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 loops than models that can skip thinking. It also offers strong tool use and instruction-following capabi
Source: AWS What's New — read the full report at the original publisher.