Zachary Proser
zackproser.com
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Overview
Zachary Proser helps teams ship production AI: RAG pipelines, developer tools, and applied AI engineering with 13+ years of experience.
News
The Eval Harness: 60 Local and Cloud Coding Runs
A complete record of 60 coding-agent runs across an 80.76 GiB local DeepSeek quant, hosted DeepSeek, and hosted Claude: task design, hidden scorers, repair passes, provider recovery, exact cost, uncertainty, and workload fit.
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Patch footprint beat model price: the clearest signal in 60 coding-agent runs
The strongest predictor in a 60-run local-vs-cloud coding-agent benchmark wasn't model quality or price - it was patch footprint. Four-plus-file changes fell to 3/7 held-out checks on every route, including the lane that cost 25x more per run. Decompositi
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Bring Your Own Key (BYOK)
Learn how to configure your own provider keys with the AI Gateway.
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OpenRouter vs Vercel AI Gateway: Cost, Routing, and Model Coverage
A measured comparison of OpenRouter and Vercel AI Gateway across fees, provider redundancy, model catalogs, prompt caching, routing controls, privacy, and developer experience.
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