xAI’s Grok 4.3 model is now available on Amazon Bedrock in AWS GovCloud (US-West). With this launch, xAI joins Amazon Bedrock as a model provider in AWS GovCloud (US-West), giving you even more choice as you build generative AI applications across reasoning, agentic, and enterprise workflows. Grok 4.3 is a reasoning-first model that offers configurable reasoning effort (none, low, medium, high).
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