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Technology & Computing / VIDEO

Harness² Explained: Self-Improving Agents Without Training

Prompt Engineering· 251K subscribers

2d ago · English audio

Harness² is a research framework from Google Cloud AI Research and Northwestern University that lets an AI agent rewrite its own harness (its prompts, skills, scripts, subagents and control-loop hooks) for every new task, without retraining the model. In this video I explain how it improves a harness with no answer key (Propose, Probe, Compose), why it has two levels of recursion with an experience library, what the…

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3.3×Score at discovery
81.6KViews
23.4KMedian · 50 videos

Outlier score

This score was measured on Mon, 26 Oct 2026 15:24:36 GMT. Current view counts may differ.

77.4K views ÷ a 23.4K baseline = 3.3×. Compared with 50 earlier videos from the same channel, matching the format recorded at scoring time. Older-upload baseline: reference videos had at least as long to gain views. This comparison is not age-matched.

YouTube snapshot: Mon, 26 Oct 2026 21:51:37 GMT. Counters may have changed.

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Generative AI & Agents

Channel-balanced percentile: 94

Comparison details

20 videos from 17 other channels, with each channel weighted equally. Same format and language, with 100,000–999,999 subscribers. Observed at 57 hours after publication, within ±11 hours.

This describes the collected sample, not all of YouTube. Updated Mon, 26 Oct 2026 22:59:55 GMT.

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Transcripts and detailed analytics are available for recent outlier Shorts up to three minutes. Research tools

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