Enhance AI Pipelines with a Robust 4-Layer Architecture SolutionEnhance AI Pipelines with a Robust 4-Layer Architecture Solution
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Most AI pipelines fail before the model sees a single token.
We built a design file extraction pipeline parsing complex CAD exports into accurate BOMs and wall-by-wall interpretations. First pass: send the JSON to the model, ask it to figure it out. Confident, wrong, not debuggable.
The problem wasn't the model. It was the architecture. Extraction, interpretation, and validation were collapsed into one step with no separation of concerns.
The fix: three layers of deterministic work before the model touches anything.
Layer 1 extracts every field in the design file via pure Python. No inference, no skipping. Layer 2 converts raw data into typed signals. A single boolean classifies an entire component system. Only at Layer 3 does the model enter, receiving clean wall-level chunks: dimensions, sections, hardware signals, designer notes. Layer 4 splits validation between Python for math and consistency checks, and the model for judgment calls.
When output is wrong, you know exactly which layer failed.
Separation of concerns is the foundational principle of AI systems that work in production.
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Creatives on Contra have earned over $150M and we are just getting started