Rex YCアプリケーション

Summer 2026Active

RexはSummer 2026バッチでB2B企業としてY Combinatorを卒業しました。以下：会社の事業内容、創業者、そして実際のYCフォームで質問ごとに再構築されたYCへの応募内容。

YCバッチ: Summer 2026
業界: B2BFinance and Accounting
チーム規模: 2
ステータス: Active
ローンチ済み: 2026

創業者

Lewis BlackwoodFounder
Merlin KafkaFounder

Rexの事業内容

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.

RexのYCアプリケーション、再構築済み

Y Combinator 申請

Rex 様、Summer 2026 バッチ。公開データから回答された、実際のフォームの質問。

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.

フルアプリケーションで21件の追加回答

はフルバージョンにあります。無料アカウントを作成して、他のすべてのYCバッチの横にあるYCインサイトで開いてください。

申請内容全体を見る

よくある質問

Rexの実際のYCアプリケーションですか？

いいえ。Y Combinatorは提出されたアプリケーションを非公開にしています。これは再構築されたものです。実際のYCフォームの質問に、Rexの公開データ（ローンチノート、創業者経歴、製品説明）から回答しています。Rexのような会社がYCにどのようにアピールするかを示しており、彼らが提出したテキストではありません。