Anthropic Blocks Huawei and Amazon Chips From Opus 5.5 Kernel Development

Support documents for Claude Opus 5.5 reveal classifiers that restrict frontier LLM kernel development on Huawei and Amazon Trainium 3 chips. When triggered, the model falls back from Opus 5.5 to Opus 5.

• Opus 5.5 classifiers block kernel development for Huawei and Amazon Trainium 3 chips
• Triggered filters make the model fall back from Opus 5.5 to Opus 5
• The restriction does not affect most traditional AI or ML development
• Separate classifiers prevent extraction of the model's full reasoning process