Liquid AI’s d1-ultra takes the top spot on Artificial Analysis Decision Index

The new decision model scores 65 by refusing to make things up, even if it gets fewer answers right Liquid AI has a new leaderboard champion, and it won by knowing what it doesn’t know. The company’s d1-ultra model now sits first on the Artificial Analysis Decision Index with a score of 65. It pairs a high non-hallucination rate with lower accuracy, which is a trade-off some businesses will find very appealing. Liquid AI announced d1-ultra on October 15, 2026. It is a multimodal decision model, meaning it handles both text and images. Instead of generating free-form text, d1-ultra looks at a predefined set of answer options and assigns each one a calibrated probability.

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