Elon Musk and Sam Altman, co-founders of OpenAI and now rivals in the competitive tech sector, continue their race to attract millions in investments for their respective companies: SpaceX and OpenAI, currently the most valuable start-ups on the planet. In this context, Musk has accelerated preparations for SpaceX's IPO, expected this year. The operation could raise up to $30 billion, with a valuation that could reach $1.5 trillion, making it the largest IPO in history. According to the Financial Times, the operation will be backed by major U.S. investment banks such as Bank of America, Goldman Sachs, JP Morgan Chase, and Morgan Stanley, with more entities expected to participate. During the Davos Forum, Musk, whose fortune is around $690 billion, emphasized SpaceX's advancements in rocket technology and its goal of expanding human life beyond Earth, towards the Moon, Mars, and other solar systems. He highlighted improvements in engines and spacecraft, as well as the challenge of achieving total rocket reusability this year. Additionally, despite criticism, Musk received shareholder support from Tesla in November for a compensation package close to $1 billion. Meanwhile, Sam Altman is seeking to close a new funding round for OpenAI in the United Arab Emirates, aiming to raise $50 billion and achieve a valuation between $750 billion and $830 billion. Potential investors include the Saudi sovereign fund PIF and Abu Dhabi's MGX, both already involved in previous rounds. OpenAI has also negotiated with Amazon for a possible $10 billion investment and has raised billions in recent years to cover high costs of chips, data centers, and AI talent. The company plans to invest over $1.4 trillion in AI infrastructure in the coming years and is considering its IPO. Earlier last year, OpenAI conducted a capital increase of over $40 billion, led by SoftBank with participation from Microsoft, Coatue, Altimeter, and Thrive. In October, the company closed an employee stock sale for $6.6 billion, with a valuation of $500 billion. Its CFO, Sarah Friar, recently stated that the goal for 2026 is to achieve "practical adoption" of AI, highlighting annual revenue growth from $2 billion to over $20 billion in a single year. In parallel, xAI, Musk's start-up that directly competes with OpenAI, completed an expanded Series E round this year, raising $20 billion, exceeding its initial target. Investors include Valor Equity Partners, Stepstone Group, Fidelity, Baron Capital Group, Qatar Investment Authority, and MGX. Cisco Investments and Nvidia also participated, maintaining strategic alliances with both xAI and OpenAI, including a $100 billion investment commitment announced last September. Anthropic, another key player in the AI sector, is also seeking funding and considering its IPO. According to U.S. media, it is negotiating a $10 billion round with a valuation of $350 billion, with investors such as Coatue, Singapore's GIC, and Sequoia Capital. In September, Anthropic closed a $13 billion Series F led by ICONIQ, with participation from Fidelity, Lightspeed, Altimeter, Baillie Gifford, funds from BlackRock, Blackstone, D1 Capital Partners, General Atlantic, GIC, Goldman Sachs, among others, and subsequently received an additional $15 billion from Nvidia and Microsoft. Despite warnings about a potential bubble in AI, investor interest in companies like OpenAI, SpaceX, and Anthropic remains high, with strong demand in private markets, according to specialized financial press.