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HydraDB is building the graph-native context and memory infrastructure for AI. AI is stateless — HydraDB fixes that with graphs: instead of similarity search over a vector store, it builds structured context graphs of entities, relationships, temporal states, and causal chains, returning relevance instead of similarity. The product is a GraphDB built on object storage with a tiered architecture (in-memory cache → NVMe → object storage), git-style temporal versioning, and entity resolution — roughly 10x cheaper and purpose-built for modern AI workloads. Born out of research at Stanford, HydraDB has raised $6.5M from investors including Jeff Dean, Sky9 Capital, and researchers from OpenAI and DeepMind. Over 2,000 developers build on it today, with 1B+ documents ingested.

SCAILE is an AI visibility company building infrastructure to make brands visible in AI search, with a mission to make every brand the answer in AI search. It aims for brands to be discovered, cited, and recommended by AI systems such as ChatGPT, Perplexity, and Google AI Overviews, and is live with clients including Beurer, Building Radar, and Lyceum Technologies. The company counts Google Cloud for Startups and NCA among its backers and is trusted by 40+ companies across 14+ industries. The founder-led team, based in Munich and Hamburg, includes co-founders Simon Wilhelm (CEO), August Gutsche (CPO), and Anton Billstein, with backgrounds at BCG and La Famiglia VC. SCAILE is supported by programs such as IFB Innovationsstarter, Microsoft Founders Hub, Notion Startups, and TUM Venture Labs / TUM.ai, and has a team size of approximately 8-12 people.

Arbio, headquartered in Berlin, Germany, is building an AI-native property management platform for short-term rentals across Europe. It currently manages over 1,000 apartments and operates real properties in Berlin, Hamburg, Vienna, and Leipzig, with plans to expand to additional European cities. The company has raised a $36 million Series A funding and maintains an engineering team of five engineers. Arbio’s platform uses AI to observe, decide, and act on real-world property operations with humans in the loop, enabling AI-assisted management of short-term rental properties across Europe.