According to Anthropic (@AnthropicAI), researchers have analyzed the internals of three open-weights AI models to map their 'persona space,' uncovering the 'Assistant Axis'—a specific neural activity pattern that drives assistant-like behaviors. This discovery offers concrete pathways for AI developers to engineer models with more consistent and customizable assistant personas, potentially accelerating innovation in enterprise virtual assistants and customer support automation (source: Anthropic, https://t.co/zW6n1CVG17).