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A.X-K2

SK Telecom

SK Telecom's A.X K2 model, trained with Think-Fusion to support thinking and non-thinking responses in one checkpoint. The FP8 release uses sparse gated attention and 262,144-token context.

Benchmark scores

BenchmarkScore
AA-LCR v1.170.0
AA-Omniscience Index-8.2
Artificial Analysis Intelligence Index v4.322.7
Artificial Analysis Intelligence Index v4.3.222.7
Artificial Analysis Omniscience Accuracy18.6
Artificial Analysis Omniscience Hallucination Rate33.0
Artificial Analysis Openness Index50.0
Capability147.7
CritPt (avg@5)8.9
GDP.pdf (Artificial Analysis, All-pass)6.4
GDP.pdf (Artificial Analysis, Mean Criteria)52.2
GDPval-AA v21044
GPQA Diamond (Artificial Analysis avg@5)85.7
Humanity's Last Exam (Text-Only)29.6
SciCode 1.0.1 (Artificial Analysis)41.0
Terminal-Bench 2.139.0
𝜏³-Banking16.1
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