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Selecting one of five runs is claimed to lift Fable 5.1 from 58% to 70% on Terminal-Bench 4.0

A user says they hid an evaluation result and asked another agent whether the run worked.

2 Sources, 13h ago, first seen 13h ago

TLDR

A user says agent evaluations grade thousands of runs, then use each only once for a score. Their team hid a run’s result and asked another agent whether it worked. They say models are bad judges but good choosers: selecting one of five runs lifts Fable 5.1 from 58% to 70% on Terminal-Bench 4.0.

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2 Sources, first seen 13h ago

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Combined views

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2 Sources, first seen 13h ago

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Image: @TuXinming on X

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2 Sources

Xinming Tu@TuXinmingAgent evals grade thousands of runs, then use each once for a score. We gave them a second life: hide the result, ask another agent "did it work?" Models are bad judges but good choosers: picking 1 of 5 runs lifts Fable 5.1 from 58% → 70% on Terminal-Bench 4.0. 🧵14h
Bharath Ramsundar@rbhar90RT @TuXinming: Agent evals grade thousands of runs, then use each once for a score. We gave them a second life: hide the result, ask anothe…1h
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    2 Sources

    Xinming Tu@TuXinmingAgent evals grade thousands of runs, then use each once for a score. We gave them a second life: hide the result, ask another agent "did it work?" Models are bad judges but good choosers: picking 1 of 5 runs lifts Fable 5.1 from 58% → 70% on Terminal-Bench 4.0. 🧵14h
    Bharath Ramsundar@rbhar90RT @TuXinming: Agent evals grade thousands of runs, then use each once for a score. We gave them a second life: hide the result, ask anothe…1h
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