A.X K1

Parameters

519B

Published

Dec 30, 2025

A.X K1 is an AI model developed by SK Telecom (South Korea), first published in December 2025. It works in the language domain, on tasks such as code generation, language modeling/generation, translation and 6 more.

Epoch AI has no training-compute estimate for this model. The model has 519,000,000,000 parameters. Training ran on 1,536 NVIDIA H200 for about 1.5K hours. The compute alone is estimated at $10M in 2023 dollars.

Epoch AI rates the confidence of this record as confident.

Full record

Organization: SK Telecom
Country of organization: South Korea
Domain: Language
Task: Code generation, Language modeling/generation, Translation, Instruction interpretation, Mathematical reasoning, Chat, Language modeling, Language generation, Text autocompletion
Parameters: 519,000,000,000
Training hardware: NVIDIA H200
Chips used: 1,536
Training time: 1,536 h
Training cost (2023 USD): $10M
Numerical format: BF16
Epoch confidence: Confident