U.S. tech firm OpenAI is in discussions with investors about a possible stock sale, according to media reports, as the artificial intelligence (AI) startup seeks to sell shares at a valuation of $80 billion to $90 billion, a valuation that nearly triples that of earlier this year.。OpenAI told investors it expects the company's revenue to reach $1 billion this year and billions more next year.。As the developer of the chatbot ChatGPT, OpenAI's main revenue stream is to charge individuals to provide them with a more powerful ChatGPT and to license the use of large language models to enterprises.。The sale of OpenAI shares is expected to take place as employees sell their holdings, rather than the company issuing new shares to raise additional capital, according to people familiar with the matter.。OpenAI representatives have started pitching the deal to investors, though the terms could change.。A valuation of $80 billion or more would make OpenAI one of the highest-valued startups in the world, behind ByteDance and Elon Musk's SpaceX.。