xAI's Grok 4.3 available on Amazon Bedrock
Amazon Bedrock now offers xAI's Grok 4.3 model, expanding choices for generative AI applications. Grok 4.3 is a reasoning-first model designed for consistent multi-step agent behavior and efficient token usage, making it suitable for enterprise workloads like contract review and financial analysis. It runs on Bedrock's new Mantle inference engine, optimized for performance and cost.
- →Grok 4.3 model integrated with Amazon Bedrock
- →Grok 4.3 features reasoning-first architecture and configurable effort
- →Enhanced tool use and instruction following for agentic workflows
- →Grok 4.3 runs on Mantle inference engine in Amazon Bedrock
- →Grok 4.3 is optimized for enterprise workloads and conversational AI
Features (4) ›
- Grok 4.3 model integrated with Amazon Bedrock
xAI's Grok 4.3 model is now available on Amazon Bedrock as a new model provider. This allows users to build generative AI applications leveraging Grok 4.3's capabilities.
- Grok 4.3 features reasoning-first architecture and configurable effort
Grok 4.3 is a reasoning-first model with always-on and configurable reasoning effort. This design ensures consistent behavior across multi-step agent loops, unlike models that may skip reasoning steps.
- Enhanced tool use and instruction following for agentic workflows
The Grok 4.3 model offers strong tool use and instruction-following capabilities, ideal for building sophisticated multi-step agents. It also provides token efficiency for cost-effective, high-volume inference.
- Grok 4.3 runs on Mantle inference engine in Amazon Bedrock
The Grok 4.3 model operates on Mantle, Amazon Bedrock's new inference engine. Mantle is engineered for price performance and supports features like tool calling, structured output, and response streaming.
Notes (1) ›
- Grok 4.3 is optimized for enterprise workloads and conversational AI
Grok 4.3 is particularly suited for enterprise tasks such as contract review, case law research, and financial document Q&A. It delivers consistent, high-quality results for conversational AI, search, chat, and multi-turn workflows.
https://aws.amazon.com/about-aws/whats-new/2026/06/grok-amazon-bedrock/