#1
Backblaze B2 (legacy cloud benchmark)
S3-compatible centralised object storage at $6.95/TB/mo with free egress up to 3x stored volume and no minimums.
from $6.95 per TB/mo
Sia alternatives
The top-scoring storage providers in our database as alternatives to Sia. Same criteria, live values, honest unknowns.
Short answer: Backblaze B2 (legacy cloud benchmark) is the strongest alternative right now (8.6/10).
#2
Wasabi Hot Cloud Storage (legacy cloud benchmark)
Single-tier S3-compatible object storage at $7.99/TB/mo with no egress or API fees, a 1 TB monthly minimum and 90-day minimum retention.
from $7.99 per TB/mo min $7.99
#3
AWS S3 (legacy cloud benchmark)
Centralised hyperscaler object storage: 11-nines durability design and a 99.9% SLA, but ~$23/TB plus $0.09/GB egress and fiat-only payment.
from $23.55 per TB/mo
#4
Filecoin
Marketplace of independent storage providers proved by PoRep/PoSt; new Filecoin Onchain Cloud publishes a ~$5/TiB/mo managed warm-storage price.
no KYC provable
from $2.50 per TiB/mo per copy
#5
Storj
S3-compatible distributed object storage at $7/TB/mo with $7/TB egress and no API fees; operating under Chapter 11 after the Inveniam acquisition.
no KYC
from $7 per TB/mo min $5
#6
Walrus (Mysten Labs)
Sui-based decentralized blob storage with fixed USD pricing ($0.023/GB/mo on encoded size), paid in WAL plus SUI gas.
no KYC provable open source self-custody
from $0.023 per GB/mo
How to compare them
Compare only in the same unit (per TH/s/day, per GPU/hr, per TB/mo), check the minimum and the proof column, and read what "legit" does and does not mean on the Sia legit page. Full method: how we score.
FAQ
What is the best alternative to Sia?
Backblaze B2 (legacy cloud benchmark) is our top-scoring storage alternative right now (8.6/10). Compare the full table before deciding.
Why would I switch from Sia?
Common reasons: a better price in the same unit, a lighter KYC policy, published proof of hashrate/compute, or a provider that lets you exit instead of locking you into a long contract.
Are these alternatives safer than Sia?
Not automatically. Every provider is scored on the same criteria - check the proof and KYC columns and start small with any of them.