What's the cheapest S3 alternative in 2026?

For raw storage cost: IDrive e2 and Storj tie at $0.004/GB/month ($4/TB). For egress-heavy workloads: Cloudflare R2 at $0.015/GB storage with zero egress fees. For backup with low-egress access: Backblaze B2 at $0.006/GB (with Cloudflare integration) is competitive. For high-volume backup with predictable egress: Wasabi at $0.0099/GB if your egress fits the 1:1 ratio policy. AWS S3 at $0.023/GB + $0.09/GB egress is 3-10x more expensive than all of these for typical workloads.

Cloudflare R2 vs Backblaze B2 - which is cheaper?

Depends on access pattern. B2 has cheaper storage ($0.006/GB with Cloudflare) but charges per-API-call rates that add up on high-request hot workloads. R2 has slightly higher storage ($0.015/GB) but zero egress and competitive per-class request rates. For cold backup with infrequent access: B2 wins. For hot serving (media CDN, AI training data, file downloads): R2 wins. Both pair well together for tiered storage.

Is Wasabi really cheaper than S3?

Yes, but with caveats. Wasabi storage is $0.0099/GB/month flat with no egress fees and no API charges. The catch: 90-day minimum retention policy (you pay for at least 90 days on every object, even if deleted earlier) and a 'reasonable use' policy that caps monthly egress at your stored volume. For workloads with high data churn (temp files, processing pipelines), the 90-day minimum can double effective costs. For workloads where egress exceeds stored volume monthly (CDN serving), the egress cap bites. Best fit: write-once-read-occasionally backups.

What is Storj and is it production-ready?

Storj is decentralized object storage at $0.004/GB/month with end-to-end encryption. Data is sharded across 30,000+ nodes in 100+ countries - no single point of failure. Egress is $0.007/GB (not free, unlike R2). S3-compatible API. Production maturity: yes, used by enterprises, but ecosystem is smaller than AWS/R2/B2 - fewer integrations, fewer Stack Overflow answers. Right for: privacy-conscious storage, redundancy-critical archives, EU GDPR compliance via geographic distribution. Not right for: teams that need broad ecosystem support.

What about self-hosting MinIO?

MinIO is an open-source S3-compatible object storage server. Self-hosted on commodity hardware, raw cost drops to $0.002-0.004/GB at >70% utilization. The hidden cost: operations. A 3-node MinIO cluster needs disk replacements (~1 drive failure/year per 24-drive server), OS patching, security updates, monitoring, capacity planning. Realistic added cost is 0.25-0.5 FTE engineering time. Right for: teams with >100TB sustained storage, on-prem requirements, regulatory needs. Wrong for: small teams who'd rather pay $0.006/GB to skip the operational overhead.

Should I migrate from S3 to an alternative?

Yes if your S3 bill is meaningful and egress is a significant component. Check three things: (1) Storage volume - at 1TB+ stored, switching saves $20-40/month. (2) Egress ratio - if egress is >30% of your S3 spend, R2 saves the most. If egress is <10%, the savings shrink. (3) Access patterns - hot serving favors R2, cold backup favors B2 / Wasabi. Migration tools (Cloudflare Super Slurper, rclone, awscli sync) make moving data straightforward. Most apps complete migration in a week.

S3 Alternatives 2026: 8 Cheaper Object Storage Options

Last updated: May 2026

The cheapest S3 alternatives in May 2026 are IDrive e2 and Storj at $0.004/GB/month for raw storage, Backblaze B2 at $0.006/GB (with Cloudflare egress free), Cloudflare R2 at $0.015/GB with zero egress fees, Wasabi at $0.0099/GB flat with caveats, and STRG at $0.0068/GB with egress and API requests included. AWS S3 at $0.023/GB storage + $0.09/GB egress is 3-10x more expensive than every option here for typical workloads. This guide compares the eight real S3 alternatives - their per-GB cost, egress policies, gotchas, and which one actually fits which workload.

For Cloudflare R2 vs S3 head-to-head, see R2 vs S3. For storage architecture in broader context, see Cheap Dedicated Server.

