Artificial intelligence startup OpenAI is reportedly in talks with venture capital firms to raise the largest injection of fresh capital in more than a year, which could see the firm valued at over $100 billion. Venture capital firm Thrive Capital will invest $1 billion in the funding round and tech giant Microsoft is also expected to front up capital, according to an Aug. 28 Wall Street Journal report that cited sources familiar with the matter. The funding round would be the most significant injection of new capital for the AI firm since Microsoft invested $10 billion in the startup in Janua…