Skip to content
YC Root AccessYC Root Access

Reducto: Making Human Data LLM-Ready With State-of-the-Art Accuracy

Reducto just raised $24.5M in Series A funding to help enterprises unlock unstructured data with near-perfect accuracy. AI teams today are bottlenecked by messy, real-world documents—so Reducto built the most accurate parsing pipeline in the industry. By combining vision-language models with agentic workflows, Reducto turns complex PDFs and scanned documents into structured, LLM-ready data. Now trusted by companies like Scale AI, Vanta, and top AI teams, Reducto has parsed over 250 million pages and is expanding into full end-to-end pipelines: document splitting, classification, structured extraction, and more. With their new Agentic OCR framework, they’re pushing toward human-level accuracy—automating what used to take teams days, in seconds. YC Partner Diana Hu recently sat down with the Reducto founders to talk about how they got here, their founding story, and the kind of company they are building. Learn more about Reducto at https://reducto.ai. Apply to Y Combinator: https://ycombinator.com/apply Chapters (Powered by ChapterMe) - 00:00 - Data-driven AI for large enterprises 01:17 - Document management 03:04 - Simplify PDF processing for companies 03:59 - Aha moment for PDF extraction, interesting approach 05:02 - NLP-based PDF extraction for enterprise apps 06:56 - Great data, exciting use cases 08:10 - Best places for customer approaches 08:48 - Closing a Fortune 25 deal in just two months 11:21 - Data-driven AI for high-quality documents 13:19 - Reductos AI-focused infrastructure attracts top companies 15:18 - Quality of data, results, support

Diana Huhost
May 1, 202515mWatch on YouTube ↗

CHAPTERS

  1. 0:00 – 0:42

    Reducto’s mission: turning messy enterprise documents into LLM-ready structured data

    The founders explain that Reducto converts complex documents—like insurance claims, health records, and financial statements—into clean structured data. The primary goal is to make downstream LLM workflows (RAG, summarization, reasoning) more reliable by fixing ingestion quality at the source.

    • Transforms complicated documents into structured outputs
    • Optimized for LLM use cases like RAG and summarization
    • Targets high-stakes enterprise document types (claims, records, statements)
  2. 0:42 – 1:30

    Early traction with major customers and why ingestion is a core AI bottleneck

    Reducto quickly gained adoption among notable companies (e.g., Vanta) and large, often unnamed enterprises. The founders frame document ingestion as a fundamental bottleneck for building effective AI applications, even for teams with strong engineering capabilities.

    • Rapid enterprise adoption within ~1 year of founding
    • Works with both startups and very large enterprises
    • Ingestion quality is a foundational constraint for AI apps
    • Many teams underestimate the time and complexity involved
  3. 1:30 – 2:57

    From LLM memory tooling to document ingestion: the pivot that wasn’t planned

    They started with a different YC application idea—long-term memory for LLMs—then discovered customers also needed uploaded files managed. A quick, rough segmentation demo unexpectedly drew strong demand, pulling them into document processing as a product.

    • Original product: long-term memory for LLMs
    • User requests expanded to file/document handling
    • A weekend segmentation prototype triggered strong inbound interest
    • Customer pull revealed how widespread the ingestion pain was
  4. 2:57 – 4:43

    Why PDF processing stays unsolved: “schlep blindness” and the ‘ingestion team’ framing

    They discuss how PDF extraction is widely known to be painful, yet few teams want to tackle it—making it an unglamorous but valuable wedge. Reducto positions itself as the dedicated ingestion team so application builders can focus on their core product.

    • Teams don’t want to become “PDF processing companies”
    • Schlep blindness: everyone knows it’s painful, nobody wants to fix it
    • Reducto abstracts ingestion as a service/API for product teams
    • Customer value: fewer internal resources wasted on parsing and cleanup
  5. 4:43 – 6:22

    A vision-first approach: treating document parsing as a computer vision problem

    Instead of relying on brittle rules and PDF standards, Reducto focuses on understanding documents the way humans do. The founders explain how layout cues (spacing, indentation, hierarchy) carry meaning and require robust modeling across a long tail of formats.

