AI captured 65.6% of all US VC deal value in 2025 — $222 billion of the $339 billion total, up from 47.2% in 2024 and just 10% in 2015. The aggregate value of US unicorns reached $4.3 trillion, driven heavily by foundation model and AI infrastructure leaders including OpenAI, SpaceX, xAI, and Anthropic. Half of all venture dollars went into 0.05% of deals — a concentration that reshapes fund construction, LP allocation, and the competitive map for any non-mega-fund manager. For investors, sector exposure does not equal AI exposure: most of the AI capital in 2025 concentrated at the foundation model layer, not across the broader application stack.
AI & Machine Learning Investment Landscape at a Glance
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65.6%
vs 47.2% in 2024
AI share of US VC deal value (2025)
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$222B
of $339.4B total
AI capital deployed (2025)
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$40B
Q1 2025 round
OpenAI single funding round
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$15B
Jan 2026 close
a16z latest fund close
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Why it matters
The AI investment thesis has bifurcated. Foundation model and AI infrastructure capital concentrated at the top — OpenAI’s $40 billion round and Andreessen Horowitz’s $15 billion fund close anchor the concentration story. AI-linked climate tech hit an all-time high in deal value in Q4 2025 as investors backed energy monitoring, grid optimization, and the rising power demands of AI infrastructure. AI-enabled fintech commands median valuations 41% higher than non-AI fintech, with early-stage AI fintech at 242% premiums. The cross-vertical pattern — AI premiums in fintech, climate, healthcare — is more durable than the individual sector trends underneath.
Key takeaways
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Foundation model concentration
Top AI rounds dwarf the rest of the marketOpenAI secured a $40 billion funding round in Q1 2025 — among the largest single rounds in PitchBook's dataset. SpaceX, xAI, and Anthropic round out the top of the US unicorn list at a $4.3 trillion aggregate value, with the 10 largest companies accounting for 51.8% of total unicorn value. Foundation model investment is its own market segment. |
AI premium across verticals
AI valuation premium spans fintech, climate, and healthcareAI-enabled fintech commands median valuations 41% higher than non-AI fintech, with early-stage AI fintech at $134 million median — 242% higher than non-AI counterparts. AI-linked climate tech hit an all-time high in deal value in Q4 2025, anchored by Crusoe's $1.4B Series E and Base Power's $1B Series C. The AI premium pattern is cross-vertical. |
AI infrastructure M&A
Aligned Data Centers consortium signals AI infra consolidationA consortium led by BlackRock's Global Infrastructure Partners with Nvidia, Microsoft, and xAI acquired Aligned Data Centers for about $40 billion in 2025 — among the AI infrastructure deals of the year. AI infrastructure now competes with foundation model investment for capital allocation at the largest scale. |
Companies & investors
The companies and investors below are active in this market. The italicized line under each is descriptive context — the entity's role in the dynamic this page is tracking.
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OpenAI
Foundation Model / Late-Stage Private
Q1 2025 secured a $40 billion funding round — among the largest single rounds in PitchBook's dataset. Among the unicorns driving the $4.3 trillion aggregate US unicorn value. View OpenAI profile → |
Anthropic
Foundation Model / Late-Stage Private
Among the largest US unicorns by valuation. Strategic relationships with Google and Amazon make it a frequently cited data point for the corporate-strategic AI investment thesis. View Anthropic profile → |
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CoreWeave
AI Infrastructure / Recent IPO
Q1 2025 IPO. A 2025 AI infrastructure listing that informs late-stage AI infrastructure pricing in the public market. View CoreWeave profile → |
Andreessen Horowitz (a16z)
Venture Capital Firm
Closed a $15 billion fund in early January 2026 — more than 18% of all new commitments to VC funds since January 2025. Tracked by PitchBook as a marker of AI-era capital concentration. View Andreessen Horowitz profile → |
Featured research
The PitchBook reports and articles that source the data on this page.
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Q1 2026
Q4 2025 PitchBook-NVCA Venture Monitor$339.4B in US 2025 deal value; AI captured 65.6%. Half of all venture dollars went into 0.05% of deals. Download report → |
Q1 2026
2025 Annual US VC Valuations and Returns ReportMedian pre-money valuations reached decade highs in 2025. Unicorn value at $4.3 trillion with 10 largest = 51.8% of total. Download report → |
Q4 2025
Q3 2025 PitchBook Analyst Note: Fintech's AI PremiumAI-enabled fintech median valuation at early stage: $134M — 242% higher than non-AI counterparts. Median valuation 41% higher overall. Download report → |
Get this data in PitchBook
This page surfaces 4 reference AI entities active in 2025. PitchBook tracks the full AI investment universe — foundation model rounds, infrastructure plays, applied AI startups, and every co-investor relationship across the $222 billion deployed in 2025.
Track AI deal flowScreen AI rounds by stage, vertical, and check size. Identify foundation model, infrastructure, and applied AI activity in real time. Explore → |
Benchmark AI valuationsCompare AI premiums across fintech, climate, healthcare, and SaaS. Surface the 41% fintech premium and 242% early-stage premium in your comp sets. Explore → |
Map the AI infrastructure landscapeProfile data center, compute, and energy infrastructure plays. Track the consortium activity behind deals like Aligned Data Centers. Explore → |
Track AI deal flow, benchmark AI valuation premiums, and map the infrastructure landscape behind the $222B deployed in 2025.
Request a free trial →Featured research
PitchBook's published research on the trends shaping this page. Each report draws on the dataset behind the data above.
- Autonomous machines: strongest QoQ acceleration on record
- AI semiconductors: second-highest quarterly deal value ever
- Project Prometheus: $6.2B early-stage round
- Databricks: $4B Series L
- $339.4B deployed across 16,709 US VC deals in 2025
- AI captured 65.6% of deal value
- $66.1B in fundraising — lowest since 2018
- Half of dollars went to 0.05% of deals
- $512.6B in global VC deal value
- US: two-thirds of global investment
- AI: more than half of global dollars
- Asia: 40% of annual value in Q4 alone
Get this data in PitchBook
The data on this page reflects what is publicly available. The platform tracks every AI deal, fund, and investor in real time, with the depth GPs need for diligence and LP reporting.
Every active AI deal. Every lead investor. Every valuation.
PitchBook's weekly AI briefings deliver the deals, fund closes, and exit signals that matter — distilled by the same research team behind the AI VC Trends report and the PitchBook-NVCA Venture Monitor.
Track every AI deal as it closes. Build comp sets across foundation models, AI infrastructure, and vertical applications. Monitor the firms reshaping AI capital allocation in real time.
Subscribe to AI updates →Source: Q4 2025 PitchBook-NVCA Venture Monitor; Q4 2025 Global VC First Look; Q4 2025 AI VC Trends Report; Q1 2025 AI & ML VC Trends Report; PitchBook articles published 2024–2026. All figures cited reflect data published by PitchBook in prospect-facing reports and articles.
Update cadence: Weekly (Tier A). Stats refresh as PitchBook publishes new quarterly research.
Methodology: Deal value reflects completed and announced rounds aggregated by PitchBook’s research team. AI share reflects deals tagged AI/ML by PitchBook’s classification taxonomy. Fundraising reflects new commitments to US-domiciled venture funds.