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.

17 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.

13 investors

Alpaca provides brokerage infrastructure APIs that enable fintechs and financial institutions to build investing applications and platforms with access to stocks, options, crypto, and other asset types. The company serves global financial institutions and retail developers across 40+ countries through developer-friendly APIs.

12 investors

Mux provides video infrastructure and API services for developers building video applications. The company offers APIs and tools for video encoding, playback, and performance monitoring.

11 investors

Modern Treasury provides a payments infrastructure platform that enables businesses to move and track money across fiat and stablecoin rails through a single API. The company serves enterprises and financial service providers looking to streamline payment operations across multiple currencies, regions, and payment systems.

10 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.

9 investors

Treasury Prime provides embedded banking technology through APIs that enable fintechs to embed banking services in their applications. The platform allows banks to expand into new markets while helping fintechs manage money transfers and regulatory risk.

8 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.

7 investors

DrChrono is a mobile-first, AI-powered healthcare platform for independent medical practices that manages scheduling, charting, billing, and patient communication in a single system. The company serves solo practitioners and multi-location clinics with features designed to reduce administrative burden and improve revenue.

7 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.

7 investors

Ribbon Health was a healthcare data platform providing APIs with accurate information on providers, insurance plans, costs, and quality of care to power care navigation and provider directories. Acquired by H1.

7 investors

Verto provides borderless payment and financial management services for startups and enterprises, enabling multi-currency transactions, local account setup, and embedded finance across global markets. The platform centralizes currency management, international payouts, expense automation, and cross-border payments with compliance oversight.

7 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.

6 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.

6 investors

Sunlight provides AI agents that process B2B payments by card through suppliers' existing billing portals, enabling AP platforms and card issuers to capture card-based payments without requiring supplier enrollment or integration.

6 investors

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

6 investors

AssemblyAI builds Voice AI technology for speech recognition and processing applications. The company develops accurate, capable, and safe AI models used across various industries for voice-based applications.

5 investors

Bird provides messaging infrastructure for developers, offering SMS, email, voice, and real-time messaging APIs built and operated end-to-end. The platform serves developers and applications requiring reliable message delivery across multiple channels globally.

5 investors

Enode provides APIs that enable energy companies and climate tech startups to coordinate electricity demand and supply by automatically optimizing consumer energy usage based on renewable availability and pricing. The platform manages consumption across over 250 million energy customers globally and supports 1000+ energy devices spanning 80+ brands.

5 investors

Escape provides an offensive security platform that continuously maps an organization's attack surface and identifies vulnerabilities the way attackers would, integrating directly into engineering workflows. The platform is designed for security teams managing large numbers of developers.

5 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.

5 investors

Svix provides a webhooks-as-a-service platform that enables companies to send webhooks reliably and at scale. It serves developers and API teams across all company sizes looking to integrate real-time data infrastructure into their applications.

5 investors

Tailor provides a headless ERP system designed as a flexible alternative to legacy platforms, enabling businesses to integrate backend operations with tools like Shopify, QuickBooks, and Netsuite. The platform allows modular configuration without disrupting operations and offers customizable interfaces for teams managing complex business processes.

5 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.

5 investors