    • Replaces rule-based parsing with computer-vision-driven understanding
    • Uses visual cues like gaps, tabs, and hierarchy to infer semantics
    • Designed to work across many document types, not just invoices
    • Long-tail generalization is difficult but central to the product
  6. 6:22 – 7:49

    Why better ingestion boosts LLM outcomes: accuracy gains and newly possible features

    Customers often see substantial improvements in end-to-end LLM accuracy simply by switching ingestion providers. Reducto also reduces the need for heavy post-processing and enables use cases that previously failed due to scanned docs, missing metadata, or performance constraints.

    • Swapping ingestion can yield large LLM accuracy gains (reported up to ~30%+)
    • Improved outputs reduce downstream cleanup and chunking work
    • Enables processing of scanned documents and other hard inputs
    • Unlocks features that were previously impossible due to poor extraction
  7. 7:49 – 9:17

    Handling the hardest real-world documents: handwriting, checkboxes, and visual annotations

    They describe examples like extracting handwritten, messy real-estate questionnaires with very high accuracy. Reducto combines deterministic layout methods with modern VLM capabilities for the long tail, including cases like highlighted/circled table values and instruction-guided tweaks.

    • Handwriting extraction improved by modern VLMs vs traditional OCR
    • Supports heterogeneous inputs: checkboxes, handwriting, scans
    • Can handle visual edge cases (e.g., highlighted/circled numbers)
    • Customers can guide behavior with plain-text instructions
  8. 9:17 – 11:24

    Closing a Fortune 25 customer fast: from Launch YC demo to enterprise gauntlet

    The founders recount an intense sales cycle that began during the YC batch after a successful Launch YC demo. Despite not being salespeople, they navigated a months-long evaluation involving many stakeholders and direct comparison against the customer’s internal doc-processing team.

    • Deal originated from Launch YC and a failing document in the customer pipeline
    • Focused on being “substantially better” via a strong layout model
    • Competed primarily against an internal document processing team
    • Enterprise evaluation included extensive in-person grilling and multiple stakeholders
  9. 11:24 – 12:45

    Reaching SOTA: building high-quality datasets and an internal data engine

    They explain that progress required better benchmarks than what existed publicly, because high-quality document datasets are scarce. Reducto invested in rigorous data pipelines, expert input, and diversified sampling to iterate quickly and evaluate against alternatives.

    • Lack of high-quality public document datasets slowed the field
    • Built an internal “data engine” and extensive pipelines
    • Sourced diverse document data to test long-tail performance
    • Fresh perspective (vision-first) avoided legacy heuristic approaches
  10. 12:45 – 13:42

    Beyond PDFs: expanding to spreadsheets, images, and slides without forking pipelines

    Reducto broadened format support as customers repeatedly asked for more endpoints to avoid maintaining parallel ingestion systems. They balanced expansion with maintaining a high accuracy bar, aiming to be a single ingestion layer across document modalities.

    • Now supports spreadsheets, images, documents, and slides
    • Customer pain: having to fork ingestion pipelines per format
    • Expansion driven by repeated requests (e.g., spreadsheet endpoint)
    • Accuracy bar remained a constraint while broadening scope
  11. 13:42 – 14:31

    Why Reducto becomes core AI infrastructure: moving faster with new models and better reasoning

    They position Reducto as foundational infrastructure for AI apps and agents, especially when teams previously built ingestion in-house to hit quality targets. Offloading ingestion helps teams adopt new models faster and spend effort on reasoning and product features instead.

    • Core value: eliminate ingestion as the blocker to quality
    • Helps teams keep up with new models and evolving best practices
    • Lets builders focus on post-processing, reasoning, and product UX
    • Applies to startups through large enterprises
  12. 14:31 – 15:34

    Hiring for craftsmanship: detail-oriented engineers who obsess over data quality

    Following their Series A announcement, they describe hiring across engineering roles, including ML and product engineering. They emphasize scrappiness and deep attention to detail—highlighting that data quality directly determines customer results.

    • Hiring across engineering roles (ML, product, general engineering)
    • Prefers scrappy builders with startup/founder-like mindset
    • Quality comes from meticulous inspection and iteration
    • Principle: output quality is constrained by input data quality

Get more out of YouTube videos.

High quality summaries for YouTube videos. Accurate transcripts to search & find moments. Powered by ChatGPT & Claude AI.