Grok 4.3 from xAI now available in Amazon Bedrock (opens in new tab)

Today, AWS announces the availability of xAI's Grok 4.3 model on Amazon Bedrock. With this launch, xAI joins Amazon Bedrock as a model provider, 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 always-on and configurable reasoning effort (none, low, medium, high). Because reasoning is always active rather than optional, it behaves more consistently across multi-step agent lo...