| https://www.phind.com/ | Phind | An AI-powered search engine built specifically for developers, using multi-step reasoning to answer coding questions and cite sources from Stack Overflow, GitHub issues, and technical documentation. | 11000000 | 2026-01-16 | Ran out of money after failing to defend its moat: foundation-model providers (OpenAI, Google, Anthropic) added web search, making a dedicated developer search engine redundant. |
| Cartwheel Robotics | Yogi, a compact bipedal toddler-like social humanoid robot for companionship and public spaces (plus Speedy variant) | 3000000 | 2026-02-05 | Failed to secure funding/Series A; ran out of capital for capital-intensive humanoid hardware; creditors forced involuntary bankruptcy as Figure AI, Apptronik, 1X and Sanctuary AI absorbed the category's capital |
| https://www.soulmachines.com/ | Soul Machines | AI 'Digital People' avatars — human-like AI assistants for customer service, powered by a Digital Brain | 135000000 | 2026-02-05 | Steamrolled by LLMs; KPMG receivers appointed after years of losses |
| https://www.kintsugihealth.com/ | Kintsugi | Voice biomarker technology to detect depression and anxiety from how people speak | 30000000 | 2026-02-11 | Shut down after ~4 years waiting for FDA De Novo clearance that never came; open-sourced all code and research |
| Cydoc | A HIPAA-compliant AI-native EHR for web, Android, and iOS, featuring a Smart Patient Intake Form that automatically takes a patient's history and generates a clinical note for the doctor. | 265000 | 2026-02-21 | Ran out of money: unsustainable unit economics, as each practice's EHR integration cost $4,000–$6,000 against a sub-$100/month subscription (the founder ruled out integrating with incumbent EHRs like Epic for years), plus delayed customer discovery and no moat. |
| https://vercept.com | Vercept | Vy, a cloud computer-use AI agent (built on the VyUI interface-recognition model) that operates apps and controls a remote MacBook via screenshots, without APIs | 50000000 | 2026-03-25 | Acquired by Anthropic (announced Feb 25, 2026) to advance Claude's computer-use capabilities; external product wound down with 30-day customer notice, team acqui-hired |
| https://www.yupp.ai/ | Yupp | A free crowdsourced AI model-comparison playground that let users test and compare responses from 800+ AI models side by side, vote on the best answers, and earn cryptocurrency for their feedback. | 33000000 | 2026-03-31 | Never reached strong enough product-market fit to survive, in part because AI models improved so rapidly; the industry shifted toward hiring expert humans for RL feedback and building for agentic systems. |
| https://weights.gg | Weights | Community voice-cloning and AI-music platform (weights.gg) | 4000000 | 2026-03-31 | Never profitable; consent-free celebrity voice library a liability as deepfake laws tightened; OpenAI later bought tech and ~6 engineers |