xAI is a US artificial intelligence company founded by Elon Musk, developing the Grok chatbot and large language models, closely linked with the social platform X.
DeepSeek is a Chinese artificial intelligence company that develops open-weight large language models and reasoning models, known for efficient training and its low-cost chat and API services.
Mistral AI is a French artificial intelligence company building open-weight and commercial large language models, with the Le Chat assistant and APIs for developers and enterprises.
OpenAI is a US artificial intelligence research company behind ChatGPT, GPT models, DALL·E and Sora, offering AI products and APIs for consumers, developers and enterprises.
Anthropic is a US AI safety company that develops the Claude family of large language models, offering assistants and APIs focused on helpful, honest and harmless behaviour.