Air Street Capital
London, UK · Invests in US; UK; Europe; MENA · Website
Check size
🔒 $•• – $••Thesis
We invest exclusively in AI-first companies where advances in artificial intelligence are the primary driver of product capability, competitive advantage, and long-term value creation. We are deeply coupled to the frontier of AI research and industry, enabling us to identify emerging technical inflection points and structural shifts early.
Likely not a fit for
Non-AI-first companies, features layered on top of existing software, companies without deep founder technical expertise in AI domains
How they invest
- Lead or follow
- Usually leads
- Typical decision
- ~1 month
- Warm intro
- Not required
- Involvement
- Advisor
- Fund status
- Actively deploying
- Decision process
- Solo GP
Partners & team
2 contacts on file
Portfolio
Black Forest Labs is a frontier AI research lab focused on developing state-of-the-art generative deep learning models for media such as images and videos, with a mission to advance visual intelligence.
Profluent Bio is pioneering the use of AI to design and author proteins, enabling breakthroughs in medicine and agriculture. Their platform integrates advanced machine learning with biological research to create innovative protein solutions.
Poolside is a frontier lab focused on building foundation models, agents, and enterprise systems to deploy artificial general intelligence (AGI) in high-consequence environments, transforming how work gets done in enterprises.
Delian Alliance Industries develops autonomous systems for defense, focusing on counter-drone technology and surveillance to protect European borders against emerging threats.
Studio Atelico develops the Atelico AI Engine, an on-device AI solution for video games that allows developers to integrate generative AI capabilities directly into their games without the high costs and limitations of cloud-based solutions.
Delfa builds AI agents to automate patient recruitment for clinical trials, significantly reducing the time and cost associated with recruiting and retaining patients.
Polar Mist Technologies focuses on building advanced solutions for European maritime supremacy, emphasizing adaptability and AI capabilities in mission-critical scenarios.
Clove Group Limited aims to revolutionize financial advice and services, focusing on making financial advice accessible to a broader audience beyond the wealthy.
Fern Labs is focused on leveraging AI technologies to enhance various applications.
Eleven Labs is an AI audio technology company that empowers individuals and businesses to create accessible content, engaging educational tools, and immersive entertainment experiences. Their innovative solutions include voice cloning and AI-generated speech, all while prioritizing safety and responsible use to prevent misuse of their technology.
Synthesia is the leading AI video platform that enables businesses to create and manage AI-generated videos for various applications including training, marketing, and sales enablement.
The leading provider of enterprise AI agents for customer service. PolyAI resolves millions of customer service inquiries on behalf of the world's most trusted brands, providing engaging and lifelike experiences that feel like talking to a real person.
Recent activity
- Apr 2026
Sereact
Series B · Follow-on
- Dec 2025
Black Forest Labs
Series B · Co-investor
- Dec 2025
Profluent
Growth · Follow-on
- Nov 2025
Delian Alliance Industries
Series A · Co-lead
- Nov 2025
Sereact
Series A · Follow-on
- Nov 2025
Hedera Dx
Series A · Follow-on
- Oct 2025
Studio Atelico
Seed · Lead
- Sep 2025
Clove
Seed · Co-investor
Air Street Capital in the news
FinSMEs
Stark Closes €500M Funding Round at €3 Billion Valuation
2 months ago
Pulse 2.0
Stark Defence Reportedly Raises €500 Million At €3.5 Billion Valuation
2 months ago
Tech Funding News
French startup Alta Ares wants to make air defence cheaper than an attack, and it just raised €50M led by Air Street Capital
3 months ago
en.ain.ua
Alta Ares raised €50 million in investment. Where will the funds go?
3 months ago
Sifted
Air Street Capital backs French defence tech Alta Ares in €50m round
3 months ago
European Biotechnology Magazine
Ex-Palantir execs raise $12M to develop AI operating system at Perceptic
3 months ago
Fortune
Exclusive: Ex-Palantir AI execs raise $12 million seed round for Perceptic, a startup automating drug discovery
3 months ago
Air Street Press
State of AI: May 2026
4 months ago
Osborne Clarke
Osborne Clarke advises Air Street Capital on seed investment in Interloom’s enterprise AI memory platform
4 months ago
Dealroom
Air Street Capital raises $232M, becomes Europe's largest solo GP venture firm
4 months ago
Morgan Lewis
Morgan Lewis Advises Air Street on Third Venture Capital Fund Formation
5 months ago
Tech Funding News
Synthesia, Wayve backer Air Street closes $232M fund to become Europe’s largest solo GP AI investor
5 months ago
mexc.co
Air Street Capital Soars: $232M Fund Cements Its Status as a European Solo VC Powerhouse
5 months ago
StartupHub.ai
Air Street Capital Closes $232M Fund III
5 months ago
MLQ.ai
Air Street Capital Closes $232 Million Fund III, Setting European Solo GP Record
5 months ago
TechCrunch
Air Street becomes one of the largest solo VCs in Europe with $232M fund
5 months ago
UKTN
Air Street Capital’s new £175m fund to back ‘AI-first companies’
5 months ago
EU-Startups
German startup Interloom lands €14.2 million Seed funding for AI agent knowledge infrastructure
5 months ago
Tech.eu
Nathan Benaich's Air Street raises $232M Fund III, becoming Europe’s largest solo GP venture firm
5 months ago
Air Street Press
Air Street Capital announces $232M Fund III to back AI-first companies
5 months ago
Sifted
Air Street Capital closes $232m solo GP fund — Europe’s largest
5 months ago
Technology Magazine
Why Google & NVIDIA Back Startup Synthesia’s US$4bn AI Push
7 months ago
Air Street Press
2025 Year in Review
7 months ago
Air Street Press
Our investment in Clove
9 months ago
SiliconANGLE
Profluent Bio raises $106M from Jeff Bezos and others to accelerate protein design with AI
9 months ago
NVIDIA
NVIDIA Announces £2 Billion Investment in the United Kingdom AI Startup Ecosystem
11 months ago
NVIDIA Newsroom
NVIDIA Announces £2 Billion Investment in the United Kingdom AI Startup Ecosystem
11 months ago
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Research briefRead more
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