Is the evolving set of artificial intelligence (AI) platforms based on large language models interesting as economic forecasters? Are they monolithic, or diverse? As a simple exploration, we pose to each of Grok, ChatGPT, Claude, Perplexity and Gemini the following prompt regarding the 12-month trailing U.S. consumer inflation rate over the next 12 months:
Applying all available training data and real-time updates, please project the 12-month trailing U.S. consumer inflation rate for each of the next 12 months. Do not provide any explanations.
We then compare and contrast results from AI panel members. Using responses to the prompt as posed in early June 2026, we find that:
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