On October 1, Alphabet rose 3.01% overnight, trading at $351.03/share, with turnover of $25.18 million. The stock was propelled by two major catalysts: the release of its next-generation AI model Gemini 4 Argon and the successful launch of its first TPU-equipped satellite.

CEO Sundar Pichai officially unveiled Gemini 4 Argon, which the company describes as its most advanced large language model to date, leading benchmarks in coding and cybersecurity tasks with output token limits expanded to the million-token level. The model is priced at $2 per million input tokens and $10 per million output tokens. Notably, Google DeepMind had previously indicated Gemini 4 was still in early post-training stages, making this formal release ahead of market expectations.

Simultaneously, Alphabet's Sun Catcher project achieved a milestone as its first prototype satellite launched aboard a SpaceX Falcon 9 Transporter-18 rideshare mission from Vandenberg Base. The satellite carries four proprietary Trillium TPU chips, marking the first time production-scale AI inference chips have entered low-Earth orbit for in-orbit validation. The mission aims to test TPU survivability under launch vibration, space radiation, and extreme temperature conditions, with a two-satellite laser inter-link communication test planned for 2027.

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