BrightEdge: ChatGPT, Google AI Overviews and AI Mode disagree on brand picks 62% of the time

BrightEdge ran identical prompts through ChatGPT, Google AI Overviews and Google AI Mode and found the platforms recommend different brands in 61.9% of queries, agreeing on all three in only 17%. ChatGPT mentions brands 3.2x more often than it cites sources, while AI Overviews cites 2.4x more than it mentions.

• Same brands across all three platforms in only 17% of queries
• ChatGPT: 2.37 mentions and 0.73 citations per query
• AI Overviews: 6.02 mentions and 14.30 citations per query
• Lowest agreement on "best" queries at 23%, highest on "compare" at 80%