Launch HN: Rudus (YC P26) – AI for concrete contractors
Not a pilot. Concrete contractors are automating takeoffs in hours instead of weeks—and the AI stays out of the way.
Why it matters
Rudus demonstrates how vertical AI products succeed by embedding into existing workflows rather than replacing them. For founders building enterprise AI, the copilot-not-replacement thesis and niche-first strategy offer a playbook for adoption in risk-averse industries.
The key facts
16 to knowY Combinator P26 company
AI-powered takeoff and estimation for concrete subcontractors
Reduces estimation from weeks/months to hours via computer vision
Foundation packages expand from handful of assemblies to 80-120 priced line items
Copilot model: estimator maintains control via accept/override/edit, not autonomous black box
Proprietary CV models trained on customer takeoff data, improving per-client accuracy over time
Target market: concrete subs (niche, underserved by generic AI takeoff tools)
Problem: incumbent software hasn't updated since 2020; estimators distrust autonomous tools
Rudus (YC P26) launches AI takeoff and estimation platform for concrete subcontractors
Reduces manual estimation time from weeks/months to hours for foundation packages
Expands typical foundation package from handful of assemblies to 80-120 priced line items
Uses proprietary computer vision models trained on customer data, sharpening per-client accuracy over time
Product designed as copilot, not autonomous tool—estimator retains control over all accepts, overrides, edits
Existing software incumbent last updated in 2020
Founders conducted 100+ hours of customer research with structural concrete estimators before launch
Addresses concrete-specific estimation workflows ignored by generic GC-focused AI tools and VLMs
Go to the source
Hacker Newsnews.ycombinator.com
Publisher excerpt: Hi HN, we’re Rishi and Sahil. We’ve developed Rudus (https://www.rudus.ai/), an AI-powered takeoff and estimation platform built for concrete subcontractors. Takeoff is the process of measuring and quantifying materials from concrete plan sheets. Rudus identifies every concrete structure (footings,…