Amazon announced on Monday that it will invest up to $4 billion into Anthropic — the AI startup best known for its Claude chatbot and founded by siblings Dario and Daniela Amodei who used to work for OpenAI.

As part of the deal, Amazon will gain minority ownership of the company and has agreed to incorporate Anthropic’s technology into various products across its business, including the  Amazon Bedrock service for building AI applications. Anthropic will also use Amazon’s custom chips to build, train, and deploy its future AI foundation models, and has committed to using Amazon Web Services (AWS) as its primary cloud provider.

According to Reuters, Amazon has initially committed to a $1.25 billion investment, with an option to grow the investment by a further $2.75 billion. If it does reach that $4 billion total, Bloomberg reports that the deal will represent the largest known investment ever related to AWS, which is currently the world’s largest seller of on-demand computing power and data storage.

Google also has an interest in Anthropic, with a roughly 10 percent stake after making a $300 million investment in the AI startup earlier this year. According to Reuters, Anthropic is continuing its partnership with Google despite the new Amazon deal and is still planning to make its technology available via Google Cloud.