Claude Max

Claude 5.1 is described in the supplied video evidence as an Anthropic AI model for programming, scientific research, and agentic tasks. The video claims that it can work continuously for dozens of hours on codebases and multistep research, with separate lower pricing for cached, ordinary, and complex agent tasks.

Claude is a family of large language models developed and hosted by Anthropic. Available through Anthropic's web chat products and a commercial API, Claude accepts text prompts (and structured inputs or file attachments via the API) and returns natural-language and code outputs for tasks such as coding, summarization, document Q&A, and general business and productivity workflows; it is used inside Anthropic products (for example Claude Code) and by third-party services via Anthropic's API and enterprise agreements.

Anthropic API is the cloud API provided by Anthropic, the AI research company, offering programmatic access to its Claude family of large language models for text generation, chat, and reasoning. The API is intended for developers to integrate Anthropic's models into applications and services.

Claude Opus is an AI model developed by Anthropic, the company behind the Claude assistant. It is part of the Claude family and is designed for complex language tasks, including research and content generation. The model is available through Anthropic's platform.

Claude Opus 4.5 is an AI foundation model developed by Anthropic for complex reasoning, software engineering, and agentic workflows. It is available through Anthropic's API and Claude applications.