Exhibit 99.3

Sam Altman Transcript

| Sam Altman: | “AltC was formed out of excitement about the idea of bringing public market investors access to high quality hard tech companies. AltC raised $500 million of capital in July of 2021, and today we're excited to announce that we're partnering with Oklo. Oklo aims to provide clean, reliable, and affordable energy to a wide range of markets. I got interested in nuclear energy a long time ago, very fortunate to meet Jake back in 2013. Jake and Caroline went through the Y Combinator in 2014. I invested additionally and became chairman of the company in 2015. It's really been a pleasure to be involved over these last eight years. I think the two most important inputs to a really great future are abundant intelligence and abundant energy. The world has seen a lot of the progress we've made at OpenAI in in recent months, really although it's years that we've been working on it towards, towards abundant intelligence. But abundant energy is the other element of that. Energy is so important in so many things that we all do every day. And if we can bring the, the amount of cheap, clean, safe energy that the world has access to to new heights, that'll be a wonderful thing. The energy market is so massive and the need for energy is so acute that I'm excited to support many different projects pursuing this goal of abundant, cheap, safe, clean energy. So I think fusion and fission will play roles. Wind and solar will play roles. We're not gonna run out of market space here anytime soon. This is this is like a desperate need for as much energy as we can manufacture. Fission, I think, is one of the best ways to do this. It's been underexplored in recent years, but there's been a lot of technological development and Oklo has an approach, a technology and a business model that I think makes sense to do this at, at big scale now throughout the world. Oklo has a number of advantages that I believe make them best positioned to succeed in fission. First of all, the company has proven technology, which I think is always, you know, step one for any project like this. Second, the company has a first plant identified and a rich pipeline beyond that. And third, the company is making significant regulatory progress. I think they've got a unique technological approach that involves safety at a scale that we haven't seen from other systems before. This system is self-regulating, self-controlling, uses, natural forces to cool—it's really the first plant design that I've seen that that is really walkaway safe, and I think that's quite important. The business model makes a lot of sense. The ability to recycle fuel is very exciting and always I believe in strong founder led teams. But I'm probably most excited of all about the richness of the pipeline and how many people are excited to buy this technology and deploy it in the coming years. I believe that what Oklo is doing is one of our best shots to get out of the energy crisis and get into this world of energy abundance.”

Forward-Looking Statements

This communication includes “forward-looking statements” within the meaning of the “safe harbor” provisions of the United States Private Securities Litigation Reform Act of 1995. Forward-looking statements may be identified by the use of words such as “estimate,” “plan,” “project,” “forecast,” “intend,” “will,” “expect,” “anticipate,” “believe,” “seek,” “target,” “continue,” “could,” “may,” “might,” “possible,” “potential,” “predict” or other similar expressions that predict or indicate future events or trends or that are not statements of historical matters. We have based these forward-looking statements on our current expectations and projections about future events. These forward-looking statements include, but are not limited to, statements regarding estimates and forecasts of financial and operational metrics; estimates and projections regarding future manufacturing capacity and plant performance; estimates and projections of market opportunity and market share; estimates and projections of adjacent energy sector opportunities; Oklo Inc.’s (“Oklo”) projected commercialization timeline; Oklo’s ability to demonstrate scientific and engineering feasibility of its technologies; Oklo’s ability to attract, retain, and expand its future customer base; Oklo’s ability to timely and effectively meet construction timelines and scale its production and manufacturing processes; Oklo’s ability to develop products and services and bring them to market in a timely manner; Oklo’s ability to achieve a competitive levelized cost of electricity; Oklo’s ability to compete successfully with fission energy products and solutions offered by other companies, including fusion, as well as with other sources of clean energy; Oklo’s expectations concerning relationships with strategic partners, suppliers, governments, regulatory bodies and other third parties; Oklo’s ability to maintain, protect, and enhance its intellectual property; future acquisitions, ventures or investments in companies or products, services, or technologies; Oklo’s ability to attract and retain qualified employees; development of favorable regulations and government incentives affecting the markets in which Oklo operates; Oklo’s expectations regarding regulatory framework development; the potential for and timing of receipt of a license to operate nuclear facilities from the U.S. Nuclear Regulatory Commission; the ability to achieve the results illustrated in the unit economics and the potential benefits of the proposed transaction and expectations related to the terms and timing of the proposed transaction. These statements are based on various assumptions, whether or not identified in this communication, and on the current expectations of Oklo’s and AltC Acquisition Corp.’s (“AltC”) management and are not predictions of actual performance. These forward-looking statements are provided for illustrative purposes only and are not intended to serve as and must not be relied on by any investor as, a guarantee, an assurance, a prediction or a definitive statement of fact or probability. Actual events and circumstances are difficult or impossible to predict and will differ from assumptions. Many actual events and circumstances are beyond the control of Oklo and AltC. These forward-looking statements are subject to known and unknown risks, uncertainties and assumptions about us that may cause our actual results, levels of activity, performance or achievements to be materially different from any future results, levels of activity, performance or achievements expressed or implied by such forward-looking statements. Such risks and uncertainties include changes in domestic and foreign business, market, financial, political and legal conditions; the inability of the parties to successfully or timely consummate the proposed transaction, including the risk that any required regulatory approvals are not obtained, are delayed or are subject to unanticipated conditions that could adversely affect the combined company or the expected benefits of the proposed transaction or that the approval of the shareholders of AltC or Oklo is not obtained; the outcome of any legal proceedings that may be instituted against Oklo or AltC following announcement of the proposed transaction; failure to realize the anticipated benefits of the proposed transaction; risks relating to the uncertainty of the projected financial information with respect to Oklo; the effects of competition; changes in applicable laws or regulations; the ability of Oklo to manage expenses and recruit and retain key employees; the ability of AltC or the combined company to issue equity or equity-linked securities in connection with the proposed transaction or in the future; the outcome of any potential litigation, government and regulatory proceedings, investigations and inquiries; and the impact of the global COVID-19 pandemic on Oklo, AltC, the combined company’s projected results of operations, financial performance or other financial metrics, or on any of the foregoing risks; those factors discussed in AltC’s Quarterly Reports filed by AltC with the U.S. Securities and Exchange Commission (“SEC”) on Form 10-Q and the Annual Reports filed by AltC with the SEC on Form 10-K, in each case, under the heading “Risk Factors,” as well as the factors summarized in this communication under “Risk Factors” and other documents filed, or to be filed, with the SEC by AltC. If any of these risks materialize or our assumptions prove incorrect, actual results could differ materially from the results implied by these forward-looking statements. There may be additional risks that neither Oklo nor AltC presently know or that Oklo and AltC currently believe are immaterial that could also cause actual results to differ from those contained in the forward-looking statements. In addition, forward-looking statements reflect Oklo’s and AltC’s expectations, plans or forecasts of future events and views as of the date of this communication. Oklo and AltC anticipate that subsequent events and developments will cause Oklo’s and AltC’s assessments to change. However, while Oklo and AltC may elect to update these forward- looking statements at some point in the future, Oklo and AltC specifically disclaim any obligation to do so. These forward-looking statements should not be relied upon as representing Oklo’s and AltC’s assessments as of any date subsequent to the date of this communication. Accordingly, undue reliance should not be placed upon the forward-looking statements. An investment in AltC is not an investment in any of our founders' or sponsors' past investments or companies or any funds affiliated with any of the foregoing. The historical results of these investments are not indicative of future performance of AltC, which may differ materially from the performance of the founders or sponsors past investments, companies or affiliated funds.

