Extend: Document Processing Infrastructure for AI Agents
Production-ready document processing
Parse, extract, and split your hardest documents with unmatched accuracy. Ship reliable document agents in minutes, not months.
Python Typescript CLI
$ pip install extend-ai
Trusted by leading AI teams
The highest performance document APIs for your agents and pipelines. Processing millions of pages every day.
/ parse
Convert unstructured documents into context for agents.
/ extract
Extract structured data from documents into any schema.
/ split
Segment multi-document files into individual subdocuments.
/ classify
Classify documents into pre-defined categories.
/ edit
Detect form fields and fill them programmatically.
Capabilities
Layout detection
- Advanced layout model detects tables, checkboxes, images, handwriting, and signatures on every page.
Specialized vision models
- A hybrid computer vision + vision-language model pipeline routes each element to purpose-built models.
Multiple performance modes
- Toggle between performance modes optimized for speed, cost, or accuracy.
Handle every file
- 25 file types, 100+ languages, and 4 chunking strategies — all through one API.
Benchmark
State of the art parsing on the hardest production documents.
RealDoc-Bench tests production documents where layout, reading order, and field relationships determine downstream answer quality.
95.7%
- Extend Performance Parse
- Extend Light Parse
- Gemini 3.5 Flash
- Azure DI
- AWS Textract
Document Q&A
Field-level answer accuracy from parsed markdown across 1,359 prompts and 581 documents.
Production-ready document processing takes more than models. A batteries-included toolkit to go from PDFs to production, fast.
Confidence scoring
- Flag uncertainty before production.
Fast mode
- Toggle between multiple processing modes.
Composer Agent
Skip manual prompt trial-and-error with an optimization agent. Upload examples and let Composer identify issues, automatically refine your schemas, and improve accuracy in the background.
Document workflows
End-to-end orchestration for complex pipelines. Build multi-step workflows that parse, split, extract, validate, and route with versioning and durability out of the box.
Enterprise-grade security for your data.
Self-hosted deployment
Run entirely on your infrastructure. Keep sensitive documents in-house with the same speed, accuracy, and features as our cloud.
SOC 2, HIPAA, & GDPR
Built for regulated industries. Certified with regular third-party penetration testing, and trusted by F500s in every industry.