How Molmo2Fish was trained: sonar fine-tuning plus error-correction examples

allen_ai · x · 2026-10-14

Ai2 shares training details: Kai Van Brunt fine-tuned Molmo 2 on sonar video, then trained it on examples of tracking errors, instructions, and corrections. In tests, Molmo2Fish fixed some mistakes after guidance — e.g., when two salmon had been assigned the same track. Content overlaps the main thread post; see its summary for full context.

Related event: MIT Researchers Build Molmo2Fish to Track Salmon in Sonar Video(4 posts)→

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