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Split divides a document into named sections based on descriptions you provide. It runs Parse under the hood first, then uses the parsed content to identify which pages belong to each section based on your definitions. Studio then lets you chain Extract steps that target specific sections—so you can apply different schemas to different parts of the same document.

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How Split works in Studio

When you add a Split step to a pipeline, Studio shows two configuration areas:
  1. Instructions — Rules for how pages should be classified (the default allows overlap only at section boundaries)
  2. Sections & Partitions — The sections you want to identify, each with a Title and Description
Split configuration panel

Split pipeline configuration

After running Split, Studio automatically enables an Extract step with a section dropdown. This dropdown shows all the sections you defined, letting you choose which section to extract from. You can add multiple Extract steps, each targeting a different section with its own schema.
Extract dropdown showing sections

Extract step with section selector

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Example: Financial statement

Let’s use Split on the Fidelity Investment report:
Fidelity statement document

Fidelity investment statement

For this example, we’ll define simple sections for page 1, page 2, and page 3.
1

Define sections

In the Sections & Partitions panel, add a section for each part you want to target:
TitleDescription
page 1page 1 of the report
page 2page 2 of the report
page 3page 3 of the report
Multiple sections defined

Defining sections with titles and descriptions

Each section has a Title (the name in results and the Extract dropdown) and a Description (natural language explanation of what pages belong to this section).
In practice, you’d use more descriptive sections like “Portfolio Summary” or “Account Holdings”. This simple page-based example demonstrates the mechanics.
2

Run Split

Click Run. Split parses the document, then classifies each page against your section descriptions.
3

View results

The Results tab shows which pages were assigned to each section:
Results with page thumbnails per section

Split results showing pages grouped by section

Each section displays thumbnails of its matched pages. Pages not matched to any section won’t appear.
4

Extract from specific sections

Studio automatically adds an Extract step after Split. Select a section from the dropdown (page 1, page 2, or page 3), then define your extraction schema.You can add multiple Extract steps to process different sections with different schemas—use the Add button in the pipeline header.

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Partitions

For sections that repeat with different identifiers (like multiple accounts in one statement), use partitions. Click ADD PARTITION under any section to specify a partition key. For example, if a statement contains holdings for accounts A, B, and C:
  • Section: “Account Holdings”
  • Partition key: “account number”
Split returns separate results for each account, and the Extract dropdown shows each partition as a separate option.

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Instructions

The Instructions text area controls how Split handles page classification: 
Split the document into the applicable sections. Sections may only 
overlap at their first and last page if at all.
This default means a page can belong to multiple sections only at boundaries. Customize for your use case:
GoalInstructions
Allow full overlap”Pages can belong to multiple sections if they contain content matching multiple descriptions.”
Force exclusive assignment”Each page must belong to exactly one section. Assign to the most specific matching section.”

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Troubleshooting

Check your description. If you said “Account Summary” but the document header says “Portfolio Overview”, Split won’t match. Use terms that appear in the actual document.Try broadening the description first, then narrow down once you confirm Split can find the section.
Add more distinguishing details to your descriptions. If pages look similar, mention specific text, headers, or visual elements: “The page with the pie chart showing asset allocation” is more specific than “holdings breakdown”.
The partition key must appear as identifiable text in the document. If you’re partitioning by “account number” but the document doesn’t have visible account numbers (only account names), use “account name” as the partition key instead.
Yes. After Split, you can add multiple Extract steps. Each Extract step has its own section dropdown, schema, and settings. Use the Add button in the pipeline header to add additional steps.

Split API Reference

Complete API documentation for programmatic Split calls.

Extract Pipeline

Define extraction schemas for your Split sections.

Parse Pipeline

Split runs Parse internally—understand what it sees.

Deploy Pipelines

Deploy your Split + Extract pipeline for API access.