| Serverless computing platform for building and deploying AI agents |
| Charles Drappier, Thomas Crochet, Christophe Ploujoux, Mathis Joffre |
| Undisclosed |
| Active |
| https://blaxel.ai |
| S25 |
| https://www.ycombinator.com/companies/blaxel |
| Browser Use | AI Agent Tools | Leading open-source browser automation framework for AI agents (50K+ GitHub stars) | Magnus Muller, Gregor Zunic | $17M (Seed, Mar 2025) | Active | https://browser-use.com | W25 | https://www.ycombinator.com/companies/browser-use |
| Bubble Lab | AI Agent Tools | Open-source, TypeScript-native agentic workflow builder | Selina Li, Hani P Jamal, Zach Zhong | $500K | Active | https://bubblelab.ai | W26 | https://www.ycombinator.com/companies/bubble-lab |
| Composio | AI Infrastructure | Integration platform giving AI agents 10K+ tool connections | Karan Vaidya, Soumik Rakshit | $29M (Series A, Jul 2025) | Active | https://composio.dev | W24 | https://www.ycombinator.com/companies/composio |
| Compresr | AI Infrastructure | LLM-native context compression infrastructure to reduce token costs at scale | Kamel Charaf, Oussama Gabouj, Berke Argın, Ivan Zakazov | Undisclosed | Active | https://compresr.ai | W26 | https://www.ycombinator.com/companies/compresr |
| Delty | AI-Native Product | AI staff engineer for enterprises — system-level architectural reasoning | Lalit Kundu, Catherine Zhao | Undisclosed | Active | https://delty.ai | S25 | https://www.ycombinator.com/companies/delty |
| Ema | AI Agent Tools | Universal AI employee for enterprise workflows (HR, support, data management) | Surojit Chatterjee, Alice Li | $61M total (Series A) | Active | https://www.ema.co | W24 | https://www.ycombinator.com/companies/ema-unlimited |
| Firecrawl | AI Infrastructure | Web data API that converts websites into clean, structured data for AI agents | Caleb Peffer, Eric Ciarla, Nicolas Silberstein Camara | $14.5M (Series A, Aug 2025) | Active | https://www.firecrawl.dev | S24 | https://www.ycombinator.com/companies/firecrawl |
| Hamming AI | AI Infrastructure | Experimentation platform for testing and improving voice AI agents | Sumanyu Sharma | $3.8M (Seed) | Active | https://hamming.ai | W24 | https://www.ycombinator.com/companies/hamming |
| Janus | AI Infrastructure | AI agent testing platform using human simulation to detect hallucinations | Caglar Cokcetin | Undisclosed | Active | https://withjanus.com | S25 | https://www.ycombinator.com/companies/janus |
| Klavis AI | AI Infrastructure | Open-source infrastructure for Model Context Protocol (MCP) integration | Lawrence Lou, Xiangkai Zeng | Undisclosed | Active | https://klavis.ai | S25 | https://www.ycombinator.com/companies/klavis-ai |
| K-Scale Labs | AI Infrastructure | Open-source humanoid robot platform for general-purpose robotics | Benjamin Bolte, Pawel Budzianowski, Matthew Freed | $500K+ (Pre-Seed) | Active | https://kscale.dev | W24 | https://www.ycombinator.com/companies/k-scale-labs |
| Laminar | AI Infrastructure | LLM pipeline observability and evaluation infrastructure | Robert Kim, Din Mailibay | Undisclosed (Salesforce Ventures, Tiger Global) | Active | https://lmnr.ai | S24 | https://www.ycombinator.com/companies/laminar |
| Marr Labs | AI Agent Tools | AI voice agents that enhance customer interactions and streamline operations | Dave Grannan, Han Shu | $500K (Pre-Seed) | Active | https://marrlabs.com | W24 | https://www.ycombinator.com/companies/marr-labs |
| Mastra | AI Infrastructure | JavaScript/TypeScript framework for building AI agents (from the Gatsby team) | Abhi Aiyer | Undisclosed | Active | https://mastra.ai | W25 | https://www.ycombinator.com/companies/mastra |
| Melty | AI-Native Product | Open-source AI pair programmer with multi-model chat for developers | Charlie Holtz, Jackson de Campos | $500K (Pre-Seed) | Active | https://melty.sh | S24 | https://www.ycombinator.com/companies/melty |
| Minicor | AI Agent Tools | Platform for building and running desktop automations at scale via one API call | Not yet publicly disclosed | ~$500K (YC standard) | Active | https://minicor.com | W26 | https://www.ycombinator.com/companies/minicor |
| Pipeshift | AI Infrastructure | Modular orchestration platform for deploying open-source AI components | Arko C, Enrique Ferrao, Pranav Reddy | $2.5M (Seed) | Active | https://pipeshift.com | S24 | https://www.ycombinator.com/companies/pipeshift |
| Quivr | AI Infrastructure | Transforms enterprise knowledge into personal AI assistants (RAG platform) | Stan Girard, Antoine Dewez, Brian Laleye | Seed (undisclosed) | Active | https://quivr.app | W24 | https://www.ycombinator.com/companies/quivr |
| Retell AI | AI Agent Tools | Platform for building and managing AI voice agents for contact centers | Bing Wu, Todd Li, Evie Wang | ~$5M (Seed); $3M ARR | Active | https://www.retellai.com | W24 | https://www.ycombinator.com/companies/retell-ai |
| RowBoat Labs | AI Agent Tools | Multi-agent customer support platform with agent collaboration | Arjun Maheswaran, Ramnique Singh, Akhilesh Sudhakar | $500K (Pre-Seed) | Active | https://rowboatlabs.com | S24 | https://www.ycombinator.com/companies/rowboat-labs |
| Sim Studio | AI Agent Tools | Open-source platform for building and launching agentic workflows | Emir Karabeg, Adam Gough | Undisclosed | Active | https://simstudio.ai | S25 | https://www.ycombinator.com/companies/sim-studio |
Company Name | Category | Description | Founders | Status | YC Batch | Funding Raised | Website | YC Page URL |
|---|