Overview | Extend

Extend is a platform for building, iterating on, evaluating, and deploying AI-powered document processing infrastructure. We provide parsing, extraction, classification, splitting, and editing so you can focus on building the features that matter for your business. Extend uses a mix of trained-in-house and frontier models to balance accuracy, latency, and cost for your use case.

What do you need to do?

You need to…	Start here
Turn documents into clean markdown or blocks for RAG and agents	Parsing
Pull specific fields into structured JSON (invoices, IDs, contracts)	Extraction
Route incoming documents to the right downstream process	Classification
Split a multi-document PDF into separate files by type	Splitting
Fill forms or generate completed PDFs programmatically	Editing
Build multi-step document pipelines with chained classification, splitting, and extraction	Workflows

Start building

We have quickstarts for a few different integration paths. Pick the on-ramp that fits how you work:

API & SDKs

Integrate directly into your app using our API. Call Extend from SDKS in Python, TypeScript, Java, and Go or REST.

Dashboard

Build, test, and iterate in the browser – then copy the API call straight into your code.

AI Agents

Point a coding agent at Extend with ready-made context files and a machine-readable docs index.