Hottest Startups - Sep 2026

A monthly report showcasing the most promising startups capturing the attention of VC, PE, and angel investors. Leveraging our Investor Interest Signals product, we analyse which startups have garnered the highest interest from prominent investors over the past 90 days.

1 Cosmic Labs ↗ Cosmic Labs builds quantum-trained network optimization software.

Signal: Headcount Scale Up, Recent Funding, Social Followers Surge, Top-Tier Investors Founders: Kislay Parashar, Meg McNulty Investors: 500 Global Web Visits: ~3K     Headcount: ~11

🔥 Attracting interest from 10 VC firms over the past 90 days

2 Atomarine ↗ Offshore power for AI datacenters

Signal: Media Spotlight, Recent Funding, Recent News, Social Followers Surge, Top-Tier Investors Founders: Emile Germonpré, Dimitris Koutentakis Funding: $500K; Investors: Y Combinator Web Visits: ~2K     Headcount: ~3

🔥 Attracting interest from 9 VC firms over the past 90 days

3 Energy ↗ Energy turns conversations into finished work.

Signal: No Funding Founders: Gabriel Petersson, David Fant Web Visits: ~38K     Headcount: ~3

🔥 Attracting interest from 9 VC firms over the past 90 days

4 PRINCEPS ↗ AI-native infrastructure for energy compliance and operational resilience.

Signal: Recent Funding, Social Followers Surge, Top-Tier Investors Founders: Conrad Frøyland Moe, Anya Trofimova, Wilhem Hector Funding: $500K; Investors: Y Combinator Web Visits: ~3K     Headcount: ~4

🔥 Attracting interest from 8 VC firms over the past 90 days

5 Nori Robotics ↗ Nori L2 autonomously handles household chores.

Signal: Recent Funding, Social Followers Surge, Top-Tier Investors Founders: Antonio Li Funding: $500K; Investors: Y Combinator Web Visits: ~22K     Headcount: ~6

🔥 Attracting interest from 8 VC firms over the past 90 days

6 Weco AI ↗ Weco AI enables autoresearch with AI agents for autonomous model optimization.

Signal: No Recent Funding, Social Followers Surge, Top-Tier Investors, Web Traffic Momentum Founders: Zhengyao Jiang, Yuxiang Wu Funding: $9.3M; Investors: BoxGroup, Founder Collective, Golden Ventures, Koro Capital Ltd, Night Capital, Scott Belsky, Third Kind Venture Capital, Twin Path Ventures Web Visits: ~18K     Headcount: ~10

🔥 Attracting interest from 7 VC firms over the past 90 days

7 mimic ↗ Mimic provides AI-powered robotic automation for manufacturing and logistics.

Signal: Headcount Surge, No Recent Funding, Social Followers Surge, Top-Tier Investors Founders: Stephan-Daniel Gravert, Stefan Weirich, Elvis Nava, Robert Katzschmann, Benedek Forrai Funding: $27.7M; Investors: 10x Founders, 1st Kind, 2100 Ventures, Amazon Web Services, CES, ESA Business Incubation Centre Switzerland, Elaia, Founderful, Innosuisse, Sequoia Scout, Speedinvest, Tiny Supercomputer Investment Company, Venture Kick, another.vc Web Visits: ~29K     Headcount: ~89

🔥 Attracting interest from 6 VC firms over the past 90 days

8 Twin ↗ Twin builds AI agents that automate tasks across any web application without custom APIs or RPA.

Signal: Headcount Surge, No Recent Funding, Social Followers Momentum, Top-Tier Investors, Web Traffic Scale Up Founders: Joao Justi, Hugo Mercier Funding: $12.8M; Investors: Andrena Ventures, Betaworks, Charles Gorintin, Clem Delangue, Drysdale Ventures, Factorial Capital, Florian Douetteau, Fresh Ventures, Irregular Expressions, Irwan Bello, Kima Ventures, LocalGlobe, Mehdi Ghissassi, Motier Ventures, Olivier Pomel, Pareto Holdings, Philippe Corrot, Quentin Nickmans, Rand Hindi, Rodolphe Saadé, Romain Huet, Romuald Elie, Thibaud Elziere, Thomas Wolf, Yan-David Erlich Web Visits: ~66K     Headcount: ~27

