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In startup circles, 2025 will be remembered as a busy year for big AI rounds.

A total of 15 companies secured venture funding rounds of $2 billion or more last year, per 附近上门 data. Among them, they amassed more than $100 billion from those financings.

The majority were generative AI companies, and they accrued most of the cash. The single largest round went to , with its record-setting $40 billion -backed financing in March. Four others raised rounds of more than $5 billion.

With the year now in hindsight, we thought it would be timely to take a look at who secured the largest financings. Below are the top 15, in descending order.

1. , $40B, artificial intelligence: On March 31, OpenAI announced that it secured a $40 billion investment led by . The deal for the San Francisco-based company is the biggest venture investment ever. Per details of the deal, SoftBank will build a syndicate of co-investors to provide $10 billion of the total, while it expects to fund the other $30 billion, with $10 billion of that amount through debt.

2. , $14.3B, generative AI: San Francisco-based Scale AI, a provider of training data and model evaluation for AI applications, raised a reported from in June at a valuation of $29 billion. Under the agreement, Scale鈥檚 founder, , and some other employees joined Meta to work on its AI efforts.

3. , $13B, generative AI: San Francisco-based generative AI unicorn Anthropic raised a $13 billion Series F round at a $183 billion valuation in September. led the round, with and co-leading.

4. , $6.2B, artificial intelligence: Project Prometheus, a startup focused on applying AI technology to physical tasks, launched with $6.2 billion in initial funding, per a November report. will reportedly serve as co-CEO, alongside , a physicist and chemist who served as CEO and co-founder of biotech startup and is also known for his work at 鈥檚 .

5. , $5.3B, generative AI: 鈥檚 generative AI startup xAI pulled in $5.3 billion in fresh equity funding this summer, per a securities . Since its inception just two-and-half years ago, the Palo Alto, California-based company has raised more than $22 billion in equity and debt financing, per .

6. , $4B, data and AI: Databricks in December that it is raising over $4 billion in a Series L financing at a $134 billion valuation, led by , and . The 12-year-old, San Francisco-headquartered company also said it crossed the $4.8 billion revenue run-rate in its third quarter, growing more than 55% year over year.

7. , $3.5B, generative AI: Anthropic raised a $3.5 billion funding round in March led by , valuing the San Francisco-based unicorn at $61.5 billion.

8. , $2.5B, defense tech: Costa Mesa, California-based defense tech startup Anduril Industries has raised $2.5 billion in a June Series G round led by , more than doubling its valuation to $30.5 billion post-money.

9. , $2.3B, AI coding: Coding automation platform Cursor and parent company Anysphere $2.3 billion in a November Series D financing backed by , , , , , and . The round set a $29.3 billion post-money valuation for the San Francisco-headquartered company.

10. (tied) , $2B, prediction market: , the operator of clearing houses and exchanges including the , in October that it will invest up to $2 billion into the prediction market platform Polymarket. The deal sets an $8 billion pre-money valuation for New York-based Polymarket, which lets users wager on event probabilities across markets, politics, sports and other areas.

10. (tied) , $2B, artificial intelligence: Reflection AI, a developer of LLM training models based on open standards, raised $2 billion in an October backed by and a long list of venture investors. The financing sets an $8 billion valuation for the New York-based company.

10. (tied) , $2B, artificial intelligence: AI research lab Safe Superintelligence, the Palo Alto, California-based startup co-founded by 鈥檚 former chief scientist , raised a $2 billion April round at a $32 billion valuation led by .

10. (tied) , $2B, artificial intelligence: San Francisco-based Thinking Machines Lab, the artificial intelligence startup launched and led by former CTO , reportedly secured a $2 billion seed round at a $10 billion valuation with as lead investor. The financing ranks as the largest U.S. seed round of all time, per 附近上门 data.

10. (tied) , $2B, cryptocurrency: Malta-based cryptocurrency exchange Binance received a $2 billion investment in March from Abu Dhabi-based investment firm .

10. (tied) , $2B, generative AI: France-based frontier model company Mistral was valued at $13.2 billion in a $2 billion September funding led by Netherlands-based chipmaker .

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Related reading:

• The 附近上门 Megadeals Board
• SoftBank And OpenAI Make History With Largest Startup Financing Ever
• Anthropic Nearly Triples Valuation To $183B With Massive New Funding
• Bezos Launches AI Startup With $6.2B In Reported Funding

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