I’ve been neck-deep in the world of Retrieval-Augmented Generation (RAG) lately, wrestling with brittle OCR chains and garbled tables, when along comes Morphik’s “Stop Parsing Docs” post to slap me straight: what if we treated PDFs like images instead of mangling them to death?
Here’s the gist—no more seven-stage pipelines that bleed errors at every handoff. Instead, Morphik leans on the ColPali Vision-LLM approach:
- Snap a high-res screenshot of each page
- Slice it into patches, feed through a Vision Transformer + PaliGemma LLM that “sees” charts, tables, and text in one go
- Late-interaction search across those patch embeddings to find exactly which cells, legend entries, or color bars answer your query
The magic shows up in the benchmarks: traditional OCR-first systems plateau around 67 nDCG@5, but ColPali rockets to 81—and Morphik’s end-to-end integration even nails 95.6% accuracy on tough financial Q&As. That means instead of hunting through mangled JSON or worrying about chunk boundaries, your query “show me Q3 revenue trends” pinpoints both the table figures and the matching uptick in the adjacent bar chart—no parsing required.
Why It Matters (and How They Made It Fast)
You might be thinking, “Cool, but Vision models are slow, right?” Morphik thought so too—and fixed it. By layering in MUVERA’s single-vector fingerprinting and a custom vector database tuned for multi-vector similarity, they shrank query times from 3–4 seconds to a blistering ~30 ms. Now you get visual-first retrieval that’s both precise and production-ready.
A Techie Takeaway
- Patch-level Embeddings: Preserve spatial relations by keeping each grid cell intact.
- Late Interaction: Match query tokens against each patch embedding, then aggregate—no early pooling means no lost context.
- Fingerprinting via MUVERA: Collapse multi-vector scores into a single vector for blazing fast lookups.
Where You Could Start
- Prototype a visual RAG flow on your docs—grab a handful of invoices or spec sheets and spin up a ColPali demo.
- Run nDCG benchmarks against your current pipeline. Measure those gains, because numbers don’t lie.
- Triage edge cases—test handwriting, non-English text, or wildly different layouts to see where parsing still has a leg up.
This shift isn’t just a neat trick; it’s a philosophical turn. Documents are inherently visual artifacts—charts and diagrams aren’t decorations, they’re the data. By preserving every pixel, you sidestep the endless game of parsing whack-a-mole.
If you’ve ever lost hours debugging a missing cell or crushed a pie chart into random percentages, give “Stop Parsing Docs” a read and rethink your RAG strategy. Your sanity (and your users) will thank you.