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Claude

How to Measure Citation Share Across ChatGPT, Claude, Perplexity, and Gemini

Citation Share is a new metric for the AI era, tracking brand mentions in AI engine responses. This article outlines a methodology to measure your brand's Citation Share across platforms like ChatGPT, Claude, Perplexity, and Gemini, providing insights for PR and marketing strategies.

EPR Editorial Team · May 20, 2026

Technology

Limitations to ChatGPT: What to Know Before Integrating AI Into Your Strategy (2026 Edition)

Originally published February 2023, weeks after ChatGPT's launch. Rebuilt June 2026 as EPR's current reference on AI integration into communications work — what the original limitations got right, what subsequent model evolution has addressed, and the five operational disciplines for 2026 AI integration.

EPR Editorial Team · Feb 16, 2023