According to AnthropicAI on X, the company introduced the AI Fluency Index based on 11 observable behaviors across thousands of Claude conversations to measure how effectively people collaborate with AI (source: AnthropicAI post linking to research). As reported by Anthropic’s research page, tracked signals include iteration frequency and refinement patterns in prompts, providing a standardized framework for teams to benchmark AI-assisted workflows and upskill prompt strategies. According to Anthropic, organizations can apply the index to identify training gaps, design prompt engineering playbooks, and quantify ROI from increased iteration and feedback loops in Claude-driven tasks, supporting enterprise adoption and productivity gains.