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The Harness Is the Product
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FIELD REPORT · APPLIED AI

The Harness Is the Product

What GPT-5.5 actually tells us about where AI value accrues

Isaiah Steinfeld
Listen to Signal
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1_The-Harness-Is-the-Product

2_The-Frontier-Is-No-Longer-a-Model-Race

3_What-Actually-Shipped

4_The-Benchmark-Story-Is-More-Interesting-Than-It-Looks

5_Persistence-Is-the-Actual-Breakthrough-and-Its-a-Harness-Level-Property

6_The-Cost-Metric-Is-Changing-and-That-Changes-Everything

7_The-Category-Is-Being-Contested-in-Real-Time

8_What-This-Means-for-Enterprise-Buyers

10_Pick-your-lane

11_About-Signal-Noise

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