GitNexus sells a deterministic code knowledge graph and claims 51% lower coding-agent cost than embedding search.

The YC-backed open-source "kernel for coding agents" resolves an organization's codebases into a deterministic graph of callers, imports and dependencies rather than embedding-based retrieval, claiming 51% cost reduction on its own benchmarks, with 45,000+ GitHub stars and 1M+ npm downloads reported in the listing (Product Hunt). The claim to test is the cost one. If deterministic graph lookup really halves agent spend against vector search, retrieval becomes a pricing lever rather than an accuracy one. I run an AST-derived graph over my own repo for exactly this reason and the token savings are real; whether they're 51% I have no idea.