Every category where a model named Amazon S3 for a mid-market B2B company. Share is first choices across the direct, paraphrase, budget and scale prompts; rank is within every product named in that category.

Category	Function	Share	Rank	Negative rate	Labels	Quadrant
Object storage	Cloud and infrastructure	15%	3 of 46	23%	60	accepted challenger
Backup and disaster recovery	Cloud and infrastructure	0%	104 of 121	40%	5	under 10 labels · led by Veeam at 18%

Movement

This is the first edition on this tier, so no move can be computed for Amazon S3 yet. From the next edition this section shows, per buyer segment, whether its share moved by more than the measured noise floor.

By model

How each model treated Amazon S3 across every prompt where it was named for a mid-market B2B company. Twelve models, six prompts per category.

Model	First choice	Alternative	Mention	Negative	Labels
Claude Haiku 4.5	2	1	3	0	6
GPT-5.4 mini	3	0	3	1	7
Gemini 3.5 Flash	0	1	2	5	8
Perplexity Sonar	2	0	0	2	4
Grok 4.1 Fast	1	2	1	2	6
Mistral Small	2	0	1	0	3
DeepSeek V4 Flash	1	1	1	3	6
Llama 4 Maverick	0	0	2	0	2
Qwen 3.7 Flash	2	2	2	1	7
Kimi K2	1	3	1	1	6
GLM 4.7 FlashX	0	1	4	0	5
MiniMax M2.5	2	0	2	1	5

By framing

Which of the six questions produced the naming. By model says how often; this says asked what. The first-choice count on the right carries the marks of the models that produced it.

FramingLabels by classFirst choices

Direct34 labels14

Paraphrase21 labels4

Comparative33 labels18not counted in share

Budget-constrained25 labelsNone

Scale-constrained24 labels1

Negative32 labels4not counted in share

First choiceAlternativeMentionNegative169 labels in all, every segment counted; 19 of the 41 first choices count toward share, since the comparative and negative framings do not. The bar is one segment per label class, to scale within the framing.

What the models said for it

Verbatim evidence the judge attached to positive labels.

“Choose AWS S3 if you need the broadest compatibility, have an existing AWS footprint, or require very granular control over storage tiers” Qwen 3.7 Flash · Object storage · comparative prompt · first choice

“Amazon S3 and Microsoft Azure Blob Storage are the top choices due to their scalability, security, and ecosystem integration.” Mistral Small · Object storage · direct prompt · first choice

“Choose Amazon S3 if you want the most mature platform, widest feature set, and strongest enterprise ecosystem.” GPT-5.4 mini · Object storage · comparative prompt · first choice

“For Enterprise/Critical Apps: Stick to AWS S3, but set up billing alerts immediately to monitor egress costs.” Qwen 3.7 Flash · Object storage · negative prompt · first choice

And against it

Verbatim evidence attached to negative labels. A warning on a product with few labels is a warning; on a product with many, it is one voice among them.

“avoid for frequently changing data because they have 90-day and 180-day minimums, respectively” Perplexity Sonar · Object storage · negative prompt · hard negative

“What to avoid on a budget ... ~$23/TB/month plus ~$90/TB in egress fees” DeepSeek V4 Flash · Object storage · budget prompt · hard negative

“avoid standard AWS S3, Microsoft Azure, or Google Cloud for backup storage” Gemini 3.5 Flash · Backup and DR · budget prompt · hard negative

“4-10x more expensive | Avoid unless locked in” Grok 4.1 Fast · Object storage · budget prompt · hard negative

Named alongside

The products named in the same answers as Amazon S3, over the 165 answers that named it. Took the first choice instead counts the answers where the other product was the first choice and Amazon S3 was named but was not.

ProductSame answerTook the first choice insteadHead to head

Backblaze B2115 of 16538Compare →

Wasabi114 of 16514Not in the top three

Google Cloud Storage112 of 1650Not in the top three

Azure Blob Storage108 of 1652Not in the top three

Cloudflare R2100 of 16523Compare →

MinIO59 of 1650Not in the top three

DigitalOcean Spaces54 of 1652Not in the top three

IBM Cloud Object Storage28 of 1651Not in the top three

Storj19 of 1650Not in the top three

Scality RING17 of 1652Not in the top three

A head-to-head page exists where both products are in a category's top three. The other rows are the same fact without a page behind them, so they link to the product instead.

What carried it into the answer

The sites and pages cited by the answers that named Amazon S3. A fact about retrieval, not a lever on the model.

Citations exist only for the models that return a source list, four of the twelve in this edition, so these counts come from 118 of the 165 answers that named Amazon S3 and are not a share of its labels.

Domains cited

solved.scality.com61

mixpeek.com59

digitalocean.com43

gartner.com40

worldmetrics.org35

enterprisestorageforum.com34

backblaze.com33

cloudian.com32

aimultiple.com29

github.com28

394 of the 394 domain citations in answers naming Amazon S3 came from somebody else's page.

Pages cited

mixpeek.com/blog/object-storage-comparison-202652

gartner.com/reviews/market/file-and-object-storage-platforms40

digitalocean.com/resources/articles/object-storage-solutions-cloud-data37

enterprisestorageforum.com/cloud/best-object-storage-solutions33

aimultiple.com/cloud-object-storage29

mixpeek.com/curated-lists/best-s3-compatible-object-storage29

worldmetrics.org/service/object-storage29

solutionsreview.com/data-storage/the-best-object-storage-solutions28

Pages are listed as the models cited them.

Names read as Amazon S3

What the judge wrote, as written, with how often. The vendor table decides that these count as Amazon S3; a claim can dispute any of them.

AWS S3 31AWS S3 Standard 2Amazon S3 (AWS) 2Amazon S3 (Simple Storage Service) 2Glacier Deep Archive 2AWS 1AWS S3 Glacier 1AWS S3 Glacier Instant Retrieval 1AWS S3 Standard-Infrequent Access (S3-IA) 1AWS S3/Glacier 1Amazon Simple Storage Service (S3) 1Amazon Web Services 1

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Claim this page

Claiming is free and changes nothing in the data. A claimed page shows a verified contact who is told when each edition publishes and when Amazon S3's standing changes by more than the noise floor; the right to propose corrections to the vendor table, meaning names the judge wrote that should or should not read as Amazon S3, applied by version and listed in the change log; and a one-line description supplied by the vendor and marked as such.

It does not get any change to labels, shares or verdicts, any preview, or any say over which quotes appear. A verification link goes to your work email; an address at amazon.com is approved on the spot, any other address is reviewed by hand.

Your name and company appear on the claimed page, or the company alone if you ask below. A title and a LinkedIn address appear there too if you give them, and are left off if you do not. Your email address is never published.