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Ultramarine 1 Flash reports leading scores on several knowledge-work benchmarks

paperinstruments.com Editor score 7/10

The model reports scores above listed competitors on JobBench, internal knowledge-work tests and FrontierFinance, while trailing on some other benchmarks; weights are still forthcoming. Engineers evaluating model options should note both the benchmark spread and the gap between an API and released weights.

What

Ultramarine 1 Flash is an open model for professional work in finance, law, consulting, and operations.

How

It scores 62.9 on JobBench and generates 6.5% fewer tokens than GLM-5.3 Flash across six benchmarks.

Why it matters

At a reported $0.13 per task, it outscored Claude Fable 5 and GPT-5.6 Sol on PI Knowledge Work, making cost-quality comparisons relevant to model selection.

Read on paperinstruments.com → Hacker News · 38 comments

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