# Extend

**Source:** https://geo.sig.ai/brands/extend  
**Vertical:** Infrastructure  
**Subcategory:** Cloud Services  
**Tier:** Leader  
**Website:** extend.ai  
**Last Updated:** 2026-04-14

## Summary

San Francisco AI document processing using LLMs for enterprise data extraction from invoices, contracts, and forms; $17M Innovation Endeavors and YC-backed at multi-million ARR serving Brex and Square cash-flow positive.

## Company Overview

Extend is a San Francisco-based AI document processing platform using large language models to provide accurate data extraction and document understanding for enterprise workflows — turning unstructured documents (invoices, contracts, medical records, financial statements, onboarding forms) into structured data at the accuracy and cost level that manual processing and traditional OCR cannot match at scale. Backed with $17 million raised in combined seed and Series A funding led by Innovation Endeavors with Y Combinator, Homebrew, and angel investors including Adobe's CSO and Vercel's CEO, Extend reached multi-million dollar ARR and cash-flow positive status serving customers including Brex, Square, Checkr, and multiple Fortune 500 companies.

Extend's LLM-powered extraction differs from traditional OCR and rule-based processing: while OCR extracts raw text and rule-based systems match specific field patterns, Extend's LLM engine understands document context, handles varied formats without template configuration, and extracts structured data from complex layouts (tables, multi-page contracts, handwritten annotations) where rule-based systems fail. The human-in-the-loop quality control layer uses reviewer feedback to continuously improve extraction accuracy for each customer's specific document types and vocabulary — reducing ongoing manual review burden as the model learns document patterns.

In 2025, Extend competes in the intelligent document processing (IDP) market with Hyperscience ($190M raised), Instabase, and cloud platform document AI (AWS Textract, Google Document AI, Azure Form Recognizer) for enterprise document processing. General-purpose AI APIs have democratized IDP capabilities, but Extend's differentiation is production-ready accuracy, human-in-the-loop quality control, and domain-specific fine-tuning that raw LLM APIs don't provide. The 2025 strategy focuses on fintech and healthcare document verticals (high document volume, strict accuracy requirements), expanding the pre-built document type extractor library, and building the API suite for enterprise-scale document processing deployments.

## Frequently Asked Questions

### What is Extend?
Extend is a San Francisco-based infrastructure company that provides a modern document processing cloud platform for enterprises. Founded in 2023 and part of Y Combinator's Winter 2023 batch, Extend uses large language models to deliver fast and accurate data extraction from documents.

### What products and services does Extend offer?
Extend offers a document processing cloud platform built on a full-stack LLM solution that provides fast and accurate data extraction. The company recently launched a self-serve version of its platform to make the technology more accessible to customers.

### Who are Extend's customers?
Extend serves enterprise customers including Brex, Square, Checkr, Flatiron Health, and multiple Fortune 500 companies. The platform is designed for organizations that need modern, efficient document processing solutions.

### When was Extend founded?
Extend was founded in 2023 and participated in Y Combinator's Winter 2023 batch.

### Where is Extend located?
Extend is based in San Francisco, California.

### How much funding has Extend raised?
Extend raised $17M in combined seed and Series A funding in June 2025, led by Innovation Endeavors with participation from Y Combinator, Homebrew, and Character. Notable angel investors include Scott Belsky (Adobe CSO) and Guillermo Rauch (Vercel CEO).

### What are Extend's key achievements?
Extend has achieved multi-millions in annual recurring revenue (ARR) and has reached cash-flow positive status. The company has attracted notable enterprise customers including multiple Fortune 500 companies.

### What technology does Extend use?
Extend's platform is built on large language models (LLMs) as a full-stack solution for document processing. This technology enables fast and accurate data extraction from documents.

### How can I get started with Extend?
Extend recently launched a self-serve version of its platform. The company is currently focused on scaling its engineering and go-to-market teams to better serve customers.

### What are Extend's recent developments?
In June 2025, Extend raised $17M in combined seed and Series A funding and launched a self-serve platform version. The company is now focused on engineering and go-to-market scaling, along with R&D acceleration and product development.

## Tags

ai-powered, b2b, developer-tools, infrastructure, platform, cloud-native, saas

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*Data from geo.sig.ai Brand Intelligence Database. Updated 2026-04-14.*