.OpenAI's Sora artificial intelligence tool allows consumers to produce AI-generated videos from text-based inputs.Costfoto|Nurphoto|Getty ImagesOpenAI CFO Sarah Friar is aiming to assure its own investors that the highly valued artificial intelligence start-up is actually still in a strong posture as well as is poised to close a significant backing sphere soon, in spite of shedding leading skill this week.In an e-mail to OpenAI's investors seen through CNBC, Friar attended to the parting of Main Innovation Officer Mira Murati, who revealed her departure on Wednesday. Later on that time, Sam Altman claimed two top analysis execs, Bob McGrew as well as Barret Zoph, were additionally leaving." I wanted to directly connect following the updates of Mira's parting from OpenAI," Friar filled in the letter, which was watched by CNBC. "While leadership improvements are actually never very easy, I desire to ensure you have the total situation." Friar incorporated that, "Our team are actually extremely proud of every little thing she's aided create," and pointed out the San Francisco-based firm still possesses a "proficient management bench" to compete.OpenAI, which is actually backed through Microsoft as well as lately partnered with Apple on its own AI for iPhones, resides in the midst of closing a $6.5 billion funding around, which ought to value the business at roughly $150 billion, according to resources knowledgeable about the concern. Thrive Resources is actually leading the round, and also plans to invest $1 billion, according to sources.Friar pointed out in the email that the backing round was oversubscribed and also will nearby next full week. She mentioned the group intends to hold a series of telephone calls with clients to offer the group to essential innovators from product and analysis teams." Together, our team stay laser-focused on carrying artificial intelligence to every person and also building sustainable revenue versions that feed our functions and deliver market value to our investors and staff members," Friar created. The business is "delighted for you to become along with us as our experts enter our following section," she wrote.OpenAI declined to comment on the email.Murati's variation comes after six and also a half years at the firm. She quickly acted as interim CEO last year after the panel of directors abruptly fired up Altman. When Altman was actually promptly restored, Murati went back to the job of CTO.Sarah Friar has been called OpenAI CFOAnjali Sundaram|CNBCThe business was currently handling the loss of key managers. Co-founder John Schulman and also safety and security main Jan Leike entrusted to sign up with rivalrous Anthropic. Co-founder Ilya Sutskever delegated to begin one more artificial intelligence company, while one more owner, Greg Brockman, gets on a leave of absence.Friar stated Smudge Chen are going to step into the duty of of senior vice head of state of study, and forerunners like Kevin Weil, who participated in coming from Meta, and also Srinivas Narayanan are the "best folks to always keep pressing the boundaries of innovation." Friar was previously chief executive officer of Nextdoor, and also prior to that CFO at Block, in the past Square.Also on Thursday, at an all-hands appointment, Altman refuted that there are actually plans for him to acquire a "big equity concern" in the company, calling reports of such a growth "simply not accurate," according to an individual who resided in attendance.Altman and also Friar both mentioned at the conference, carried out through video clip, that clients have actually elevated worries regarding Altman not possessing equity in the company that he co-founded practically nine years back, claimed the person, who talked to not to become named because the party was actually just for employees.WATCH: Sam Altman's best representants leave.