Every iteration of AI innovation faces the same challenge: data. Models are getting faster, more performant, and more compute-intensive, but the infrastructure that supports them hasn’t kept pace. Across clouds, regions and tiers, data remains fragmented, slow and expensive to move. AI teams are forced to duplicate datasets, deal with unpredictable output bills, and design brittle caching systems, all to keep their GPUs from idling. The result? Innovation is limited by storage systems that were never designed to meet the demands of AI.
At CoreWeave, we believe data mobility should be as dynamic as the AI workloads it powers. This conviction led us to build CoreWeave AI Object Storage, our industry-leading, fully managed storage service built specifically for AI. Powered by our Local Object Transport Accelerator (LOTA) technology, CoreWeave AI Object Storage eliminates the friction of moving data across regions, clouds, and tiers. It combines simplicity, scalability and transparency, providing throughput of up to 7 GB/s per GPU, zero fees (exit, entry or request)And automated, usage-based billing levels which has reduced costs for existing customers by over 75%. Whether you’re training, fine-tuning, or releasing models across global environments, CoreWeave AI Object Storage keeps your GPUs busy, your data accessible anywhere, and your innovation moving.
How CoreWeave AI Object Storage Delivers Maximum Performance for AI Workloads
CoreWeave AI Object Storage is a fully managed object storage service purpose-built to maximize throughput for AI workloads. Unlike general-purpose storage, it was designed to meet the unique requirements of AI, using a distributed architecture that separates compute from storage while preserving ultra-low latency data access. Data is distributed across GPU nodes, enabling highly parallelized reads and writes. This design allows it to deliver up to 7 GB/s per GPUunrivaled performance in the industry. With the ability to scale to hundreds of thousands of GPUs, enterprise-grade durability (11 nines), built-in observability with Prometheus and Grafana, and full S3 compatibility, CoreWeave AI Object Storage accelerates training, post-training, and reinforcement learning workflows of large-scale language models, reducing time and cost while enabling iteration and innovation faster.
CoreWeave AI Object Storage performance is optimized by Local Object Transport Accelerator (LOTA)a proxy service that runs on GPU cluster nodes, acting as an S3 endpoint and also creating a local cache on GPU node disks. While traditional storage often requires customers to create separate caching layers that add operational overhead and new points of failure, LOTA is a cutting-edge AI-specific caching technology built directly into the storage service. It intelligently organizes frequently accessed objects near the compute, across regions and clouds, ensuring that GPUs continually receive the data they need during training and fine-tuning. Thanks to LOTA, the unrivaled performance benefits of our peak flow scale linearly, even as AI workloads increase. While traditional object storage is limited to the Availability Zone or regional level, CoreWeave AI Object Storage maintains optimal performance across an unlimited number of GPU nodes.
Another key feature of CoreWeave AI Object Storage is its automated usage-based billing, which automatically assigns data to cheaper pricing tiers based on access frequency:
- Hot: viewed in the last 7 days
- Hot: viewed in the last 7 to 30 days
- Cold: not consulted for more than 30 days
This approach helps customers save time and money while maximizing the ROI of purpose-built storage. With our new transparent, usage-based billing tiers, CoreWeave AI Object Storage reduces storage costs for our existing customers by over 75% for typical AI workloads. Customers benefit from the flexibility to align storage costs with workload demands, without compromising the high performance they expect from CoreWeave AI Object Storage.
The benefits add up: maximum GPU utilization, simplified infrastructure, and predictable economics thanks to transparent pricing with no hidden fees. By combining performance innovations like LOTA with unmatched throughput and resiliency, CoreWeave AI Object Storage ensures that data never becomes a bottleneck, enabling AI teams to scale with confidence and accelerate every step of innovation.
Enhance CoreWeave AI Object Storage with Cross-Region and Multi-Cloud Flexibility
The latest features announced for CoreWeave AI Object Storage enable CoreWeave customers to use data anywhere across our regions, in other clouds, and on-premises. Until now, most organizations were forced to replicate datasets in each region where workloads run. This practice significantly increases costs while introducing the risk of data discrepancies. CoreWeave AI Object Storage eliminates this burden. Now a single dataset is seamlessly accessible from anywhere in the world with local disk performance wherever AI workloads run.
This capability is further enabled by CoreWeave’s multi-cloud network backbone, purpose-built for AI, which combines private interconnections, direct cloud peering, and a cross-region network capable of reaching up to 400 gigabits per second. Whether a workload is running in New York or London, developers can rely on the same high-throughput access profile without needing to design complex replication strategies or manage massive data sprawl.
The benefits of this flexibility are significant. Rather than balancing multiple inconsistent copies of data, teams can work from a single source of truth, ensuring integrity, reducing costs and simplifying workflows. For AI developers responsible for global deployments, this feature eliminates one of the most difficult challenges in infrastructure design: data portability. And because LOTA technology already enables acceleration across all CoreWeave regions, teams can benefit from peak performance no matter where their workload is. As LOTA acceleration expands to other cloud and on-premises environments (expected in early 2026), its peak throughput will be even more widely available. CoreWeave AI Object Storage datasets are accessible from third-party clouds with the same performance guarantees as in CoreWeave regions.
Cross-region and multi-cloud access marks a fundamental shift in AI storage. For years, data gravity and punitive egress fees dictated where workloads could run. With this update, our customers’ data becomes portable and truly multi-cloud. A model can be trained on CoreWeave and refined or deployed to another cloud without dataset replication or performance loss. Best of all, this portability is achieved with no exit, entry, or application fees, continuing CoreWeave’s commitment to transparent, user-friendly pricing.
For teams building the next frontier of AI, expanded data portability unlocks a whole new level of flexibility. Infrastructure can be designed based on performance, cost, and compliance considerations, without being dictated by storage limitations.
Deliver maximum performance
While global accessibility is essential, performance remains the ultimate benchmark for storage designed for AI. CoreWeave AI Object Storage continues to set the industry standard, delivering up to 7 GB/s throughput per GPU scalable across hundreds of thousands of GPUs, resulting in throughput far beyond the performance of conventional object storage. In practice, this fast throughput means that clusters containing hundreds of thousands of expensive GPUs remain fully utilized rather than idly waiting for data. Training cycles decrease, inference pipelines speed up, and overall efficiency improves dramatically.
Ensuring reliability and security
AI workloads also demand rock-solid reliability and robust security. CoreWeave AI Object Storage guarantees 99.9% uptime and is designed for eleven nine durability, ensuring data is always available and protected. Encryption at rest and in transit is standard, and authentication and policies with role-based access and SAML/SSO support enable seamless federation of identities across enterprises. These features are combined with observability through built-in Grafana dashboards and Prometheus endpoints, giving AI teams complete visibility into throughput, latency, cache efficiency, and error rates.
Powering the next frontier of AI
These latest enhancements to CoreWeave AI Object Storage represent a significant step forward in the evolution of AI infrastructure. Increased access (cross-region, multi-cloud, and on-premises) isn’t just a new feature. It is an architectural tool that redefines what is possible during large-scale construction. Combined with unmatched performance, industry-leading reliability, and proven validation by pioneers in the field, the latest CoreWeave AI Object Storage forms the foundation for the next era of AI innovation.
For AI developers tasked with bridging the gap between ambitious AI projects and practical infrastructure, CoreWeave AI Object Storage provides a clear path forward: faster time to market, lower total cost of ownership, and the confidence that storage will always keep pace with compute.
Accelerate your next breakthrough with object storage in the age of AI.
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