xAI's Grok 4.3 now available on Amazon Bedrock in AWS GovCloud
xAI's Grok 4.3 large language model is now available on Amazon Bedrock in AWS GovCloud (US-West), expanding model choices for generative AI development. This reasoning-first model offers configurable effort levels, strong tool use, and token efficiency, making it suitable for enterprise workloads like customer support and financial document analysis. It runs on Bedrock's new Mantle inference engine, optimized for price performance.
- →Grok 4.3 model integrated into Amazon Bedrock for GovCloud
- →Grok 4.3 offers configurable reasoning and enhanced capabilities
- →Grok 4.3 runs on the new Mantle inference engine
- →Grok 4.3 optimized for enterprise workloads
Features (3) ›
- Grok 4.3 model integrated into Amazon Bedrock for GovCloud
xAI's Grok 4.3 model is now accessible via Amazon Bedrock, specifically within the AWS GovCloud (US-West) region. This integration provides AWS GovCloud customers with additional options for developing generative AI applications, including those involving reasoning and agentic workflows.
- Grok 4.3 offers configurable reasoning and enhanced capabilities
The Grok 4.3 model features configurable reasoning effort (none, low, medium, high), strong tool use, and instruction-following capabilities suitable for building reliable agents. It is designed for token efficiency to support cost-effective high-volume inference.
- Grok 4.3 runs on the new Mantle inference engine
The model utilizes Mantle, a new inference engine on Amazon Bedrock that is engineered for price performance. Mantle supports features like tool calling, structured output, and response streaming.
Enhancements (1) ›
- Grok 4.3 optimized for enterprise workloads
This model is particularly well-suited for enterprise use cases such as customer support, web development, case law research, and financial document Q&A. It aims to deliver consistent, high-quality results across various conversational AI and search workflows.
https://aws.amazon.com/about-aws/whats-new/2026/07/grok-4-3-bedrock-govcloud/
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