API Startups

Deepgram builds foundational voice AI technology that enables speech-to-text, audio intelligence, text-to-speech, and voice agent APIs for businesses to create natural voice interactions. The company serves enterprises and developers across multiple industries seeking to integrate advanced voice capabilities into their applications and customer experiences.

24 investors

Alpaca provides an API-first brokerage infrastructure and licensed financial services that let developers and businesses embed stock and crypto investing into their own products for their end-customers. It operates with a globally distributed team and works with over 100 companies worldwide.

16 investors

Checkr provides background verification and fraud detection services for hiring, loan approvals, insurance, and tenant screening decisions. The platform uses AI to process and analyze fragmented data to deliver verification insights across multiple industries.

16 investors

Mux provides video infrastructure for developers, including tools to ingest, encode, and stream adaptive video and to measure viewer engagement and playback quality. Its offerings include a web-based video player built as a web component with features like adaptive streaming, preview thumbnails, and built-in analytics.

14 investors

Browser Use provides AI-powered browser automation infrastructure with anti-detection capabilities, CAPTCHA solving, and custom LLMs designed for web-based agent tasks at scale.

13 investors

Finch provides an API platform for applications to securely access employer and employee data with explicit consent, serving businesses that need workforce data integration. The company prioritizes enterprise-grade security, encryption, and compliance standards.

13 investors

Quicknode provides blockchain infrastructure services that enable developers and enterprises to build and deploy decentralized applications across multiple blockchains. The platform offers fast, reliable node access and developer tools for Web3 projects ranging from wallets and Layer 1 protocols to gaming and fintech applications.

13 investors

Recall.ai provides meeting recording and transcription APIs and SDKs that capture individual speaker audio for accurate, multi-speaker transcripts. The platform serves developers and enterprises building meeting intelligence, legal tech, and AI assistant features into their products.

13 investors

Modern Treasury builds payment operations tools that automate the full money movement cycle—from payment initiation and approvals through reconciliation—available via web application or API. It serves businesses handling financial transactions in the fintech sector.

12 investors

VideoGen builds an AI-powered video creation platform that applies industrial automation to video production, making video creation accessible to a broader audience.

12 investors

Decentro provides APIs and SDKs that enable companies to connect with legacy financial institutions across India and APAC, replacing the fragmented integration process with a unified platform and sandbox environment. The service handles ongoing maintenance and updates to prevent disruption, reducing typical integration timelines from months to weeks.

11 investors

Ribbon Health runs a health care data platform and API that supplies data on doctors, insurance plans, and the cost and quality of care, used by health insurers, medical providers, and digital health companies. Its infrastructure supports provider directories, referral management, and care navigation across the health care industry.

11 investors

Bird is an omnichannel communications CRM platform that connects businesses with their customers across channels including SMS, voice, WhatsApp, WeChat, Messenger, and email. Founded in 2011, it serves nearly 20,000 business customers worldwide.

10 investors

Gigs provides a platform (Gigs OS) that enables tech brands and other companies to launch and operate their own mobile services without managing telecom infrastructure directly. The platform handles connectivity, compliance, billing, and customer support automation, allowing non-telecom brands like Revolut, Cash App, and Klarna to offer phone plans to their users.

10 investors

S2.dev builds infrastructure services and tools for developers. The company focuses on providing a platform for application development and deployment.

10 investors

Treasury Prime provides an embedded banking software platform and marketplace that connects enterprise companies and fintechs with banks and product partners through a banking API to build payment and financial products. Its services cover money transfer, risk mitigation, and integration with bank infrastructure.

10 investors

Typewise develops generative AI agents that automate customer service workflows, including data retrieval from legacy systems and ticket resolution. The platform is designed for support teams to handle customer inquiries more efficiently while freeing up human agents for complex interactions.

10 investors

Handoff is an AI-native construction management and estimating platform for residential contractors including remodelers, home builders, and trade contractors. It automates estimating, project management, takeoffs, scheduling, CRM, and financial management across the full job lifecycle.

9 investors

Junction provides a unified API platform that connects healthcare providers, wellness companies, and EHR systems to a nationwide network of labs and 300+ medical devices. The platform enables remote patient monitoring, at-home lab testing, and automates workflows for diagnostic operations and care delivery.

9 investors

Oway uses AI to automatically price, match, and sell unused truck capacity in real time, providing freight shipping to businesses at lower cost and faster speeds than traditional logistics. The company addresses the inefficiency of underutilized truck space in the U.S. trucking and logistics industry.

9 investors

Seam provides an API platform that enables developers and businesses to connect applications with IoT devices and orchestrate their use. The platform abstracts device protocols and integrations to simplify physical device connectivity.

9 investors

Verto operates a cross-border payment and foreign exchange platform for businesses, letting them convert, hold, receive, and make payments across 49 currencies. It connects businesses with liquidity providers, FX brokers, payment institutions, and banks through a marketplace, with a focus on emerging markets, particularly Africa.

9 investors

Photoroom provides visual creation tools for e-commerce businesses to generate product images and marketing content. The platform serves over 1 million brands globally and processes billions of images annually.

8 investors

SlidePay, formerly Cube, offers an API that lets any app accept in-person credit card payments across platforms and devices. It targets app developers needing fast payment integration and was acquired in October 2014.

8 investors