xAI’s Grok 4.3 Model Available via Amazon Bedrock

AWS incorporates xAI’s reasoning-focused Grok 4.3 into Bedrock, enhancing enterprise AI application capabilities.

By Sofia Reed · Editorial pseudonym · 2026-06-15 · 1 min read

AI-ASSISTED REPORTING · RETROSPECTIVE ARCHIVE

Retrospective edition: 2026-06-15. Source published: 2026-06-15. Added to this archive: 2026-11-03. This briefing was prepared later from the linked announcement; it was not published on this website on the historical edition date.

AWS announced the availability of xAI’s Grok 4.3 on Amazon Bedrock, expanding AI model options on the platform. Grok 4.3 emphasizes configurable reasoning and tool use for high-quality outputs in tasks like customer support, legal research, and financial queries.

Powered by Amazon Bedrock’s Mantle inference engine, Grok 4.3 supports efficient, cost-effective processing with features like structured output and response streaming. This model suits multi-turn workflows across conversational AI and search applications in enterprise contexts.

Source & further reading

Grok 4.3 from xAI now available in Amazon Bedrock ↗

Source published 2026-06-15. This report was prepared with AI assistance from the linked primary-source material. Claims and limitations should be checked against the original announcement or research.