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Kimi K3 from Moonshot AI is newly available on the Amazon Bedrock platform

Kimi K3 (2.8 trillion parameters) from Moonshot AI has also been available on the Amazon Bedrock platform since 18 September 2026, with support for prompt caching and AWS data protection. The model was released in July 2026 as the first open model in the 3 trillion parameter class.

New: Kimi K3 is now available on Amazon Bedrock as a new distribution channel; The model supports prompt caching on Bedrock; Data in AWS Bedrock is protected by the AWS data boundary without being shared with the provider; The Bedrock deployment optimizes the model for long coding and knowledge workflows

Frontier Red Team at Anthropic: GLM-5.3 and Claude Mythos Preview have crossed a threshold in binary exploitation capabilities

The Frontier Red Team at Anthropic found that, unlike older models, GLM-5.3 and Claude Mythos Preview were able to perform a full control flow hijack in binary exploitation tests (4 % and 6 %, respectively, of 100 attempts).