YC W16 Batch — Companies and Outcomes

W16 also marked a pivotal moment in YC's evolution: it was the first batch where the company count crossed the 100+ threshold consistently, signaling YC's transition from a boutique accelerator to a scaled institution.

• Batch size: 125 companies
• Demo day: March 2016
• Defining theme: Diverse — consumer hardware, enterprise SaaS, fintech, aerospace, biotech
• Notable outcome density: Multiple companies exceeding $1B in value or significant acquisitions
• Indian companies: Kisan Network, GoLorry, others
• African companies: Paystack, WorldCover, Rappi (Latin America)

Other SaaS (W16)

Fintech (W16)

Developer Tools (W16)

Healthcare (W16)

Consumer (W16)

Aerospace (W16)

Agriculture (W16)

Transport (W16)

Industrial (W16)

Real Estate (W16)

Resources (W16)

Government (W16)

Education (W16)

Entertainment (W16)

Nonprofit (W16)

Lattice — HR Software Category Leader

Lattice, which built modern performance management software, became the category-defining product for HR and people management in the tech industry. The company reached a $3B valuation in 2021 and is used by thousands of companies for performance reviews, OKRs, and employee development. Lattice's success established that there was a large market for modern HR software purpose-built for the tech industry's performance management needs.

Paystack — Stripe Acquisition for ~$200M

Paystack, the Nigerian payments infrastructure company, was acquired by Stripe in October 2020 for approximately $200 million — one of the most significant acquisitions in African tech history. Founded by Shola Akinlade and Ezra Olubi, Paystack built payments APIs enabling Nigerian and African businesses to accept online payments. Stripe's acquisition validated the African fintech opportunity and Paystack's position as the leading payments layer for African digital commerce.

Rappi — Latin American Super-App

Rappi, which started as an on-demand delivery app in Colombia and Mexico, grew into one of Latin America's most prominent super-apps. The company raised over $2B in funding and operates across multiple Latin American countries, delivering groceries, cash, meals, and dozens of other categories. Rappi's growth is one of the clearest examples of a YC company building for a specific non-US market and achieving outcomes comparable to major US consumer companies.

Deepgram — Speech AI Infrastructure

Deepgram, which built a speech AI API for fast and accurate voice transcription, grew into a significant player in the speech-to-text market. As AI applications multiplied from 2022 onward, Deepgram's API became infrastructure for a growing ecosystem of voice-enabled AI products, raising over $85M and establishing itself as a key competitor to Google and Amazon in enterprise speech recognition.

Relativity Space — 3D Printed Rockets

Relativity Space, which aims to build rocket launch vehicles manufactured autonomously using large-scale 3D printing, has raised over $1.3B and conducted its first launch attempt in 2023. The company's vision — using AI and 3D printing to collapse the manufacturing complexity of rockets — represents one of the most ambitious deep tech bets from any YC batch.

Boom Supersonic — Commercial Supersonic Flight

Boom Supersonic, which is developing mainstream supersonic passenger aircraft to bring back commercial supersonic flight at accessible prices, has raised over $700M. The company has announced airline partnerships (United Airlines, American Airlines) and continues development of its Overture aircraft. Boom represents YC's willingness to back genuinely long-horizon deep tech hardware companies.

Mux — Video Infrastructure (Note: Mux is correctly attributed to W16 per YCDB data)

Mux, which builds API-based video infrastructure (described as "Stripe for Video"), grew into the leading video API platform for developers, raising over $190M and serving thousands of companies building video-based products.

W16 produced an unusually strong cluster of deep tech and hardware companies — Relativity Space, Boom, Gecko Robotics, Iron Ox, Opentrons, Deepgram, Astranis, Embark Trucks — alongside traditional software companies. This cluster signals a deliberate expansion of YC's scope beyond software into physical systems, aerospace, robotics, and synthetic biology.

The W16 deep tech pattern:

Each of these companies identified a physical-world process — rocket manufacturing, supersonic flight, industrial inspection, robotic farming, biological lab work, speech processing — and applied software and AI to make it radically more efficient or previously impossible. The common thread is not sector but approach: software-defined physical systems rather than purely digital products.

Why W16's outcomes matter for founders today:

The W16 outcome distribution — multiple $1B+ companies, a significant acquisition (Paystack), and several category-defining businesses — demonstrates that YC's model works across a wide range of startup types, stages, and markets. Founders building deep tech, hardware, or non-US market companies should note that W16's most remarkable outcomes came from exactly those categories.