🔥 Attracting interest from 6 VC firms over the past 90 days

9 Reflect Orbital ↗ Reflect Orbital enables on-demand illumination by redirecting sunlight from orbit.

Signal: Headcount Scale Up, Media Spotlight, No Recent Funding, Recent News, Social Followers Surge, Top-Tier Investors Founders: Tristan Semmelhack, Ben Nowack Funding: $28.7M; Investors: Baiju Bhatt, Climate Capital, Keenan Wyrobek, Keller Rinaudo Cliffton, Kevin Hartz, Lux Capital, Nicholas Donahue, Richard Burton, Sequoia Capital, Starship Ventures, Winklevoss Capital Web Visits: ~114K     Headcount: ~71

🔥 Attracting interest from 6 VC firms over the past 90 days

10 INT21 ↗ INT21 generates and optimizes GPU kernel software with autonomous AI agents.

Signal: No Funding Founders: Bing Xu, Qingye Jiang Headcount: ~2

🔥 Attracting interest from 6 VC firms over the past 90 days

11 Hyperspell ↗ Hyperspell connects tools and builds a real-time context graph accessible as a filesystem.

Signal: Headcount Momentum, No Recent Funding, Recent News, Social Followers Surge Founders: Manu Ebert, Conor Brennan-Burke Funding: $500K Web Visits: ~9K     Headcount: ~11

🔥 Attracting interest from 5 VC firms over the past 90 days

12 Eka Robotics ↗ Eka Robotics enables self-learning robotics software for physical-world intelligence.

Signal: Headcount Surge, No Recent Funding, Social Followers Surge Founders: Tuomas Haarnoja, Pulkit Agrawal Funding: $13M; Investors: E14 Fund, Sabrina Hahn Web Visits: ~10K     Headcount: ~33

🔥 Attracting interest from 5 VC firms over the past 90 days

13 tacit labs ↗ Tacit enables frontier labs to develop LLM capabilities for life sciences.

Signal: Headcount Surge, No Funding, Social Followers Surge Founders: Anne Marie Droste, Nicole Fitzgerald Web Visits: ~8K     Headcount: ~38

🔥 Attracting interest from 5 VC firms over the past 90 days

14 Stone Power ↗ Turbine maker builds AI-enabled natural gas and advanced nuclear turbines.

Signal: Headcount Surge, No Funding, Social Followers Surge Founders: Dylan Morris Web Visits: ~3K     Headcount: ~12

🔥 Attracting interest from 5 VC firms over the past 90 days

15 Lava ↗ Lava enables enterprises to manage and secure their data center and AI infrastructure.

Signal: Headcount Momentum Founders: Yakir Kadkoda, Elay Gliksberg Funding: $8.25M; Investors: Boldstart Ventures Headcount: ~16

🔥 Attracting interest from 5 VC firms over the past 90 days

16 UMA ↗ UMA develops general-purpose humanoid and mobile robots with human-level dexterity.

Signal: Headcount Surge, No Recent Funding, Social Followers Surge, Top-Tier Investors Founders: Rob Knight, Remi Cadene, Simon Alibert, Pierre Sermanet Investors: >comit, ALM Ventures, Drysdale Ventures, Factorial Capital, Greycroft, Kima Ventures, Olivier Pomel, Relentless, Unity Growth Fund LLC Headcount: ~33

🔥 Attracting interest from 4 VC firms over the past 90 days

17 Durine ↗ Durin builds automated drilling rigs to accelerate mineral discovery.

Signal: No Recent Funding, Top-Tier Investors Founders: Ted Feldmann, David Venegas Funding: $3.4M; Investors: 1517 Fund, 8090 Industries, Andreessen Horowitz, BBQ Capital, Bedrock, Champion Hill Ventures, Contrary, Day One Ventures, Founders Factory, Jackson Moses, Lux Capital Web Visits: ~3K     Headcount: ~26

🔥 Attracting interest from 4 VC firms over the past 90 days

18 Tachyon ↗ Tachyon builds advanced particle accelerators for space tech.

Signal: Recent Funding Founders: Finn Murphy, Ian Blumenfeld, niv levy Investors: Scribble Ventures Headcount: ~4

🔥 Attracting interest from 4 VC firms over the past 90 days

19 Inco AI ↗ Inco AI reimagines inference for the agentic era.

Signal: No Funding Founders: Zhijian Liu Web Visits: ~40K     Headcount: ~6

🔥 Attracting interest from 4 VC firms over the past 90 days

20 Chakra Labs ↗ Chakra Labs builds high-fidelity AI research environments and trajectories.

Signal: Headcount Surge, No Recent Funding Founders: Nirmal Krishnan, Alexander Fung Funding: $10.1M Web Visits: ~5K     Headcount: ~16

🔥 Attracting interest from 3 VC firms over the past 90 days