H1 2026 global VC hits $412.7B, 86% to AI; investors bet on inference chip wars

PitchBook data shows U.S. venture capital funding reached $412.7 billion in the first half of 2026, a 30% increase from all of 2025, with AI startups capturing 86% of total capital—$355.9 billion. The second quarter alone featured seven billion-dollar-plus rounds, underscoring continued investor enthusiasm for frontier AI models, infrastructure, and agents. AI chip and semiconductor startups are capturing a disproportionate slice: semiconductor funding has hit $10.7B in H1 2026 on track to eclipse 2025 levels.

Multiple high-profile AI chip rounds mark a capital sprint for inference alternatives to NVIDIA. Positron AI entered talks to raise $750 million at up to $5 billion valuation; Iluvatar CoreX completed an $800M+ Hong Kong IPO at 15% discount, shares up 234% since January IPO. The wave signals investor conviction that the inference-chip market window has cracked open. Cerebras (April IPO after $1B pre-IPO round) was the gateway: now SambaNova, Positron, and Iluvatar's back-to-back fundraisings reflect a benchmark reset—when a comparable player hits $11 billion valuation, competitors accelerate their own rounds.

VC concentration in AI is accelerating innovation but also bifurcating the funding landscape. Mega-rounds for frontier labs and infrastructure dominate, while non-AI sectors see flat or declining activity. The explosive capital velocity masks tightening selectivity: investors are betting on a narrow cohort they believe can survive commercialization, not funding a broad ecosystem. For architects: this capital concentration means fewer, better-funded competitors entering the market—but also higher bar for new entrants without institutional backing or pre-existing moats.