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llms.txt GeneratorWhat does an average top-three overlap of 2.8 mean?
Mostly, it means models overlap meaningfully but not completely. On average, the top-three recommendation sets share 2.8 entries, which still leaves enough room for important ranking and inclusion differences.
The key numbers.
- Average top 3 overlap
- Average overlap among top-three results across models.
- 2.8
- Average agreement
- Mean cross-model agreement rate.
- 43.3%
Consensus at the category level can still hide decisive differences at the brand level, requiring operators to monitor multiple AI platforms rather than relying on a single proxy.
The evidence.
| Measure | Result |
|---|---|
| Average top 3 overlap Average overlap among top-three results across models. | 2.8 |
| Average agreement Mean cross-model agreement rate. | 43.3% |
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.
Understanding this overlap metric turns a study finding into an operating rule teams can use when they decide what to publish, refresh, or measure next, particularly given the 43.3% average agreement rate.
Questions about this answer.
Cite this answer.
Source study: Model Divergence“Mostly, it means models overlap meaningfully but not completely. On average, the top-three recommendation sets share 2.8 entries, which still leaves enough room for important ranking and inclusion differences.”
Mack Grenfell · What does an average top-three overlap of 2.8 mean?
Same Question, Different AI, Different Answers · Trakkr Research · Updated 11 March 2026