Anthropic Anthropic is a silicon valley startup and AI company that develops and sells LLM models and LLM-based products and services. They also developed the Model Context Protocol for passing information between models. Key Information Founded as a competitor to OpenAI Developed the Claude model series, including Claude 3 Opus, Sonnet, and Haiku Known for safety-focused AI development approaches Created the Model Context Protocol (MCP) standard Relationship to Other Models Anthropic are one of the earliest competitors to OpenAI and their Claude Sonnet and Opus series models were early competitors to GPT-4. Claude Models The Claude model series includes several versions: Claude 3 Series Anthropic Claude 3 Opus Anthropic Claude 3 Sonnet Anthropic Claude 3 Haiku Other Models Anthropic Claude 2 Anthropic Claude 1 Related Content Model Context Protocol