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llms.txt GeneratorHow often is there perfect consensus across models?
Rarely. Only 4.0% of prompts produced unanimous agreement across all 8 models in the study.
The key numbers.
- 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
- Valid comparisons
- Cross-model recommendation comparisons in the study.
- 797,644
Perfect consensus is the exception, meaning operators cannot rely on a single model to represent the entire AI search landscape.
The evidence.
| Measure | Result |
|---|---|
| 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 |
| Valid comparisons Cross-model recommendation comparisons in the study. | 797,644 |
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.
Relying on a single model for visibility measurement creates blind spots. Operators must measure across multiple engines to accurately assess brand presence and allocate optimization resources.
Questions about this answer.
Cite this answer.
Source study: Model Divergence“Rarely. Only 4.0% of prompts produced unanimous agreement across all 8 models in the study.”
Mack Grenfell · How often is there perfect consensus across models?
Same Question, Different AI, Different Answers · Trakkr Research · Updated 11 March 2026