Intern-Decision: 0.8B-4B multimodal decision models output structured choices in one forward pass

internlm · hf · 2026-10-16

Shanghai AI Lab with SJTU, Fudan and NTU present Intern-Decision, a family of 0.8B/2B/4B multimodal decision models that return structured choices with candidate probabilities from text and optional images. Its autoregressive masked language modeling objective places one decision placeholder per field in a JSON skeleton, evaluating all fields in a single causal forward pass with the backbone's native LM head. The 4B model reaches 90.02% unweighted average accuracy across seven suites vs 88.74% for Jev v1.13.0, at much lower latency for a fixed 289-token request.

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