Baidu's Ad Business Is Crumbling Faster Than AI Can Fill the Gap — Can a Fifth Straight Revenue Drop Still Be Called a Transition?

Shares of Baidu plunged 8.1% to $95.71 on Tuesday after the Chinese search giant reported second-quarter results that missed on both the top and bottom lines, raising fresh doubts about whether its expensive pivot to artificial intelligence can outrun the collapse of its advertising cash cow.

- Advertising Fell Off a Cliff, and the Macro Isn't Helping -

Online marketing revenue dropped 19% year-over-year to RMB 13.1 billion , accelerating from a 22% decline in Q1 . A prolonged downturn in China's property sector and weak consumer spending have led businesses to cut marketing budgets . For shareholders, this is the engine that still generates the majority of operating cash — and it is shrinking at a pace that no amount of AI enthusiasm can mask in a single quarter.

- AI Cloud Is Growing, But Not Fast Enough to Close the Hole -

Core AI-powered business revenue rose 25% to RMB 12.5 billion, while AI Cloud infrastructure revenue surged 50% year-over-year, with GPU-related cloud computing up 283% . Impressive in isolation — but total revenue still fell 4% to RMB 31.33 billion, missing the RMB 31.96 billion consensus. This was the fifth straight quarter of declining revenue . The AI business would need to roughly double to replace what advertising is losing each year.

- Profits Cratered as AI Spending Soared -

Net income plunged 68% to RMB 2.32 billion after the company tripled investments in AI data centers and computing . Adjusted earnings came in at $7.15 per share versus the $11.05 Wall Street expected — a 35% miss. The net margin compressed to just 7%, down from the already thin 11% last quarter. That trajectory tells investors the AI transition is getting more expensive, not less.

- Baidu Ranks Fifth in China's AI Cloud — Behind Better-Funded Rivals -

Alibaba captured 35.8% of China's AI cloud market, with ByteDance, Huawei, and Tencent all ahead of Baidu's 6.1% share . Alibaba plans to spend over RMB 380 billion on AI and cloud over three years; Tencent aims to double its AI spending in 2026 . Baidu is being outspent by rivals with broader ecosystems, meaning its cloud gains may face a ceiling just as advertising hits the floor.

With RMB 283 billion in cash and the stock now down 20% year-to-date, Baidu is not in crisis — but five consecutive revenue declines and a ballooning AI cost base demand proof, not promises, that the new business can sustain the old one's margins.