Backblaze (BLZE) Stock Soars 20% Following Massive $335M CoreWeave Partnership

Key Highlights

• Shares of Backblaze surged 20% Tuesday following the announcement of a $335 million, five-year partnership with CoreWeave
• The collaboration involves a multi-exabyte storage agreement where Backblaze will deliver capacity for CoreWeave’s managed infrastructure
• Backblaze will deploy HDD-based solutions to power performance tiers within CoreWeave AI Object Storage
• Current CoreWeave AI Object Storage users will gain immediate access to enhanced service tiers without any code modifications
• CoreWeave serves 9 of the 10 largest AI model providers globally

Backblaze (BLZE) shares experienced a significant 20% rally on Tuesday after the cloud storage provider unveiled a five-year, $335 million data storage partnership with CoreWeave (CRWV).

Backblaze, Inc., BLZE

The agreement is characterized as a multi-exabyte contract, indicating data volumes measuring in the millions of terabytes. Under the terms, Backblaze will deliver cost-effective storage capacity to power select components of CoreWeave’s managed infrastructure ecosystem.

At the heart of this collaboration lies HDD-based storage tiers integrated within CoreWeave AI Object Storage. Backblaze’s infrastructure will enhance data placement optimization across various performance tiers, allowing high-performance storage resources to remain dedicated to the most demanding AI computational tasks.

A significant advantage for current CoreWeave clients: users already leveraging CoreWeave AI Object Storage equipped with its patented LOTA distributed cache technology will immediately access newly available service tiers without requiring any code adjustments.

Partnership Scope and Infrastructure

The storage framework is engineered to accommodate diverse phases of AI development and deployment. This encompasses model training, inference operations, checkpointing processes, data preparation workflows, model output management, and retrieval-augmented generation (RAG) applications.

CoreWeave VP Nick Hoover highlighted Backblaze’s proven expertise in managing sophisticated HDD-based infrastructure at enterprise scale as a primary factor driving the partnership decision.

Backblaze currently supports over 100,000 customers across the globe and has engineered its platform specifically for large-scale, economically efficient storage solutions tailored to enterprise and data-heavy applications.

CoreWeave’s Market Standing

CoreWeave operates a comprehensive AI cloud platform encompassing infrastructure, technology frameworks, development tools, and managed services. The company serves a diverse clientele including prominent AI model developers, enterprise organizations, and academic research institutions.

Notably, CoreWeave counts 9 out of the 10 leading AI model providers among its customer base — a metric that underscores the substantial storage requirements this partnership aims to address.

CoreWeave (CRWV) stock experienced contrasting movement Tuesday, declining 5.65% during the trading session.

BLZE shares retreated 0.85% in after-hours trading following the initial rally, though the 20% intraday spike represented one of the stock’s most substantial single-session gains in recent history.

The five-year duration of this agreement extends through approximately 2031, establishing a stable long-term revenue pipeline for Backblaze.

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