Startups Directory

Nexthop AI builds custom networking infrastructure purpose-built for AI workloads in hyperscale cloud data centers. The company combines custom hardware, software, and optical integration using a JDM (Joint Development Manufacturer) model to deliver tightly integrated solutions for GPU clusters. Nexthop's Disaggregated Spine architecture achieves up to 30% reductions in energy consumption and infrastructure costs while supporting extreme throughput (50-100+ terabits) compared to traditional networking vendors like Cisco and Juniper.

Poolside is an enterprise-grade AI coding assistant that generates, tests, and refactors code using natural language prompts. The platform includes Malibu (a high-capacity model for complex tasks) and Point (a lightweight model for sub-200ms code completion), accessible via IDE plugins and CLI. Built by former GitHub leadership, Poolside differentiates through proprietary RLCEF technology that generates synthetic training data, enabling continuous model improvement without relying on customer data, which remains on-premise.

Together AI is an AI Acceleration Cloud platform enabling developers and researchers to train, fine-tune, and deploy generative AI models at scale. The platform supports over 200 open-source models across all modalities (chat, image, audio, vision, code, embeddings) with 2-3x faster inference than hyperscalers, OpenAI-compatible endpoints, and infrastructure scaling from 16 to 100,000+ GPUs. Founded by Stanford professors and serial entrepreneurs, Together AI is positioned as the cloud infrastructure layer for the open-source AI ecosystem, with recent expansion into data transformation through the Refuel.ai acquisition.

Clear Street is a cloud-native capital markets platform that replaces legacy 1970s-80s mainframe infrastructure with modern real-time ledger technology. It unifies trading, risk management, financing, clearing, and custody for institutional clients on a single platform. The company serves sophisticated institutional investors—hedge funds, market makers, and ETF issuers—who are too complex for retail platforms but underserved by major bulge-bracket prime brokers. Clear Street generates revenue primarily through net financing (margin, securities lending, and collateralized financing) rather than commissions.

Upwind Security is a cloud security platform that consolidates CSPM, CWPP, CDR, vulnerability management, identity security, and container security into a single offering. It uses eBPF kernel-level monitoring paired with cloud telemetry to detect malicious activity and correlate runtime context with build-time data, reducing alert noise by ~95%. The platform serves enterprise security teams protecting cloud infrastructure across AWS, Azure, and other environments.

Positron AI designs purpose-built FPGA-based hardware (Atlas) optimized for generative AI inference workloads, achieving 93% memory bandwidth utilization versus 10-30% in GPU systems while consuming less than a third of the power of Nvidia H100s. The company serves enterprises and cloud providers running transformer-based models at scale, from content moderation to token-as-a-service platforms. Their next-generation chip (Asimov/Titan) targets memory-intensive applications like video, trading, and multi-trillion parameter models with 6x more RAM than competing solutions.

PaleBlueDot AI operates a dual-model platform connecting AI startups and enterprises with GPU compute capacity through a real-time marketplace and custom cluster design services. The company aggregates spare GPU capacity from third-party providers and designs large-scale clusters deployed in data centers like Digital Reality Trust and Equinix. With over 80 global clusters, it serves customers across Japan, South Korea, Singapore, and Southeast Asia—including RedNote (Xiaohongshu)—positioning itself as a cost-efficient alternative to hyperscalers for AI workloads.

Dash0 is an OpenTelemetry-native observability platform that helps engineering teams monitor metrics, logs, traces, and resources with built-in alerting, dashboards, and AI-powered troubleshooting. Unlike legacy observability tools, Dash0 generates vendor-agnostic, standardized data that isn't locked into proprietary formats. The platform solves the observability crisis—too noisy, too expensive, and too complex—with transparent consumption-based pricing and an AI copilot called Agent0 for intelligent incident investigation.

Decart is an AI research lab building the fastest and most efficient generative AI models for real-time video generation and manipulation. Their flagship products—Oasis (real-time AI game world) and Mirage (live video editing via text prompts)—achieve 10x better efficiency than competitors like OpenAI's Sora, reducing inference costs from $100/hour to $0.25/hour. The company combines a proprietary LLM inference engine (built from scratch in C++ and CUDA) with advanced video generation capabilities, serving developers, enterprises, and streaming/gaming platforms.