Amazon completes $4B Anthropic investment to advance generative AI About AmazonAmazon invests additional $2.75B into AI startup Anthropic Yahoo FinanceAmazon pours additional $2.75bn into AI startup Anthropic The GuardianBriefing: Amazon Confirms $4 Billion Investment in Anthropic The InformationAmazon spends $2.75 billion on AI startup Anthropic in its largest venture investment yet CNBC