High-Throughput Object Storage to Keep GPUs Fed

Put AI data to work on any cloud, anywhere. Keep data pipelines moving at scale with S3 compatible object storage designed (and priced) for cloud interoperability, starting at $6/TB/month.

Backblaze B2 is the storage cloud for innovators building at the speed of AI

Maximize throughput per dollar spent

High-throughput and always-hot storage handles concurrent operations without performance bottlenecks with throughput speeds up to 1Tbps.

Work with any GPU, any cloud, anywhere

S3 compatible to work with any GPU or HPC cluster, on-prem or in the cloud.. Egress is included so you can retrieve and use your data without surprise fees.

Put your data to work without penalties

Access and move your data freely for training and inference with 3x free egress for all, even bandwidth-intensive GenAI audio and video.

Protect your data at scale

Safeguard AI datasets in Backblaze’s SOC-2 compliant data centers, backed by 11 nines of durability and automated server-side encryption.

Free Resources for Higher Education

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Backblaze integrates with these leading companies

Infinitely scalable storage for AI’s unlimited potential

Backblaze’s purpose-built storage architecture meets AI-ready networking to securely store petabyte-scale datasets and keep them accessible. Iterate faster with zero upload and delete fees, and without the restrictions of cold storage.

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Pricing options that let you stay in your budget

Compare Backblaze B2’s pricing stats against Amazon S3, Microsoft Azure, and Google Cloud. B2 hits it out of the park with unbeatable savings.

Pay-As-You-Go

B2 Reserve

Backblaze B2 LogoBackblaze B2 Icon
Amazon S3 LogoAmazon S3 Icon
Microsoft Azure LogoMicrosoft Azure Icon
Google Cloud LogoGoogle Cloud Icon

Storage

(TB/month)

$6

$26

$20

$23

Egress

($/GB)

Free*

$0.09

$0.08

$0.11

Backblaze B2 ReserveBackblaze B2 Reserve Icon
Amazon S3 LogoAmazon S3 Icon
Microsoft Azure LogoMicrosoft Azure Icon
Google Cloud LogoGoogle Cloud Icon

Storage

(250TB/year)

$19,500

$75,600

$52,395

$69,000

Egress

($/GB)

Free*

$0.09

$0.08

$0.11

Pay-as-you-go cloud storage cost and savings calculator

Select the amount of storage you need; use our cloud storage cost and savings calculator to estimate your storage requirements and costs. Smaller data files may be measured in megabytes (mb or megs) or gigabytes (gb or gigs). One terabyte (tb) equals 1,000 gigabytes. One gigabyte equals 1,000 megabytes.

B2 Reserve cloud storage cost and savings calculator

TB
TB
$25,000/yr
$25,000/yr
$25,000/yr
$25,000/yr
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0➔16PB
in 90 days
10x
more efficient than competition
$0
egress spend
We need to store an insane amount of data and download it to a few different GPU clusters around the world, and for it to not cost an insane amount of money. That’s why we chose Backblaze.

Dean Leitersdorf, Co-Founder and CEO, Decart

Learn how Decart trains its AI models with Backblaze

Why AI teams choose Backblaze B2

Battle-tested AI training performance

Our AI customers have rigorously tested B2. In their own words: “B2 was literally the only technical thing we used in training these models that didn’t crash the first time we tried it.” - Decart

Read the case study.

Predictable pricing–no calculator required

B2 makes object storage pricing easy to understand and predict to help avoid surprise charges. Pricing includes 3x free egress. Update datasets in real time without upload or early deletion fees.

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Up to 1Tbps throughput with B2 Overdrive

Unlock terabit speed at exabyte scale for performance-critical AI applications that require dedicated storage vaults and networking resources–plus all-inclusive free egress and API transactions.

Learn more.

Direct-to-expert technical support

Skip ticket queues and endless escalations. Backblaze’s human-powered support team of storage specialists provide technical expertise when you need it most.

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More Than 500,000 Customers Trust Backblaze

More than 500,000 Customers Trust Backblaze

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Assisted data migration available

Backblaze’s Universal Data Migration service is here to help you quickly and securely move large datasets into B2 Cloud Storage from all sources. Plus, we'll help cover migration costs with qualifying commitments.

Public Clouds and Cloud Drives

Server, NAS, and SAN

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FAQ

How does Backblaze B2 support AI/ML projects?

Backblaze B2 offers high-performance, S3-compatible cloud storage designed for machine learning and high-performance computing (HPC) workflows. It keeps training sets, model checkpoints, and inference data always accessible, helping you iterate faster without spiraling costs.

Can I switch between GPU compute providers without incurring high costs?

Yes. With Backblaze B2, you’re free to pair your data with any HPC or GPU provider that meets your needs. Thanks to our egress-friendly model, shifting workloads between different compute environments won’t lead to unexpected fees.

Can Backblaze B2 handle the large-scale data requirements of AI/ML and HPC workloads?

Absolutely. B2 Cloud Storage is built for substantial datasets in AI, ML, and HPC contexts—ideal for hosting your training data, versioned models, and archival datasets. While compute-intensive training typically runs on dedicated GPU clusters, Backblaze B2 reliably stores the inputs and outputs that power them.

Is Backblaze B2 easy to integrate with my existing tech stack?

Yes. Our Technology Partners ensure seamless integration with popular ML and HPC tools. And, with full S3 API compatibility, you can plug Backblaze B2 into your current pipelines with minimal setup.

How does Backblaze B2 protect the security and privacy of my AI/ML data?

We employ industry-standard security measures, including two-factor authentication and server-side encryption (SSE), plus SOC-2 compliant data centers offering 11 nines of durability. You retain full control over your data—encryption keys remain yours, and no one else can access your stored information.

What types of applications are best suited for Backblaze B2?

Backblaze B2 excels in diverse scenarios like e-commerce, gaming, large-scale enterprise apps, and AI/ML workloads. Whether you’re training neural networks or running a high-throughput HPC pipeline, its scalable and cost-efficient architecture fits a range of performance needs.

What is the difference between B2 and B2 Overdrive for AI?

B2 Overdrive is built on the foundation of B2, but with additional networking capacity that can reach up to 1Tbps throughput. B2 Overdrive has designated storage and networking resources walled off from other Backblaze infrastructure to support maximum performance for performance-sensitive workloads.

How do I get started with Backblaze B2?

It's easy to get started with Backblaze B2. You can sign up for a free account and begin your own full-featured proof of concept (PoC) today. Our team, including Backblaze solution engineers, can also help you explore the features and benefits of B2 Cloud Storage if that’s helpful.