SEOUL, February 19 (AJP) - SK Telecom announced Wednesday it has fully transitioned to its in-house developed A.X artificial intelligence model for call summarization features, completely replacing external models like ChatGPT.
"By using our in-house AI model for the call summary service, which handles up to 50 million uses daily, we have significantly reduced API costs previously paid to overseas AI model developers like OpenAI," said Kim Tae-yoon, SK Telecom's vice president.
The company began developing Korean-language specialized AI models in 2018 after Google released BERT, creating models like KoBERT and KoGPT-2, which evolved into the current system.
The development utilized SK Telecom's supercomputer "Titan," equipped with approximately 1,500 NVIDIA A100 GPUs, training and refining the AI model over three years.
Initially, SK Telecom employed a "multi-LLM agent" strategy, using A.X alongside ChatGPT and Claude. The company gradually transitioned to exclusively using A.X for call summaries over the past year.
SK Telecom is now expanding A.X as the foundational AI model across SK Group and into B2B and B2G sectors. The company plans to evolve this into a reasoning model that produces human-like results and develop it into a multimodal foundation model capable of understanding document images by the end of the year.
"While we initially collaborated with overseas model developers like OpenAI, pursuing both cooperation and self-reliance has become the fundamental axis of our AI strategy," Kim said.
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