U-NEXT, operated by U-NEXT Corporation, a subsidiary of U-NEXT HOLDINGS, is a leading Japanese streaming platform offering over-the-top (OTT) content. As of May 2024, it boasts approximately 4.34 million paying subscribers, making it the largest homegrown video-on-demand (VOD) service in Japan.

Claude is a family of large language models developed by Anthropic. The first model was released in March 2023. The Claude 3 family, released in March 2024, consists of three models: Haiku optimized for speed, Sonnet balancing capabilities and performance, and Opus designed for complex reasoning tasks. These models can process both text and images, with Claude 3 Opus demonstrating enhanced capabilities in areas like mathematics, programming, and logical reasoning compared to previous versions.

Grok is a generative artificial intelligence chatbot developed by xAI. Based on the large language model (LLM) of the same name, it was launched in 2023 as an initiative by Elon Musk. The chatbot is advertised as having a "sense of humor" and direct access to X, formerly known as Twitter.