Inscrição YC de Rex

Summer 2026Active

Rex passou pela Y Combinator no batch Summer 2026 como uma empresa B2B. Abaixo: o que a empresa faz, quem a fundou e sua inscrição para a YC, reconstruída pergunta por pergunta no formulário real da YC.

Batch YC: Summer 2026
Indústria: B2BFinance and Accounting
Tamanho da equipe: 2
Status: Active
Lançada: 2026

Fundadores

Lewis BlackwoodFounder
Merlin KafkaFounder

O que Rex faz

Rex is an AI-native service for order to cash. Rex replace manual operations with AI agents that continuously manage invoices, customers and exceptions. Order to cash is a $60B outsourced function because the work is too messy for traditional automation. Every customer has different context, exceptions do not follow clean rules, and the next step is often buried in emails, portals, handoffs, or someone’s memory. Rex agents run continuously in the background and resolve work to SLA standards so cash keeps moving. We're live with pre-IPO tech companies, managing >$500m in receivables from F100 companies, cutting manual follow-up cycles from weeks to hours. We founded Rex after spending four years building Sequence, an a16z-backed finance ops platform, from zero to Series A - where we saw firsthand that at-scale, O2C still runs on manual labour. Rex is the #1 winner of the Vercel AI Accelerator out of 2,500 teams, selected by Guillermo Rauch and leaders from OpenAI, Anthropic, Browserbase and more.

Inscrição YC de Rex, reconstruída

Inscrição Y Combinator

Rex, lote Summer 2026. As verdadeiras perguntas do formulário, respondidas com dados públicos.

Founders2
Company7
Progress7
Idea4
Equity3
Curious2
Batch Preference1

Company

Company name

Rex

Describe what your company does in 50 characters or less.

AI Operations Partner for Enterprise Order to Cash

What is your company going to make? Please describe your product and what it does or will do.

We built an AI-native service that continuously manages the order to cash process for enterprises. Rex agents handle invoices, customer communication, and exceptions in the background, reducing manual follow-up from weeks to hours. This replaces manual, people-heavy operations in a $60B market that traditional automation can't handle due to messy, exception-heavy workflows.

Where do you live now, and where would the company be based after YC?

We live in London, United Kingdom, and plan to keep the company based here after YC.

Explain your decision regarding location.

We're based in London because that's where we started building Rex and where our early users are. It makes sense to stay close to our customers and continue building here rather than relocate after YC.

21 respostas a mais na inscrição completa

Founders, Progress, Idea, Equity, Curious, Batch Preference estão na versão completa. Crie uma conta gratuita para abri-la no YC Insights, ao lado de todos os outros batches da YC.

Ver inscrição completa

Perguntas Frequentes

Esta é a inscrição real da YC de Rex?

Não. A Y Combinator mantém as inscrições submetidas em privado. Esta é uma reconstrução: as perguntas reais do formulário da YC, respondidas a partir dos dados públicos de Rex (notas de lançamento, históricos de fundadores, descrição do produto). Mostra como uma empresa como Rex se apresentaria à YC, não o texto que eles submeteram.

Em qual batch da YC Rex esteve?

Rex fez parte do batch Summer 2026 da Y Combinator.

Quem fundou o Rex?

O Rex foi fundado por Lewis Blackwood, Merlin Kafka.

O que o Rex faz?

AI-native BPO for enterprise order-to-cash

Como eu leio o application completo reconstruído?

Crie uma conta gratuita no Round Funded. A versão completa de 26 respostas do application do Rex, e de todos os outros lotes do YC, está no YC Insights.