Determining the "smartest CEOs in the world" is subjective and depends on criteria such as innovation, leadership, problem-solving ability, vision, and impact on their industries. Here are some companies led by CEOs widely regarded as exceptionally intelligent and capable, based on their track records:

1. Tesla and SpaceX - Elon Musk

• Why Smart?
• Known for revolutionizing multiple industries: electric vehicles (Tesla), space exploration (SpaceX), and energy (SolarCity).
• Visionary leadership, tackling complex problems like Mars colonization and renewable energy.
• High engineering and scientific acumen.
• Impact: Tesla popularized electric vehicles; SpaceX achieved reusable rockets.

2. Alphabet (Google) - Sundar Pichai

• Why Smart?
• Oversees one of the world's most influential tech companies.
• Known for a calm, strategic approach to scaling Google's ecosystem, including AI and cloud computing.
• Successfully led the development of Chrome and Android OS.
• Impact: Google remains a leader in AI research and global digital transformation.

3. Microsoft - Satya Nadella

• Why Smart?
• Transformed Microsoft by embracing cloud computing (Azure) and open-source software.
• Revived Microsoft's culture, making it more innovative and agile.
• Focused on AI and quantum computing for the future.
• Impact: Turned Microsoft into a trillion-dollar company and global cloud leader.

4. Amazon - Andy Jassy

• Why Smart?
• Former head of Amazon Web Services (AWS), which dominates the global cloud market.
• Focused on innovation and maintaining Amazon's leadership in e-commerce and tech.
• Strategic thinker, maintaining Amazon's growth amidst challenges.
• Impact: AWS has reshaped IT infrastructure for companies worldwide.

5. Berkshire Hathaway - Warren Buffett

• Why Smart?
• Known as the "Oracle of Omaha" for his unmatched investment acumen.
• Built Berkshire Hathaway into one of the largest and most profitable companies globally.
• Emphasizes long-term thinking and value-based investing.
• Impact: His decisions have influenced global investment strategies.

6. NVIDIA - Jensen Huang

• Why Smart?
• A pioneer in graphics processing technology and AI computing.
• Drove NVIDIA's dominance in GPUs, which are critical for AI, gaming, and cloud computing.
• Exceptional foresight in expanding NVIDIA's role in autonomous vehicles and healthcare.
• Impact: NVIDIA's GPUs power the AI revolution.

7. Apple - Tim Cook

• Why Smart?
• Masterful operational leader, driving Apple's growth post-Steve Jobs.
• Focused on expanding Apps ecosystem and maintaining product excellence.
• Expertise in supply chain management and sustainability.
• Impact: Apple became the first $3 trillion company under his leadership.

8. Meta (Facebook) - Mark Zuckerberg

• Why Smart?
• Founded Facebook, which transformed global communication and social networking.
• Leading Meta's pivot to the metaverse, showcasing adaptability and vision.
• Focuses on leveraging AI and AR/VR technologies.
• Impact: Facebook and Instagram influence billions of users daily.

9. OpenAI - Sam Altman

• Why Smart?
• At the forefront of artificial intelligence research.
• Co-led the development of GPT models, revolutionizing natural language processing.
• Strategic thinker in balancing innovation with ethical considerations in AI.
• Impact: OpenAI's work has reshaped how businesses and individuals interact with AI.

10. JPMorgan Chase - Jamie Dimon

• Why Smart?
• Steered JPMorgan through financial crises, making it the largest U.S. bank by assets.
• Known for his deep understanding of global finance and risk management.
• Influential voice in economic and financial policy.
• Impact: Continues to set benchmarks for the banking industry.

Honorable Mentions:

• Reed Hastings (Netflix): Revolutionized media consumption with streaming.
• Arvind Krishna (IBM): Driving quantum computing and AI development.
• Pat Gelsinger (Intel): Leading Intel's resurgence in the semiconductor industry.
• Lisa Su (AMD): Turned AMD into a powerhouse in CPUs and GPUs.

These CEOs are known not only for their intelligence but also for their ability to adapt, innovate, and lead their companies in highly competitive and rapidly changing markets. Most are private companies with smart CEOs