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Best object storage for the cloud

3 models · updated 2026-07-09

The verdict

Amazon S3 leads — All 3 models rank Amazon S3 the top pick.

Combined ranking

  1. 1
    Amazon S3incumbent—15 pts
    GPT #1Claude #1Gemini #1

    unmatched scale, reliability, ecosystem support, mature security, rich storage classes, replication, lifecycle controls, analytics and AI integrations

    To stay #1 make pricing simpler and materially reduce egress/request-cost surprises

  2. 2
    Cloudflare R2incumbent—10 pts
    GPT #4Claude #2Gemini #2

    Zero egress fees fundamentally change the economics for content delivery, AI training data, and multi-cloud architectures; S3-compatible API, tight integration with Workers and Cloudflare's global network, and aggressive per-GB pricing.

    To rank higher Close the gap on enterprise-grade features and consistency guarantees — object versioning maturity, lifecycle/replication depth, and compliance certifications still trail AWS.

  3. 3
    Google Cloud Storageincumbent—10 pts
    GPT #2Claude #3Gemini #3

    excellent performance, clean multi-region design, strong data/AI integration, Autoclass automation, simpler operations than many enterprise rivals

    To rank higher close the ecosystem and compatibility gap with Amazon S3

  4. 4
    Azure Blob Storageincumbent—7 pts
    GPT #3Claude #4Gemini #4

    deep Microsoft enterprise integration, strong identity/governance, mature hot/cool/cold/archive tiers, Data Lake Storage Gen2, broad compliance coverage

    To rank higher simplify the developer and operations experience outside Microsoft-centric environments

  5. 5
    Wasabi—2 pts
    GPT #5Claude #5Gemini —

    predictable low-cost pricing, no egress or API fees, S3 compatibility, simple hot-storage model, good backup/media/archive value

    To rank higher expand advanced enterprise features, regional depth and cloud-native integrations

  6. 6
    Backblaze B2incumbent—1 pts
    GPT —Claude —Gemini #5

    Transparent and extremely low pricing, simple setup, and reliable S3 API compatibility.

    To rank higher Build out a robust global multi-region replication system.

Rank history

12345606-2906-3007-0807-09Amazon S3Cloudflare R2Google Cloud StorageAzure Blob StorageWasabiBackblaze B2
Amazon S3#1Cloudflare R2#4Google Cloud Storage#2Azure Blob Storage#3Wasabi#5Backblaze B2#6

By model

ChatGPT

  1. 1.Amazon S3
  2. 2.Google Cloud Storage
  3. 3.Azure Blob Storage
  4. 4.Cloudflare R2
  5. 5.Wasabi

Claude

  1. 1.Amazon S3
  2. 2.Cloudflare R2
  3. 3.Google Cloud Storage
  4. 4.Azure Blob Storage
  5. 5.Wasabi

Gemini

  1. 1.Amazon S3
  2. 2.Cloudflare R2
  3. 3.Google Cloud Storage
  4. 4.Azure Blob Storage
  5. 5.Backblaze B2

Tracked by ModelsAgree · rank 1 = 5 pts … rank 5 = 1 pt · re-polled continuously