US Stock Market Move | Alphabet Inc. Class C (GOOGL.US) rose nearly 6%. Gemini 3 Pro topped the "big model arena" LMArena leaderboard.

On Wednesday, Alphabet Inc. Class C (GOOGL.US) rose nearly 6%, to $300.91. On the news front, Alphabet Inc. Class C's latest large model Gemini 3 Pro topped the "Large Model Arena" LMArena rankings. According to the latest financial report data, AI has become an important engine of growth for Alphabet Inc. Class C. Alphabet Inc. Class C's cloud business revenue in the third quarter reached $15.2 billion, an increase of 33.5% year-on-year, with an operating profit margin of 23.7%. Revenue related to AI has reached a scale of "billions of dollars per quarter", with product revenue based on generative AI models growing by over 200% year-on-year, demonstrating strong momentum in commercializing AI. It is reported that Gemini 3 Pro set a new record in comprehensive assessment with an Elo score of 1501, showing improvements in multiple dimensions of performance: achieving 100% accuracy in code execution mode at the AIME 2025 American Mathematics Invitational, scoring 23.4% at the MathArena Apex math competition, far surpassing the generally low level of less than 2% for similar models. Its multimodal processing capabilities are particularly outstanding, with a score of 72.7% in screen screenshot understanding, double that of competitors, and a handwriting recognition error rate of only 0.56% for 18th-century manuscripts, approaching expert level. Analysis points out that with the release of Gemini 3, the competition between Alphabet Inc. Class C and OpenAI is escalating. Following the release of Gemini 3, OpenAI co-founder and CEO Sam Altman and xAI founder and CEO Elon Musk both sent congratulatory messages. Altman commented on the X (formerly Twitter) platform that "Gemini 3 looks pretty good," while Musk not only congratulated them but also wrote, "Looks like we need to hurry up and release Grok 4.20."