The first quarter of 2026 has seen significant investment activity in the private venture sector, with a strong focus on artificial intelligence (AI), despite ongoing legal controversies surrounding at least three of the space’s key players.
Here are five companies that completed the largest funding rounds during the first quarter, Forge Global reports.
OpenAI Leads The Charge
OpenAI secured a monumental $110 billion Series C funding round, marking one of the largest private investments ever recorded.
Forge stated that this influx of capital into OpenAI, supported by major players such as Nvidia, Amazon, and SoftBank, underscores the growing enthusiasm for AI’s commercial prospects.
OpenAI is expanding its product lineup, including the upcoming launch of the Sora application in ChatGPT, which aims to enhance user interaction with AI.
The company’s co-founders, Sam Altman and Greg Brockman, are currently embroiled in a lawsuit with the world’s richest man, Elon Musk, one of OpenAI’s investors.
Musk alleges that Altman and Brockman lied about maintaining a nonprofit structure at the time of his $38-million seed investment. He is seeking up to $134 billion in damages from both OpenAI and Microsoft Corp (NASDAQ:MSFT).
Anthropic Attracts Investments
Anthropic, raised $30 billion in its Series G round in February 2026. The San Francisco-based company, established by former OpenAI …
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