PANews reported on November 22 that according to Tonghuashun Finance, Amazon and Anthropic have deepened their cooperation and will invest an additional $4 billion in each other. In September of this year, artificial intelligence startup Anthropic is seeking a new round of financing with a valuation of up to $40 billion. Anthropic is a company founded in 2021 by former OpenAI executives, focusing on creating explainable, safe and controllable artificial intelligence systems. The company's flagship artificial intelligence model Claude runs on "Constitutional AI", an artificial intelligence model that uses predefined principles to guide its output to avoid some erroneous or discriminatory output reactions. Prior to this, Anthropic's largest investor was Amazon, which had invested in the company twice, participating in two rounds of financing, namely $1.25 billion in September 2023 and $2.75 billion in March this year.