LLM vs Agent vs Harness: X Debate Erupts Over Whether Scaffolding, Not Models, Drives Capability Gains
sean_a_mcclure · x · 2026-09-25
A technical argument between seanamcclure and ryunuck over whether Claude's agentic feats come from the model or the harness. ryunuck argues benchmarks are hugely harness-dependent and older models would score higher with new scaffolding. seanamcclure counters that calling LLMs pattern recognizers sets no upper bound, that different models in the same harness still differ, and that the two are conflating LLM, agent, and AI system.
Related event: Debate: does Claude's power come from model or harness?(3 posts)→
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