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It’s Wednesday, October 22, 2025, and we’re back with the top startup and tech funding news stories making waves today. From AI research labs to enterprise automation, insurtech, marine energy, and senior-care platforms, investors continued to pour capital into both late-stage giants and rising early-stage players. Today’s highlights include: OpenEvidence’s $200 million Series C at a $6 billion valuation to advance clinical-AI, Uniphore’s $260 million Series F led by NVIDIA, AMD, Snowflake, and Databricks for enterprise conversational AI, and Silkline’s $4 million seed to deploy AI in manufacturing supply chains. On the global stage, Irish startup Bronto raised $14 million in seed funding for its AI log-data platform, while clean-energy startup Sizable Energy secured $8 million for ocean-based energy-storage innovation. Funding Highlights OpenEvidence closed a $200 million Series C to scale its AI medical platform reach. Uniphore raised $260 million in a Series F round to deepen enterprise AI automation. Silkline landed $4 million in seed funding to accelerate AI in manufacturing supply chains. Bronto grabbed $14 million in seed to launch its AI-native log analytics platform. Sizable Energy secured $8 million for its novel ocean-based pumped hydro energy solution. Investor Activity Today’s rounds featured participation from prominent venture capital firms, tech giants, and strategic corporate backers — including Google Ventures, Sequoia Capital, Kleiner Perkins, NVIDIA, AMD, Snowflake, Databricks, Andreessen Horowitz, Meritech Capital and Playground Global. Strategic investors and traditional funds alike doubled down on bold bets across sectors ranging from AI infrastructure and enterprise software to climate tech and insurtech. Together, these financings illustrate continued conviction across enterprise AI, healthtech, cleantech, and B2B SaaS — sectors that remain magnetically attractive to capital. Here’s the full breakdown. Until tomorrow, keep on building. Letterhead Raises $34M Series A Funding for Newsletter Platform Letterhead, a Miami-based startup building a “newsletter operating system,” has raised $34 million in Series A funding to accelerate growth. The company’s platform helps companies launch and monetize multiple email newsletters, improving subscriber engagement and revenue. The funding round was led by PeakSpan Capital. Letterhead will use the capital to expand its engineering and marketing teams and enhance its product as it scales. Funding Details: Startup: Letterhead (newsletter/email platform) Investors: PeakSpan Capital (lead) Amount Raised: $34 million Total Raised: Not disclosed (prior seed ~$5.3 M) Funding Stage: Series A Funding Date: October 22, 2025 UnifyApps Raises $50M in Series B Funding for Enterprise AI Automation UnifyApps, a San Francisco AI startup that automates routine enterprise workflows, has secured $50 million in a Series B funding round at a roughly $250 million valuation. The round was led by WestBridge Capital and coincides with Sprinklr founder Ragy Thomas joining UnifyApps as co-CEO. UnifyApps’ platform connects systems like Salesforce and Workday to large language models to speed up tasks such as claims processing and supply-chain workflows. The new funding will allow the company to grow its ~400-person team by adding 110 staff, expand into European markets, and further develop its AI-based automation platform. Founded in 2023, just months after ChatGPT set off the generative AI boom, UnifyApps calls itself an “enterprise operating system for AI.” The idea is simple but ambitious—make AI actually useful inside big companies. Instead of sitting in silos, the company’s platform connects major enterprise tools like Salesforce, Workday, and ServiceNow to large language models and then feeds those results into the tools employees already use. The goal is to automate repetitive, rule-based tasks such as claims processing, HR updates, and supply chain optimization, freeing teams to focus on higher-value work. Funding Details: Startup: UnifyApps (enterprise AI automation) Investors: WestBridge Capital (lead), ICONIQ Ventures (participant) Amount Raised: $50 million Total Raised: ~$81 million (including prior rounds) Funding Stage: Series B Funding Date: October 22, 2025 Silkline Raises $4M in Seed Funding to Expand AI Supply Chain Tools Silkline, a Seattle startup applying AI to manufacturing supply chains, announced a $4 million seed funding round. The company’s platform helps advanced manufacturers reduce production delays by automating sourcing, quotes, and order management with machine learning. Silkline’s customers include firms in aerospace, defense, and robotics. The round was led by Origin Ventures, with participation from Forward Deployed VC, 25madison, Matchstick Ventures, Barrel Venture,s and Plow Ventures. The new capital will accelerate the development of Silkline’s AI capabilities and support its rapid growth following fivefold year-over-year revenue increases. Funding Details: Startup: Silkline (AI supply-chain platform) Investors: