ChatGPT-parent OpenAI, a leading artificial intelligence startup, has finalized an agreement that permits its employees to sell their shares in the company. What Happened: This tender offer places the company’s valuation at $86 billion, ranking OpenAI as one of the most valuable tech startups worldwide, reported Bloomberg on Friday, citing a person familiar with the matter. The deal was reportedly led by Thrive Capital, the venture capital outfit steered by Josh Kushner. Both OpenAI and Thrive Capital have opted not to comment on the proceedings. The share sale was initially slated for last ye…