Billion Series

• Elon Musk's xAI announced a $6 billion Series C funding round on April 19, 2026, led by Sequoia Capital, valuing the startup at $24 billion post-money. • Funds will expand the Colossus supercomputer in Memphis, Tennessee, to 300,000 Nvidia GPUs for Grok AI training. • Investment accelerates US AI infrastructure race, countering China's advances and supporting domestic chip production.

• Perplexity AI announced a Series D funding round of $500 million at an $8.5 billion post-money valuation on April 19, led by prominent venture capital firms and strategic investors including Nvidia and Saudi PIF. • The funding will support expansion of Perplexity's AI search engine capabilities, development of enterprise API offerings, and geographic expansion into European and Asian markets with localized language models. • The round positions Perplexity as a serious challenger to Google Search and reflects growing investor confidence in AI-powered search alternatives and conversational information retrieval platforms.

• Anthropic secured $8 billion in its Series E funding round on April 9, 2026, led by Lightspeed Venture Partners with participation from US-based investors including Amazon and Google. • The funds will accelerate development of Claude 4 AI models and expand enterprise AI infrastructure in US data centers. • This round values Anthropic at $61.5 billion post-money, solidifying its position as a leading US AI challenger to OpenAI amid intensifying competition.

• Shield AI, a U.S.-based developer of autonomous pilot platforms, secured $1.5 billion in Series G funding as part of a $2.25 billion capital package on April 4, 2026. • The round values the company at $12.7 billion, a 140% increase in one year, with its Hivemind platform selected by the U.S. military for defense applications. • This funding underscores surging investor confidence in AI-driven defense tech amid rising geopolitical tensions.

• US defense AI startup Shield AI raised $1.5 billion in Series G funding, valuing it at $12.7 billion post-money, a 140% increase from prior rounds. • The investment supports scaling autonomous drones via Hivemind AI pilot software, following a US Air Force contract and acquisition of simulation firm Aechelon. • With projected $540 million revenue this year, Shield AI leads in military AI, enhancing US drone capabilities against global threats.