My Splink benchmark was wrong four times, every time in my favor
I ran the GoldenMatch vs Splink scale benchmark five times. Four runs were invalid, and every one failed in the direction that flattered my own tool.
About
Ben Severn
Software engineer building open-source matching tools — and the SaaS funnel that wraps them.
I created the Golden Suite — five Python libraries for checking, transforming, matching, and orchestrating data. Each works standalone, or together as the engine inside bensevern.dev: the matching funnel between your SaaS sources and your warehouse. We collect, match, surface ambiguous clusters for review, and push the resulting golden records out. The customer keeps their data; we're the filter, never the source of truth.
Open-source Suite
GoldenMatchEntity resolution & deduplication
GoldenCheckData-quality scanning
GoldenFlowData transformation & standardization
GoldenPipePipeline orchestration
infermapSchema mapping engine
goldensuite-mcpMCP server exposing all five tools
GoldenMatch also ships native Rust kernels (goldenmatch-native), a TypeScript build (goldenmatch-js), and a Postgres extension (goldenmatch-pg).
Product — bensevern.dev
WorkbenchMDM workbench — match, review, push golden records
DedupeFree engine demo — clean a CSV on the real matcher
Clean roomTwo-party private set overlap (PPRL)
PPRLEnterprise privacy-preserving linkage
Open Source Data Tools
Open-source Golden Suite
Building tools that check, transform, match, and map data. All open source. All production-grade.
Projects
5 packages on PyPIRecent writing
All posts →How to match two lists without either side seeing the other (privacy-preserving record linkage)
A technical look at how the /cleanroom tool finds the overlap between two lists using Bloom-filter fingerprints (CLKs), why the server can't reverse them, and how the browser tier keeps raw data on your device.
Why Knowledge Graphs Live or Die on Entity Resolution
A knowledge graph is only as good as its entities. Why bad entity resolution wrecks KG quality and cost, and how GoldenMatch solves the node layer.