SK Telecom of South Korea invested an additional $100 million in Anthropic, following an earlier investment by its venture capital arm. The two companies said they would jointly develop a large language model tailored to telecommunications operators, fine-tuning Claude for customer service, marketing, and sales, with support for Korean, English, Japanese, Spanish, and other languages. SK Telecom CEO Ryu Young-sang said the company aimed to gain leadership in the AI ecosystem alongside its global telco partners.