Origin Ventures (lead), Forward Deployed VC, 25madison, Matchstick Ventures, Barrel Ventures, Plow Ventures Amount Raised: $4 million Total Raised: $4 million Funding Stage: Seed Funding Date: October 22, 2025 Sumble Emerges with $38.5M in Funding for AI Sales Intelligence Sumble, a San Francisco startup founded by Kaggle creators Anthony Goldbloom and Ben Hamner, emerged from stealth with $38.5 million in total funding. The company provides a sales intelligence platform that crawls the web for technographic and contact data, giving sales teams context on prospective customers. Coatue Management led an $8.5 million seed round, and Canaan Partners led a $30 million Series A, with participation from investors including AIX Ventures, Square Peg, Bloomberg Beta, Zetta Ventures, and angel backers Marc Benioff and Nat Friedman. Sumble reports strong traction (19 enterprise customers such as Snowflake and Elastic) and will use the funding to scale its data platform and grow its go-to-market efforts. Funding Details: Startup: Sumble (AI sales intelligence) Investors: Canaan Partners (Series A lead), Coatue Management (seed lead), AIX Ventures, Square Peg, Bloomberg Beta, Zetta Ventures, Marc Benioff (angel), Nat Friedman (angel) Amount Raised: $38.5 million (total) Total Raised: $38.5 million Funding Stage: Seed and Series A Funding Date: October 22, 2025 Starbridge Raises $42M Series A to Digitize Public Sector Sales Data Starbridge, a Chicago-based govtech startup, has closed a $42 million Series A round led by David Sacks’ Craft Ventures. The platform aggregates fragmented public sector procurement and budget data into one interface for private-sector sales teams. With the new capital, Starbridge plans to expand its engineering and sales teams to better serve customers looking to sell to schools and government agencies. Other investors in the round include Owl Ventures, CommonWeal Ventures, and Autotech Ventures. The round brings Starbridge’s total funding to $52 million. Sumble’s platform goes beyond traditional sales data tools. It continuously scans tens of millions of public data sources to map out organizational structures, tech stacks, and live technology initiatives such as cloud migrations and GenAI projects. By translating those findings into actionable insights, Sumble helps sales teams know who to contact, when to reach out, and why that moment matters. Funding Details: Startup: Starbridge (public sector sales intelligence) Investors: Craft Ventures (lead), Owl Ventures, CommonWeal Ventures, Autotech Ventures Amount Raised: $42 million Total Raised: $52 million Funding Stage: Series A Funding Date: October 22, 2025 Sizable Energy Secures $8M to Build Ocean-Based Energy Storage Sizable Energy, an early-stage clean-energy startup, raised $8 million in funding to develop its ocean-based energy storage technology. The company’s “hourglass” design uses two flexible water reservoirs—one anchored to the seabed, one floating on the surface—and pumps seawater between them to store and release power (leveraging pressure differences from salt concentration). Playground Global led the round, with participation from EDEN/IAG, Exa Ventures, Satgana, Unruly Capital, and Verve Ventures. Sizable will use the funds to advance its prototype development and prepare for larger-scale offshore energy storage projects. Funding Details: Startup: Sizable Energy (marine pumped hydro energy) Investors: Playground Global (lead), EDEN/IAG, Exa Ventures, Satgana, Unruly Capital, Verve Ventures Amount Raised: $8 million Total Raised: $8 million Funding Stage: Seed Funding Date: October 22, 2025 Bronto Raises $14M in Seed Funding for AI-Native Log Data Platform Bronto, an Irish B2B SaaS startup, secured $14 million in seed funding to launch its AI-native log data platform. Founded in 2025 by Noel Ruane and Trevor Parsons, the Dublin-based company builds a unified logging layer that can store, search, and analyze petabytes of machine data in real time. The seed round was led by Bellevue-based Cercano Management Venture Capital, with follow-on funding from Heavybit and Conviction Capital. Bronto will use the capital to expand its engineering team, accelerate product development, and grow sales in Ireland and the U.S. Funding Details: Startup: Bronto (AI log data analytics) Investors: Cercano Management (lead), Heavybit, Conviction Capital Amount Raised: $14 million Total Raised: $14 million Funding Stage: Seed Funding Date: October 22, 2025 OpenEvidence Raises $200M in Series C Funding at $6B Valuation for Medical AI OpenEvidence, an AI-powered clinical decision support platform, announced a $200 million Series C round on a reported $6 billion valuation. The Boston/Miami startup’s AI chatbot helps clinicians quickly access medical knowledge (trained on journals like JAMA) to improve diagnoses and care. Google Ventures led the round and also recently led OpenEvidence’s July Series B; new participants include Sequoia Capital, Kleiner Perkins, Blackstone, Thrive Capital, Coatue Management, BOND, and Craft Ventures. OpenEvidence (founded in 2022 by Daniel Nadler) is now