Amazon (AMZN.O) is making its largest external investment in its 30-year history, hoping to gain an advantage in the artificial intelligence competition. The tech giant stated that it will invest an additional $2.75 billion to support the AI startup company, Anthropic, whose Foundation model and chatbot, Claude, can compete with OpenAI and ChatGPT.The two companies announced an initial investment of $1.25 billion in September, with Amazon stating that it would invest up to $4 billion. Wednesday's news marks Amazon's second funding offer. Anthropic previously launched its latest AI model, Claude 3, which the company claims is the fastest and most powerful AI model to date.