Top biggest AI funding rounds of 2025 (coinheadlines.com)

As 2025 comes to a close, the AI startup ecosystem has seen unprecedented levels of investment, with several companies reporting massive funding rounds. OpenAI continued to dominate with a staggering $40 billion raise, elevating its valuation to $300 billion and later hitting over $500 billion after secondary sales. The company has expanded its ChatGPT offering significantly, capturing a vast global user base. Other significant players include Anthropic, which raised $13 billion in September, bringing its valuation to $183 billion with an eye towards a potential IPO. Meanwhile, Scale AI, founded in 2016, achieved a $29 billion valuation through a Series G round, while maintaining a strong growth trajectory. Notable newcomers include Figure AI, valued at $39 billion, and Mistral AI, positioned as Europe's response to AI advancements after securing €1.3 billion from ASML. Lambda also made waves with a $1.5 billion Series E raise aimed at enhancing AI infrastructure, and Databricks pivoted toward AI with a $4 billion Series L round that launched its valuation to $134 billion. This surge in funding has raised eyebrows among traditional economic stakeholders but signals a robust belief in AI's transformative potential across industries, highlighting an explosive year for innovation and financial backing in the AI space.