---
title: Vehicle Routing vs PyVRP: a C++ Solver Wins 37/26/21 at Equal Budget | SpinForge
url: https://spin-forge.com/proof/s05
description: 37/26/21: vs PyVRP, 84 instance-runs, equal budget. CVRPLIB X, Solomon and Gehring–Homberger, One Thread Each, Every Route Set Re-Checked by an Independent…
---

GARMO SOLVERS · S05

# Vehicle Routing vs PyVRP: a C++ Solver Wins 37/26/21 at Equal Budget

CVRPLIB X, Solomon and Gehring–Homberger, One Thread Each, Every Route Set Re-Checked by an Independent Checker.

37/26/21 vs PyVRP, 84 instance-runs, equal budget

25/6/9 on CVRPLIB X

25/66/21 full Solomon set, paired

4.36  0.29 % X mean gap, first build  current

- Subsets: 37/26/21 (X 25/6/9, Homberger 12/3/5)
- Full Solomon 56, both at once: 25/66/21 narrow win
- The 12-instance Solomon subset alone remains a loss (1/16/7)
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- [UNISOLVE 0.16.1: One Solver Platform, 13 Problem Domains, Every Answer Checked](https://spin-forge.com/proof/s12)
- [Four Certified Builds: Toroidal Proofs, Unroutability Certificates, CertBQP and a 235× Batch Service](https://spin-forge.com/proof/s13)

[All results, charts and papers](https://spin-forge.com/proof)

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