Microsoft's Historic Stock Surge, OpenAI's Price Cuts, and Xiaomi's SUV Pre-Sales
Microsoft's market value surged by nearly $450 billion in a single day, while OpenAI slashed the API fees for its GPT-5.6 Luna and Terra models by 80%. Additionally, Xiaomi announced the pre-sale prices for its new Pengcheng N90 Max and N70 Max range-extended SUVs. The massive price cut by OpenAI intensifies the AI price war, directly targeting cost-efficient competitors like DeepSeek V4 Pro. Meanwhile, Microsoft's record-breaking valuation surge and Xiaomi's expansion into the SUV market highlight the rapid growth and fierce competition across the tech and automotive sectors. OpenAI's price adjustment does not affect the flagship GPT-5.6 Sol model, positioning the discounted Luna model as a highly competitive option with a 1.05-million-token context window. Xiaomi's Pengcheng N90 Max and N70 Max are priced at 299,900 RMB and 259,900 RMB respectively, featuring the new Kunlun architecture.
## BACKGROUND
OpenAI released its GPT-5.6 model family, including Sol, Terra, and Luna, in July 2026 to scale frontier intelligence. DeepSeek, a prominent Chinese AI competitor, had previously disrupted the market with highly cost-effective models like DeepSeek-R1 and the DeepSeek-V4 series, prompting US tech giants to lower API costs to remain competitive.