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llms.txt GeneratorDo AI models recommend the same brands?
Rarely. Average agreement across the study is only 43.3 percent, and only 4.0 percent of prompts produced perfect agreement across all 8 models tested.
The key numbers.
- Average agreement
- Mean cross-model agreement rate.
- 43.3%
- Perfect agreement
- Only a small share of prompts produce unanimous outcomes.
- 4.0%
- Models analyzed
- OpenAI, Anthropic, Gemini, Grok, Deepseek, Meta, Perplexity, and Google AI Overviews.
- 8
A brand that secures visibility on one platform does not automatically capture share on others, requiring multi-platform measurement strategies.
The evidence.
| Measure | Result |
|---|---|
| Average agreement Mean cross-model agreement rate. | 43.3% |
| Perfect agreement Only a small share of prompts produce unanimous outcomes. | 4.0% |
| Models analyzed OpenAI, Anthropic, Gemini, Grok, Deepseek, Meta, Perplexity, and Google AI Overviews. | 8 |
Population and method
Built from 797,644 valid comparisons across 44,088 reports and 8 models, covering 6,439,133 model responses in the observed window.
Where the evidence stops
Agreement is measured across recommendation outputs, not across hidden reasoning or retrieval context.
Average agreement can hide large differences between query classes and model pairs.
The study measures overlap, not which answer was objectively “right”.
What to do with this
- Track visibility across multiple models instead of using one platform as a proxy for the whole market.
- Prioritize query classes where disagreement is highest because that is where share can move fastest.
- Treat consensus as a benchmark but treat divergence as the operating reality.
Operators cannot rely on a single AI platform as a proxy for overall market visibility. Resource allocation must account for platform divergence to accurately measure and influence brand presence.
Questions about this answer.
Cite this answer.
Source study: Model Divergence“Rarely. Average agreement across the study is only 43.3 percent, and only 4.0 percent of prompts produced perfect agreement across all 8 models tested.”
Mack Grenfell · Do AI models recommend the same brands?
Same Question, Different AI, Different Answers · Trakkr Research · Updated 11 March 2026