S3 alternatives at a glance (May 2026)

Provider	Storage $/GB/mo	Egress	API compat	Best for
AWS S3 (baseline)	$0.023	$0.09/GB	S3 (reference)	AWS lock-in, advanced features
Cloudflare R2	$0.015	$0	S3-compatible (core)	Egress-heavy, hot serving
Backblaze B2	$0.006 (w/ Cloudflare)	$0.01/GB (free with CF)	S3-compatible	Cold backup, low-egress
Wasabi	$0.0099	$0 (with 1:1 ratio)	S3-compatible	Backup, write-once
IDrive e2	$0.004	Free up to 3x stored	S3-compatible	Cheapest raw storage
Storj	$0.004	$0.007/GB	S3-compatible	Decentralized, privacy
STRG	$0.0068	$0 (included)	S3-compatible	Flat all-in bill, EU or US region
DigitalOcean Spaces	$0.02 (with 250GB egress)	$0.01/GB above	S3-compatible	DO ecosystem teams
MinIO (self-host)	$0.002-0.004	Free (own bandwidth)	S3-compatible	High-volume on-prem

Real pricing example - 10 TB stored, 1 TB egress/month

Provider	Storage	Egress	API	Total
AWS S3	$235	$90	~$5	$330
Cloudflare R2	$153	$0	~$5	$158
Backblaze B2 (with CF)	$61	$0 (1TB < 3x10TB)	~$5	$66
Wasabi	$101	$0 (1TB ≤ 10TB stored)	$0	$101
IDrive e2	$40	$0 (1TB < 3x10TB)	$0	$40
Storj	$40	$7	$0	$47
STRG	$70	$0	$0	$70
DigitalOcean Spaces	$50	~$8 above 250GB	$0	$58

For this representative workload, IDrive e2 at $40/month is the cheapest, with Storj close behind at $47. AWS S3 at $330 is 8x more expensive than the cheapest option.

Cloudflare R2 - zero egress is the headline

R2's pitch: $0 egress, ever. No fair-use caps, no throttling at high ratios, no CDN partner requirements. Storage at $0.015/GB.

Where R2 wins big: any workload where egress > 30% of total cost. Media CDNs, AI training data served to cloud GPUs, file downloads, static site assets, public datasets.

Where R2 doesn't matter: low-egress workloads (analytics archives, daily backups). The egress savings are marginal when egress is rare; storage cost dominates and B2 / IDrive e2 / Storj are cheaper.

See R2 vs S3 for the deep comparison.

Backblaze B2 - cheapest backup play

B2 storage is $0.005-$0.006/GB/month. Egress to Cloudflare is free (via the Bandwidth Alliance). Egress elsewhere is $0.01/GB.

Where B2 wins: bulk backup, archival, infrequently-accessed cold storage. Combine with Cloudflare CDN for free egress and you have a near-perfect cheap-backup architecture.

Where B2 loses: hot serving with many small requests - B2's per-API rates add up. For frequent reads, R2's per-class request pricing is more favorable.

Wasabi - flat-rate with 90-day catch

Wasabi is $0.0099/GB/month flat, no egress fees, no API charges. Two policy catches:

90-day minimum retention. Every object is billed for at least 90 days, even if deleted earlier. For high-churn data (caches, temp files), effective cost can be 2-3x the headline rate.
Reasonable use egress. Monthly egress can't exceed stored volume. For CDN workloads with egress 10x stored, Wasabi will throttle or charge extra.

Where Wasabi wins: write-once-read-occasionally compliance archives, long-term backups, audit logs. The flat rate is easy to budget; the policies don't bite for these workloads.

Where Wasabi loses: anything with frequent deletions or high egress.

IDrive e2 - cheapest raw storage

IDrive e2 is $0.004/GB/month with free egress up to 3x your stored data. S3-compatible API.

Trade-offs: No storage classes (everything is hot tier). No lifecycle transitions to cheaper archive. No customer-managed key encryption (CMK) as of early 2026.

Where e2 wins: simple bulk storage where you want the lowest per-GB rate and don't need advanced features.

Where e2 loses: if you need Glacier-style archive transitions, CMK, or any S3 enterprise feature.

Storj - decentralized at $0.004/GB

Storj distributes data across 30,000+ nodes in 100+ countries via cryptographic sharding. End-to-end encryption is default. S3-compatible API.

Pricing: $0.004/GB storage + $0.007/GB egress.

Where Storj wins: privacy-conscious workloads (data is sharded so no node sees a full object), redundancy-critical archives (no single point of failure), and GDPR-style data residency questions (data isn't physically in any one country).

Where Storj loses: smaller ecosystem than R2 / B2. Fewer SaaS integrations, fewer recipes online, fewer Stack Overflow answers.

