April 2026 AI Funding Roundup

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$90.8B+ raised across 105 deals in April 2026. Anthropic, Project Prometheus, CoreWeave lead the pack.

$64.8B
Total Raised
10
Deals
$6.5B
Avg Deal Size
#1
Anthropic logo
Anthropic
Foundation Models & AGI
Undisclosed

AI safety company building reliable, interpretable, and steerable AI systems. Creator of Claude, a frontier large language model known for advanced reasoning, coding, and analysis. Anthropic pioneered Constitutional AI for model alignment and leads research in mechanistic interpretability. A top competitor in the foundation model race alongside OpenAI and Google DeepMind.

$40.0B
Val: $266.7B
Apr 24, 2026
Founded: 2021HQ: San Francisco, CA

Investors

Undisclosed (Lead)
View Company Profile
#2
PP
Project Prometheus
Enterprise AI
Undisclosed

An AI startup that secured a $10 billion raise on 2026-04-24, becoming one of the most valuable five-month-old startups in history.

$10.0B
Val: $66.7B
Apr 24, 2026
HQ: San Francisco, CA

Investors

Undisclosed (Lead)
View Company Profile
#3
CoreWeave logo
CoreWeave
AI Fintech
growth

Operates a high-performance cloud platform that provides compute and infrastructure tailored for large-scale AI training and inference workloads.

$8.5B
Val: $56.7B
Apr 1, 2026
HQ: San Francisco, CA

Investors

Undisclosed (Lead)
View Company Profile
#4
Firmus logo
Firmus
AI Infrastructure
Undisclosed

Builds and operates AI-optimized data centers and infrastructure to support large-scale compute workloads, backed by Nvidia and funded with $505M.

$505M
Val: $3.4B
Apr 6, 2026
HQ: San Francisco, CA

Investors

Undisclosed (Lead)
View Company Profile
#5
Saronic logo
Saronic
AI Robotics
Undisclosed

Develops autonomous vessels and shipbuilding capabilities to rebuild U.S. shipbuilding around unmanned maritime platforms at industrial scale.

$1.8B
Val: $11.7B
Apr 1, 2026
HQ: United States

Investors

Undisclosed (Lead)
View Company Profile
#6
Ineffable Intelligence logo
Ineffable Intelligence
AI Infrastructure
Undisclosed

Ineffable Intelligence designs next-generation AI memory chips to overcome the memory bandwidth bottleneck limiting AI training and inference. As large language models demand ever more memory throughput, Ineffable's specialized memory architecture addresses a critical constraint that traditional DRAM and HBM solutions struggle to meet at scale.

$1.0B
Val: $6.7B
Apr 27, 2026
HQ: San Francisco, CA

Investors

Undisclosed (Lead)
View Company Profile
#7
Fluidstack logo
Fluidstack
Enterprise AI
Undisclosed

Provides enterprise AI platforms and solutions for business customers, positioning itself for large-scale commercial deployment and institutional backing.

$1.0B
Val: $6.7B
Apr 15, 2026
HQ: San Francisco, CA

Investors

Undisclosed (Lead)
View Company Profile
#8
SB
SpaceX backer 137 Ventures
Deep Tech
growth

A venture investment firm that backs growth-stage companies and raised $700M to seed two growth-stage funds.

$700M
Val: $4.7B
Apr 30, 2026
HQ: San Francisco, CA

Investors

Undisclosed (Lead)
View Company Profile
#9
Slate Auto logo
Slate Auto
Deep Tech
Undisclosed

Designs and builds electric pickup trucks for consumer and commercial buyers, backed by Bezos investors and funded with $650M from TWG Global.

$650M
Val: $4.3B
Apr 14, 2026
HQ: San Francisco, CA

Investors

Undisclosed (Lead)
View Company Profile
#10
True Anomaly logo
True Anomaly
AI Security
Series D

Delivers space-focused security solutions to safeguard satellites and other space assets for commercial and government operators.

$650M
Val: $6.5B
Apr 28, 2026
HQ: San Francisco, CA

Investors

Undisclosed (Lead)
View Company Profile

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