Two-thirds of this shelf belongs to the brands that were already winning.
Why these three lead the shelf
1. Crestchosen 23× / 11.2% / 4/4 models
Comes back from every model when the question carries no qualifier: just best toothpaste. It owns the general answer.
2. Colgatechosen 22× / 10.7% / 4/4 models
Present on more questions than Crest and winning fewer of them outright. Total category coverage without owning a single specific claim.
3. Sensodynechosen 18× / 8.7% / 4/4 models
Owns sensitivity, a question a shopper asks in exactly those words. The narrowest position of the three and the hardest to take.
About the AI Shelf
The AI Shelf is the short list of names an AI assistant gives when someone asks what to buy. ChatGPT, Claude, Gemini and Perplexity answer the questions a real buyer asks, and every brand they name lands on the shelf. Your customer sees it before they see yours, and nobody can pay for position on it.
Each time a model chooses a brand over every other brand it could have named, that counts once. 206 choices were made here. Slice size is share of all of them.
11.2%largest holding — Crest
63.1%held by the 11 audited brands
46brands named in total
The takeaway
Thirty years of being the default answer is the strongest asset in this category. The top three are the same three a shopper would have recited from memory before any of these models existed.
In the current ARA IndexNot currently in the ARA Index — shaded by rank, darkest = chosen least often
All 46 brands — the annotated ranking
#
Name
Chosen
Share
Models
Best
Δ
1
Crest
23
11.2%
4/4
#1
—
2
Colgate
22
10.7%
4/4
#1
—
3
Sensodyne
18
8.7%
4/4
#1
—
4
Tom's of Maine
14
6.8%
4/4
#1
—
5
Oral-B
13
6.3%
4/4
#1
—
6
Listerine
11
5.3%
4/4
#1
—
7
Arm & Hammer
10
4.9%
4/4
#3
—
8
Parodontax
9
4.4%
3/4
#1
—
9
ACT
8
3.9%
4/4
#3
—
10
Philips Sonicare
8
3.9%
4/4
#1
—
11
Hello
7
3.4%
3/4
#2
—
12
Biotene
4
1.9%
3/4
#6
—
13
TheraBreath
4
1.9%
4/4
#2
—
14
Waterpik
4
1.9%
3/4
#3
—
15
Bite
3
1.5%
3/4
#1
—
16
Davids
3
1.5%
3/4
#1
—
17
Dr. Bronner's
3
1.5%
3/4
#2
—
18
Foreo
3
1.5%
3/4
#4
—
19
Georganics
3
1.5%
3/4
#3
—
20
Quip
3
1.5%
3/4
#3
—
21
Radius
3
1.5%
3/4
#4
—
22
Burst
2
1.0%
2/4
#5
—
23
CariFree
2
1.0%
1/4
#6
—
24
Cocofloss
2
1.0%
1/4
#6
—
25
Humble Co.
2
1.0%
2/4
#5
—
26
Opalescence
2
1.0%
2/4
#5
—
27
Pronamel
2
1.0%
2/4
#5
—
28
AquaSonic
1
0.5%
1/4
#6
—
29
Brio
1
0.5%
1/4
#7
—
30
Brush with Bamboo
1
0.5%
1/4
#6
—
31
Burt's Bees
1
0.5%
1/4
#4
—
32
CloSYS
1
0.5%
1/4
#6
—
33
Corsodyl
1
0.5%
1/4
#4
—
34
Desert Essence
1
0.5%
1/4
#7
—
35
Fluoridex
1
0.5%
1/4
#4
—
36
Himalaya Botanique
1
0.5%
1/4
#5
—
37
Huppy
1
0.5%
1/4
#7
—
38
Jason Natural
1
0.5%
1/4
#3
—
39
Laifen
1
0.5%
1/4
#3
—
40
Ordo
1
0.5%
1/4
#5
—
41
Plackers
1
0.5%
1/4
#7
—
42
Plus White
1
0.5%
1/4
#6
—
43
Prevident 5000
1
0.5%
1/4
#5
—
44
Rembrandt
1
0.5%
1/4
#7
—
45
SURI
1
0.5%
1/4
#1
—
46
Marvis
0
0.0%
0/4
—
—
ARA · ALGORITHM READINESS ANALYSIS · ARACO.AI — 4 models × 8 shopper questions, top answers per cell. MEASURING AI TRUST IN BRANDS. Naming variants merged before counting: Biotene · Davids · Humble Co. · Listerine · Radius. Query counts for merged brands are upper bounds.