AIRANKS — The Authoritative Rankings for AI Web Content

AIRANKS measures AI visibility: we ask AI models real product and service questions, capture the complete answers as immutable observations, and publish what they contain — which brands were mentioned, which domains were cited, and which exact pages were linked. Every domain gets an AIR score from 1–10 (a decile of visibility in the active dataset; 0 means insufficient data), with the methodology in the open.

AIR

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The Question

← all rankings / dataset COBALT

Best mattress for side sleepers under 500

Zinus takes the top spot in 89.9% of resamples. Of 7 ranked brands, only 4 hold a position we'd call firm.

0
answers sampled
0
brands named
1,000
bootstrap resamples

Who AI Cites For This Question

25 cited pages · bars vs the leader

We've tested every side sleeper mattress you can buy in 2026 - these 8 were the best at cushioning our hips and shoulders for ultra-comfy sleepwww.tomsguide.comtomsguide.com/best-picks/best-matt…rs?utm=airanks.net140
The Best Mattresses Under $500, Tested by Sleep Expertswww.goodhousekeeping.comgoodhousekeeping.com/home-products…0/?utm=airanks.net82
Siena Signature 10" Memory Foam Mattress, Medium Firm Supportwww.sienasleep.comsienasleep.com/mattress/queen?utm=airanks.net73
Original Green Tea Memory Foam Mattress | Zinuswww.zinus.comzinus.com/products/original-green-…ss?utm=airanks.net40
Original Green Tea Memory Foam Mattress | Zinuswww.zinus.comzinus.com/collections/queen-size-m…ss?utm=airanks.net35
Medium Firm Copper Gel Mattress, Black 12" Memory Foam & Hybrid Spring | EGOHOMEegohome.comegohome.com/products/ego-black-mat…ch?utm=airanks.net32
Zinus Green Tea Memory Foam Mattress review: Side-sleeping delight for under $500www.tomsguide.comtomsguide.com/reviews/zinus-green-…ss?utm=airanks.net29
Novilla Bliss Review 2026: Best Memory Foam Mattress (Everyday Health Pick)www.novilla.netnovilla.net/blogs/article/novilla-…ss?utm=airanks.net28

The Ranking, With Its Uncertainty

Zinus firm Zinus — ci 0.83–1.00 · n=369 · 89.9% of resamples held this rank · named in 94% of answers
Allswell firm Allswell — ci 0.83–1.00 · n=369 · 89.9% of resamples held this rank · named in 78% of answers
Siena locked Siena — ci 0.67–0.67 · n=369 · 100.0% of resamples held this rank · named in 47% of answers
Brooklyn Bedding locked Brooklyn Bedding — ci 0.50–0.50 · n=369 · 100.0% of resamples held this rank · named in 35% of answers
Nectar gathering Nectar — gathering data, n=369. No bootstrap interval yet.
Sealy gathering Sealy — gathering data, n=369. No bootstrap interval yet.
Serta gathering Serta — gathering data, n=369. No bootstrap interval yet.

The Incomparability Lattice

what the intervals separate, not what the list claims

An edge means one brand's interval sits strictly above another's — zero overlap. No edge between two brands is not a gap in the drawing, it is the finding: their intervals overlap, and the bootstrap cannot tell them apart. Brands on the same rung are incomparable, not tied — the ranking above orders them anyway because a list has to print a total order; this diagram is the honest version.

Zinus

0.83–1.00

Allswell

0.83–1.00

Siena

0.67–0.67

Brooklyn Bedding

0.50–0.50