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The GPU cloud provider remains the only company to hold Platinum status across all three evaluation cycles, reinforcing its dominance in the AI infrastructure market.
CoreWeave has secured SemiAnalysis’ top-tier Platinum ClusterMAX rating for the third straight evaluation cycle, a feat no other cloud provider has managed since the benchmark launched in March 2025. The latest ClusterMAX 3.0 report, released on September 23, 2026, evaluated 323 providers and conducted over 200 end-user interviews to arrive at its rankings.
What ClusterMAX actually measures #
SemiAnalysis introduced ClusterMAX as the first benchmark focused on real-world performance for enterprise GPU cloud services. The evaluation spans ten critical categories, including security, orchestration, storage, and networking performance.
Of the 323 providers evaluated in this cycle, 77 received thorough in-depth assessments.
CoreWeave’s standout metric: a 96% goodput rating. For context, “goodput” measures the actual useful data throughput in a system, stripping out protocol overhead and retransmissions. The industry average sits around 90%, which means CoreWeave is extracting meaningfully more productive compute from its infrastructure than most competitors.
The company currently operates more than 10,000 H100 clusters.
The neocloud advantage #
CoreWeave occupies a category sometimes called the “neocloud” sector, a group of cloud providers that built their infrastructure specifically for AI and high-performance computing rather than retrofitting general-purpose cloud architecture. This distinguishes it from the hyperscale giants like AWS, Azure, and Google Cloud.
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Dylan Patel, founder of SemiAnalysis, has noted that CoreWeave “sets the bar for others to follow” and is the only provider that can consistently command premium pricing based on user feedback.
CoreWeave counts OpenAI, Jane Street, and NVIDIA among its notable users.
Competition is heating up #
One notable development in the ClusterMAX 3.0 cycle: Nebius entered the Platinum tier alongside CoreWeave. That’s the first time any provider has joined CoreWeave at the top since the benchmark began.
CoreWeave had sole Platinum status since the inaugural report in March 2025, maintained that through the 2.0 cycle in November 2025, and now, in the 3.0 cycle, at least one competitor has closed the gap enough to earn the same designation.
A 6-percentage-point gap in goodput between CoreWeave and the industry average might not sound dramatic, but at the scale of training frontier AI models, that difference translates into days of saved compute time and millions of dollars in efficiency gains.
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