Key Takeaways
- • AI companies captured 82.7% of all US venture deal value through the first three quarters of 2026, the highest annual share in PitchBook's dataset, according to the Q3 2026 PitchBook-NVCA Venture Monitor released October 7.
- • US venture deal value reached $515.8 billion through September, about 44% above the full-year 2021 record, with roughly $426 billion attributed to AI companies.
- • At Series A, AI startups carried a median pre-money valuation of $78 million versus $42.4 million for non-AI companies, while at Series B the figures were $270.8 million versus $174.0 million.
- • Crunchbase reported AI took 64% of the $159 billion in worldwide venture funding in Q3, with OpenAI, Anthropic, xAI and Waymo accounting for nearly two-thirds of global funding in the first half of 2026.
Summary
AI companies took 82.7% of US venture deal value through the first three quarters of 2026, according to the Q3 2026 PitchBook-NVCA Venture Monitor released October 7. PitchBook says this is the highest annual share in the dataset it has tracked. Total US deal value reached $515.8 billion through September, roughly 44% above the full-year record set in 2021, and AI accounted for about $426 billion of that total.
The valuation gap is especially pronounced at the Series A stage. According to PitchBook data, the median pre-money valuation for a non-AI startup raising a Series A this year was $42.4 million, compared with $78 million for an AI startup at the same stage. At Series B, AI companies had a median of $270.8 million against $174.0 million for non-AI companies. At seed, the spread nearly disappears, with AI at $18.7 million and non-AI at $18.0 million. The article argues that investors are paying a premium for startups that can credibly position themselves as AI companies by the time they need later-stage capital.
Crunchbase, which tracks deals globally, found AI took 64% of the $159 billion in worldwide venture funding in the third quarter, down from the 86% share of US dollars PitchBook and NVCA recorded for the first half of the year. The two firms measure different geographies and differ on the exact figures, but both show AI capturing a growing share of venture capital.
A small number of companies account for a large portion of the total. Crunchbase data show OpenAI raised $122 billion across rounds in the first half of 2026, with Anthropic adding $30 billion, xAI $20 billion and Waymo $16 billion. Crunchbase also logged 27 billion-dollar-plus rounds in Q3 alone, eight of them above $3 billion, including $5 billion rounds for Databricks and Safe Superintelligence. Deal count has continued to decline even as dollar totals reach records, indicating that capital is concentrating in fewer companies at higher prices.
The article notes signs of strain, including widening credit default swaps on CoreWeave that the author says signal distress-level default risk. The author compares the current concentration to the dot-com era, while acknowledging that the data do not show whether the cycle will end similarly.
The valuation gap is especially pronounced at the Series A stage. According to PitchBook data, the median pre-money valuation for a non-AI startup raising a Series A this year was $42.4 million, compared with $78 million for an AI startup at the same stage. At Series B, AI companies had a median of $270.8 million against $174.0 million for non-AI companies. At seed, the spread nearly disappears, with AI at $18.7 million and non-AI at $18.0 million. The article argues that investors are paying a premium for startups that can credibly position themselves as AI companies by the time they need later-stage capital.
Crunchbase, which tracks deals globally, found AI took 64% of the $159 billion in worldwide venture funding in the third quarter, down from the 86% share of US dollars PitchBook and NVCA recorded for the first half of the year. The two firms measure different geographies and differ on the exact figures, but both show AI capturing a growing share of venture capital.
A small number of companies account for a large portion of the total. Crunchbase data show OpenAI raised $122 billion across rounds in the first half of 2026, with Anthropic adding $30 billion, xAI $20 billion and Waymo $16 billion. Crunchbase also logged 27 billion-dollar-plus rounds in Q3 alone, eight of them above $3 billion, including $5 billion rounds for Databricks and Safe Superintelligence. Deal count has continued to decline even as dollar totals reach records, indicating that capital is concentrating in fewer companies at higher prices.
The article notes signs of strain, including widening credit default swaps on CoreWeave that the author says signal distress-level default risk. The author compares the current concentration to the dot-com era, while acknowledging that the data do not show whether the cycle will end similarly.
Go deeper than the headline
Research every firm in this story, track the ones that matter and get the daily briefing — free for 7 days.