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SemiAnalysis

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Architects' Tech Alliance
Architects' Tech Alliance
Oct 15, 2026 · Industry Insights

China's AI Data Center Boom: 24 GW Capacity, 12-Month Builds, and Five Giants' Divergent Strategies

SemiAnalysis's building-level survey of 1,000+ Chinese data centers reveals 24 GW of live IT capacity—second only to the U.S.—debunking vacancy myths by showing traditional retail space is empty while AI-grade wholesale power is scarce, and details how three construction modes deliver 100 MW campuses in 12 months and how ByteDance, Alibaba, Tencent, Baidu, and Huawei pursue sharply different compute strategies.

AI infrastructureAlibabaByteDance
0 likes · 8 min read
China's AI Data Center Boom: 24 GW Capacity, 12-Month Builds, and Five Giants' Divergent Strategies
Old Zhang's AI Learning
Old Zhang's AI Learning
Oct 6, 2026 · Industry Insights

Codex Declines: SemiAnalysis Reveals Claude Opus 5.5 Delivers 5x Value Over OpenAI

The article analyzes OpenAI's Codex decline, citing a SemiAnalysis report showing Anthropic's Claude Opus 5.5 provides over 5x more API value per dollar than OpenAI, with benchmarks comparing GPT-6.1 Sol, Gemini 3.8 Flash, and Claude Opus 5.5 on throughput and task completion, explaining how slow models disrupt developer flow.

AI coding assistantsClaude Opus 5.5Codex
0 likes · 11 min read
Codex Declines: SemiAnalysis Reveals Claude Opus 5.5 Delivers 5x Value Over OpenAI