Additional Information About the Proposed Transaction and Where to Find It

The proposed transaction will be submitted to shareholders of AltC for their consideration. AltC intends to file a registration statement on Form S-4 (the “Registration Statement”) with the SEC, which will include preliminary and definitive proxy statements to be distributed to AltC’s shareholders in connection with AltC’s solicitation for proxies for the vote by AltC’s shareholders in connection with the proposed transaction and other matters to be described in the Registration Statement, as well as the prospectus relating to the offer of the securities to be issued to Oklo’s shareholders in connection with the completion of the proposed transaction. After the Registration Statement has been filed and declared effective, AltC will mail a definitive proxy statement/prospectus/consent solicitation statement and other relevant documents to its shareholders as of the record date established for voting on the proposed transaction. AltC’s shareholders and other interested persons are advised to read, once available, the preliminary proxy statement/prospectus/consent solicitation statement and any amendments thereto and, once available, the definitive proxy statement/prospectus/consent solicitation statement, in connection with AltC’s solicitation of proxies for its special meeting of shareholders to be held to approve, among other things, the proposed transaction, as well as other documents filed with the SEC by AltC in connection with the proposed transaction, as these documents will contain important information about AltC, Oklo and the proposed transaction. Shareholders may obtain a copy of the preliminary or definitive proxy statement/prospectus/consent solicitation statement, once available, as well as other documents filed by AltC with the SEC, without charge, at the SEC’s website located at www.sec.gov or by directing a written request to AltC Acquisition Corp., 640 Fifth Avenue, 12th Floor, New York, NY 10019.

Participants in the Solicitation

AltC, Oklo and certain of their respective directors, executive officers and other members of management and employees may, under SEC rules, be deemed to be participants in the solicitation of proxies from AltC’s shareholders in connection with the proposed transaction. Information regarding the persons who may, under SEC rules, be deemed participants in the solicitation of AltC’s shareholders in connection with the proposed transaction will be set forth in AltC’s proxy statement/prospectus/consent solicitation statement when it is filed with the SEC. You can find more information about AltC’s directors and executive officers in AltC’s final prospectus filed with the SEC on July 7, 2021 and in the Annual Reports filed by AltC with the SEC on Form 10-K. Additional information regarding the participants in the proxy solicitation and a description of their direct and indirect interests will be included in the proxy statement/prospectus/consent solicitation statement when it becomes available. Shareholders, potential investors and other interested persons should read the proxy statement/prospectus/consent solicitation statement carefully when it becomes available before making any voting or investment decisions. You may obtain free copies of these documents from the sources indicated above.

No Offer or Solicitation

This communication does not constitute an offer to sell or the solicitation of an offer to buy any securities, or a solicitation of any vote or approval, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. This communication is not, and under no circumstances is to be construed as, a prospectus, an advertisement or a public offering of the securities described herein in the United States or any other jurisdiction. No offer of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended, or exemptions therefrom. INVESTMENT IN ANY SECURITIES DESCRIBED HEREIN HAS NOT BEEN APPROVED BY THE SEC OR ANY OTHER REGULATORY AUTHORITY NOR HAS ANY AUTHORITY PASSED UPON OR ENDORSED THE MERITS OF THE OFFERING OR THE ACCURACY OR ADEQUACY OF THE INFORMATION CONTAINED HEREIN. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.