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Top startup and tech funding news - December 3, 2025. It's Wednesday, December 3, 2025, and Tech Startups is back with the top startup and tech funding news stories spanning longevity biotech, AI-native agents, construction automation, crypto finance, encrypted data infrastructure, and synthetic biology. From pre-seed to Series B, today's deals reflect sharp investor focus on real-world AI deployment, permissionless finance, and next-gen enterprise automation. TRIANA Biomedicines led the day with a $120 million Series B to advance its molecular glue degrader therapies targeting cancer. Antithesis followed with a massive $105 million Series A to scale its AI simulation platform for software testing, while PermitFlow raised $54 million to automate building permitting through intelligent agents. AI agents and agentic platforms dominated early-stage activity. Simular raised $21.5 million for its cross-platform desktop automation assistant, and Gradial closed a $35 million Series B to orchestrate marketing ops using modular AI workflows. Meanwhile, Ostium raised $20 million to bring perpetual swaps onchain, and Fin secured $17 million to power high-speed global payments via stablecoins. The deep tech frontier also showed momentum: Niobium raised $23 million for encrypted silicon, Aether added $15 million to expand its AI-designed proteins for industrial reindustrialization, and Autolane pulled in $7.4 million to build autonomous vehicle curb infrastructure. Funding Highlights * TRIANA Biomedicines raised $120 million in Series B funding to develop epigenetic cancer therapies. * Antithesis secured $105 million in Series A funding for AI-based software testing simulation. * PermitFlow closed $54 million in Series B funding to scale AI-driven construction permitting. * Gradial raised $35 million in Series B funding for AI marketing workflow agents. * Ostium raised $20 million in Series A funding for onchain perpetual swaps. * Fin secured $17 million in Series A funding for stablecoin-powered global payments. * Niobium raised over $23 million in seed funding for FHE-accelerated compute hardware. * Simular raised $21.5 million in Series A funding for cross-platform personal AI agents. * Aether Biomachines raised $15 million in new equity funding to develop synthetic protein factories. * Autolane secured $7.4 million in seed funding for autonomous curbside operations. * Orq.ai raised €5 million in seed funding to operationalize enterprise AI agents. * Hachiko raised $2.5 million in seed funding to optimize battery storage infrastructure. * SereneDB secured $2.1 million in pre-seed funding for real-time analytical search databases. Today's financings brought together global venture leaders, deep tech funds, crypto-native backers, and crossover investors doubling down on foundational systems for compute, biotech, automation, and programmable finance. Startups deploying production-grade agents, privacy-preserving chips, and RWA tokenization protocols attracted serious capital at both early and growth stages. As Q4 nears its close, momentum is building across frontier sectors where technical defensibility and economic scalability intersect. Here's the full breakdown of today's funding stories.

Accel leads $54m series B in US AI startup PermitFlow. PermitFlow, a US-based construction software company, has raised US$54 million in a series B round led by Accel, with participation from Kleiner Perkins, Felicis, Initialized Capital, Altos Ventures, Y Combinator, and other existing investors. The company plans to use the new capital to grow its team and expand its technology offerings. Founded in 2021, PermitFlow develops AI-driven tools to automate permitting and other construction workflows. The company reports that its platform has powered over US$20 billion in construction value nationwide. PermitFlow works with major clients such as Amazon, Lennar, Ikea, Service Experts, and Toll Brothers. PermitFlow previously raised a series A round last year. Food for thought. Series B lacks traction metrics in a crowded permitting market. * PermitFlow raised $54M in Series B 1 after a $31M Series A about a year earlier 2. The announcement omits valuation plus updated Annual Recurring Revenue (ARR) or customer counts, which matters after a 2023 shakeout that followed a 35% drop in existing home sales in November 2022 per the National Association of Realtors (NAR) 3. * The $20B "construction value" likely means the total value of projects processed on PermitFlow, not revenue or gross transaction volume. Pulley is a permitting-automation startup that raised a $4.4M seed in 2022, while GreenLite is a permit management software provider in the same niche within a $1.6T market with a ~$50B "faster permits" opportunity 24. * PermitFlow posted 20x ARR growth in 2023 2, yet it has not shared 2024 - 2025 updates amid high rates and softer deal activity 3. API and integration partners can plug into PermitFlow's growth. * Integration boutiques (specialist software consultancies) and Independent Software Vendors (ISVs) can use PermitFlow's Procore Marketplace link 56. Developers can build add-ons for permit tracking, municipal compliance databases, or document automation that fit into its workflows. Procore supports 1 million+ projects and $1 trillion+ in volume 6. * AI firms and Large Language Model (LLM) service providers can help because PermitFlow embeds LLMs to parse municipal rules, then guide permit prep 2. Firms that fine-tune models for regulatory text or build domain-specific knowledge graphs (structured representations of entities and their relationships) can partner as it expands its "geographically localized software architecture" across U.S. jurisdictions 2. * Service Organization Control 2 (SOC 2) compliance signals an enterprise security focus 1. That opens work for security, compliance, and data protection vendors as the company handles sensitive project data. How would you feel if you could no longer use Tech in Asia?