JT-4.1 Flash
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China Mobile's Jiutian LLM line reaches frontier-adjacent territory: JT-4.1 Flash is a 236B-total / 21B-active MoE (non-reasoning) with a 256K-token context. AA Intelligence Index v4.1: 39, ranking near the top of its non-reasoning class — a notable result for a model from a state-owned telecom's in-house AI brand rather than a dedicated frontier lab. Released 9 July 2026.
Weights are not publicly available; the 21B active-parameter figure follows China Mobile's "236B A21B" model-naming convention.
Model Details
Architecture MOE
Parameters 236B
Active params 21B
Context window 256,000
AA Intelligence 39