
Sep 22	Databricks	Lakebase backup schedule API (Beta) Databricks LakebaseBeta	Lakebase	Beta
Sep 22	Anthropic	Claude Opus 5.5 launches with a 1M token context window and 128k output Anthropic Claude PlatformGA	Claude Platform	GA
Sep 22	Anthropic	Fast mode research preview available for Claude Opus 5.5 on the Claude API Anthropic Claude PlatformPreview	Claude Platform	Preview
Sep 22	Anthropic	Claude API beta lets tools be defined inside mid-conversation system messages Anthropic Claude PlatformBeta	Claude Platform	Beta
Sep 22	Vercel	Drives for Vercel Sandbox are now in public beta Vercel AI SDK and AI GatewayBeta	AI SDK and AI Gateway	Beta