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There's a speed and focus tradeoff when building a core product and just using a frontier model/harness, but this is a pretty compelling arg…
Harrison Chase discusses the tradeoff between speed and focus when building a core product using a frontier model versus developing more customized solutions. Using a frontier model with a standard ha
Harrison Chase discusses the tradeoff between speed and focus when building a core product using a frontier model versus developing more customized solutions. Using a frontier model with a standard harness allows teams to move faster and stay focused on core product value, though potentially at the cost of differentiation or optimization. Chase appears to find the argument for this approach compelling, suggesting the productivity benefits often outweigh the drawbacks, particularly in early-stage development.
Related
- I think you should build your own harness too. Build on primitives. Models come and go.
- harness engineering > prompt engineering prompts get you 80% there the last 20% — tool routing, memory retrieval, retry logic, evals — thats…
- harness engineering > prompt engineering
- Open Harness, separated from model providers is a critical architectural pattern.
- That's actually exactly what I was saying. Value, it's in the harness.
Source: Harrison Chase (X) | 2026-04-13