used in over 15 million clinical consultations per month. With this latest funding, its total capital raised is about $500 million, which will be invested in product development and international expansion. Founded in 2021, OpenEvidence is focused on organizing and expanding access to medical knowledge, offering an AI assistant that helps doctors make informed decisions at the point of care. The platform has already gained traction, with hundreds of thousands of verified physicians across more than 10,000 U.S. healthcare centers relying on it. Unlike general-purpose AI models, OpenEvidence is trained on specialized medical content, including material from the New England Journal of Medicine, through exclusive partnerships. The tool is available at no cost to verified doctors in the U.S. Funding Details: Startup: OpenEvidence (AI medical platform) Investors: Google Ventures (lead), Sequoia Capital, Kleiner Perkins, Blackstone, Thrive Capital, Coatue Management, BOND, Craft Ventures Amount Raised: $200 million Total Raised: ~$500 million Funding Stage: Series C Funding Date: October 22, 2025 FurtherAI Raises $25M Series A Led by a16z to Automate Insurance Workflows FurtherAI, a Boston-based insurtech startup, closed a $25 million Series A round led by Andreessen Horowitz (a16z). This financing – coming just six months after a $5 million seed round – brings FurtherAI’s total funding to $30 million. The company’s AI-native platform automates insurance underwriting, claims, and policy workflows by reading documents and routing tasks. Nexus Venture Partners and Y Combinator also participated in the round. FurtherAI will deploy the capital to expand its library of insurance-specific AI workflows, deepen integrations with carriers and brokers, and scale its engineering and sales teams to meet growing demand. Funding Details: Startup: FurtherAI (insurance AI platform) Investors: Andreessen Horowitz (lead), Nexus Venture Partners, Y Combinator Amount Raised: $25 million Total Raised: $30 million Funding Stage: Series A Funding Date: October 22, 2025 David AI Raises $50M Series B to Advance Audio AI Models David AI, a data startup focused on audio AI, has raised $50 million in a Series B round led by Meritech Capital. The company calls itself the world’s first dedicated audio data research lab, building the large-scale datasets and evaluation tools needed to train next-generation speech and sound AI models. Other investors in the round include NVIDIA, Alt Capital, First Round Capital, Amplify Partners, and Y Combinator. David AI will use the funding to expand its research infrastructure and collaborations with leading AI labs, addressing key bottlenecks in speech recognition, emotion detection, and multilingual audio understanding. Funding Details: Startup: David AI (audio data research) Investors: Meritech Capital (lead), NVIDIA, Alt Capital, First Round Capital, Amplify Partners, Y Combinator Amount Raised: $50 million Total Raised: $50 million Funding Stage: Series B Funding Date: October 22, 2025 Sensi.AI Closes $45M in Series C Funding for AI-Driven Senior Care Platform Sensi.AI, a Palo Alto-based startup, secured $45 million in a Series C round led by Qumra Capital. The company’s “Care Intelligence” platform uses AI and audio analytics to monitor seniors’ health and predict care events, enabling assisted-living providers to automate operations. Existing backers Insight Partners, Zeev Ventures, Entrée Capital, Flint Capital, and Jibe Ventures also joined the round, bringing Sensi.AI’s total funding to over $98 million. Having achieved 400% revenue growth, Sensi.AI plans to use the Series C funds to expand beyond in-home care into assisted and independent living facilities and continue building out its data-driven senior care solutions. Funding Details: Startup: Sensi.AI (AI senior care) Investors: Qumra Capital (lead), Insight Partners, Zeev Ventures, Entrée Capital, Flint Capital, Jibe Ventures Amount Raised: $45 million Total Raised: >$98 million Funding Stage: Series C Funding Date: October 22, 2025 Uniphore Closes $260M Series F Led by NVIDIA, AMD, Snowflake, and Databricks Uniphore, an enterprise conversational AI platform, announced a $260 million Series F funding round led by tech giants NVIDIA, AMD, Snowflake, and Databricks. The round also included participation from financial investors like NEA, March Capital, BNF Capital, National Grid Partners, and Prosperity7 Ventures, valuing Uniphore at $2.5 billion. Uniphore’s “Business AI Cloud” helps companies deploy AI-driven virtual assistants and automate back-office workflows. The new capital will accelerate innovation on Uniphore’s AI and data platform, support recent acquisitions (ActionIQ, Infoworks, Orby AI, Autonom8), and scale its global enterprise customer base. Funding Details: Startup: Uniphore (enterprise AI) Investors: NVIDIA, AMD, Snowflake, Databricks (co-leads), NEA, March Capital, BNF Capital, National Grid Partners, Prosperity7 Ventures Amount Raised: $260 million Total Raised: $260 million Funding Stage: Series F Funding Date: October 22, 2025 Tech Funding Summary Table