STRG - one price, egress and requests included

STRG charges $6.80/TB/month (about $0.0068/GB) and that is the whole bill: all egress and all standard S3 API requests are included. No retrieval fees, no minimum storage duration, no minimum commitment. The first 10 GB per account are free.

Buckets live in one of two regions: EU-Central (Amsterdam, eu-central-1) or US-East (Reston, Virginia, us-east-1), with optional cross-region replication. It supports Object Lock for immutable retention and ships an MCP server, so AI agents such as Claude or Cursor can manage buckets with scoped permissions.

Where STRG wins: workloads where you want one predictable number - storage, reads and downloads on a single rate, with no 90-day trap like Wasabi and no published egress cap. Teams that need an EU region.

Where STRG loses: raw storage is above IDrive e2 and Storj ($0.004/GB), and it is a young provider with a much smaller ecosystem than R2 or B2.

DigitalOcean Spaces - for DO ecosystem teams

Spaces at $5/month for 250 GB storage + 1 TB egress. Above quota: $0.02/GB storage, $0.01/GB egress.

Where Spaces wins: teams already on DigitalOcean. Single bill, same dashboard, integration with DO infrastructure.

Where Spaces loses: raw per-GB cost. Cheaper to use R2 / B2 / e2 if you can tolerate the cross-cloud setup.

MinIO - self-host for max savings

MinIO is open-source S3-compatible storage you run on your own hardware (commodity servers, dedicated racks, even a home lab).

Cost: $0.002-$0.004/GB raw at 70%+ utilization. Below that, fixed hardware costs dominate.

Hidden costs: operations. Realistic:

Disk failures (~1/year per 24-drive server).
OS patching, security updates.
Capacity planning, hardware refresh.
Monitoring, alerting.
0.25-0.5 FTE engineering time amortized.

Where MinIO wins: >100 TB sustained storage, on-prem regulatory requirements, full data sovereignty, environments where you already have ops capacity.

Where MinIO loses: small teams. Paying B2's $0.006/GB to skip ops headache is almost always the right call below 50 TB.

Migration patterns

Most teams stitch together multiple providers for tiered storage:

Hot serving / CDN: Cloudflare R2 (zero egress).
Daily backup / point-in-time recovery: Backblaze B2 (cheap, free egress to Cloudflare).
Long-term archive: IDrive e2 or Storj (cheapest raw).
Compliance / immutability: AWS S3 with Object Lock (the one feature alternatives don't have).

Migration tools:

Cloudflare Super Slurper: free, one-time migration from S3 to R2.
rclone: open-source, S3-compatible transfers between any pair.
aws s3 sync: for AWS-to-AWS-compatible moves.
rsync over s3fs / mc (MinIO Client): for MinIO endpoints.

Most apps complete migration in 1-2 days of engineering work for typical data volumes (under 10 TB).

When NOT to migrate from S3

Object Lock compliance. WORM (Write-Once-Read-Many) for SEC 17a-4 or HIPAA. Only S3 has it.
Glacier / Deep Archive tier. Sub-cent/GB cold storage. Only S3 has it.
S3 Batch Operations. Operating on billions of objects. Only S3.
Intelligent-Tiering. Automatic class transitions. Only S3.
Deep AWS integration. Lambda triggers, Glue catalog, Athena, SageMaker, RDS - all of these speak S3 natively.

Common mistakes when picking S3 alternative

Optimizing storage without measuring egress. Cheap storage + expensive egress = no savings.
Ignoring 90-day retention on Wasabi. Cost-modeling without this misses 30-200% overruns on high-churn workloads.
Self-hosting MinIO at small scale. The ops cost dominates below 50 TB.
Skipping the dual-write phase. Big-bang migrations break things.
Forgetting Object Lock for compliance. If your auditor needs WORM, you stay on S3 (or pay for a separate compliance vault).

Quick decision tree

Egress >30% of bill, high read volume: Cloudflare R2.
Daily backups, low egress: Backblaze B2 + Cloudflare.
Lowest raw $/GB, basic features: IDrive e2 or Storj.
Write-once archive, predictable egress: Wasabi.
One flat price with egress and requests included: STRG.
DigitalOcean ecosystem: Spaces.
>100 TB on-prem with ops capacity: MinIO.
Need Object Lock / Glacier / advanced AWS features: AWS S3.