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Coinbase's 9B Fraud Model Beat Opus 4.5: Copy the Pattern With a Verifiable Reward, Tier-Only Output, and Block-Only Harness

Attributed compile + one small offline run on synthetic data Primary sources (Coinbase Engineering, "Owning Intelligence" series): Part 1/3 — Build by Yao Ma, Bo Lei, Xuwei Tan (2026-10-06), Part 2/3 — Evaluate by Yao Ma, Xuwei Tan (2026-10-07), and Part 3/3 — Own by Yao Ma, Xuwei Tan, Akshit Treha…

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  1. 2026-10-14 13:27 · DEV Community — Machine Learning
    Coinbase's 9B Fraud Model Beat Opus 4.5: Copy the Pattern With a Verifiable Reward, Tier-Only Output, and Block-Only Harness

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