September 2026 AI Funding Roundup

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Explore tracked AI funding rounds from September 2026.

$21.1B
Total Raised
9
Deals
$2.3B
Avg Deal Size
#1
Crusoe logo
Crusoe
AI Infrastructure

Provides AI infrastructure for large-scale computing demand as the market for AI capacity accelerates.

$3.9B
Val: $30.9B
Sep 18, 2026
HQ: Denver, United States

Investors

Undisclosed (Lead)
View Company Profile
#2
CoreWeave logo
CoreWeave
AI Fintech
Convertible Bond

AI cloud infrastructure provider powering large-scale training and inference. CoreWeave raised $7.5B in recent funding rounds—see the latest details.

$3.7B
Sep 22, 2026
HQ: San Francisco, CA

Investors

Undisclosed (Lead)
View Company Profile
#3
Mistral logo
Mistral
Foundation Models & AGI
Series D

European AI lab building open-weight large language models for developers and enterprises. Mistral's models, including Mistral Large and Mixtral (mixture-of-experts), deliver frontier performance with permissive licenses. Founded by former Meta and DeepMind researchers in Paris, Mistral is Europe's most valuable AI startup and a champion of open-source AI development.

$3.5B
Val: $24.0B
Sep 8, 2026
HQ: Paris, France

Investors

Undisclosed (Lead)
View Company Profile
#4
Nscale logo
Nscale
AI Infrastructure
Debt Financing

Full-stack AI cloud infrastructure provider operating renewable-energy-powered GPU data centers across Europe. Nscale offers on-demand access to large-scale NVIDIA GPU clusters for AI training and inference, with a focus on sustainable computing and European data sovereignty. Positioned as a key player in building sovereign AI infrastructure outside US hyperscalers.

$3.0B
Sep 1, 2026
HQ: London, United Kingdom

Investors

Undisclosed (Lead)
View Company Profile
#5
Waymo logo
Waymo
AI Robotics
Debt Financing

Develops autonomous driving technology and robotaxi services that use AI to operate vehicles across urban ride-hailing and mobility markets.

$3.0B
Sep 2, 2026
HQ: Mountain View, United States

Investors

Undisclosed (Lead)
View Company Profile
#6
Motive logo
Motive
Enterprise AI

An AI platform supports companies managing physical operations, helping them scale workflows across real-world operating environments.

$1.3B
Sep 11, 2026
HQ: San Francisco, USA

Investors

General Catalyst (Lead)
View Company Profile
#7
Thinking Machines Lab logo
Thinking Machines Lab
Foundation Models & AGI
Seed

Thinking Machines Lab is a US-based AI research and product company developing customizable AI systems, with a focus on broad capabilities and collaboration between people and AI.

$1.0B
Sep 4, 2026
Founded: 2025HQ: United States

Investors

General Catalyst (Lead)
View Company Profile
#8
Positron logo
Positron
AI Infrastructure

It develops AI compute systems positioned as an alternative to Nvidia for companies building and running artificial intelligence workloads.

$875M
Val: $5.0B
Sep 10, 2026
HQ: Reno, United States

Investors

Undisclosed (Lead)
View Company Profile
#9
Impulse Space logo
Impulse Space
Deep Tech

Space propulsion startup raises major funding in 2026—see the full breakdown of valuation, investors, and how it stacks up against top AI raises.

$808M
Sep 16, 2026
HQ: Redondo Beach, United States

Investors

Undisclosed (Lead)
View Company Profile

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