Claude API

Claude is a family of large language models and service developed and hosted by Anthropic, an AI safety and research company building reliable, interpretable, and steerable AI systems. 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 such as Claude Code, by third-party services via Anthropic's API and enterprise agreements, and as an alternative model provider for the model-agnostic Strands Agents framework. Claude can also power applications such as banking assistants, whose generations can be traced as part of an AI application evaluation workflow.

Claude.ai is Anthropic's AI offering. The supplied material describes Claude as being used for first-pass review of code changes, with review results backed by verification evidence, and notes recent refreshes intended to improve performance.

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 prompt cache is Anthropic's context-caching feature for Claude. It reuses repeated context across turns, with cached tokens costing roughly a tenth of the base token cost according to the video. Caching requires strict prefix matching, so prompts should place system instructions first, followed by tools, project memory, session state, and then per-turn messages.

Claude Quickstarts is an actively maintained collection of example projects from Anthropic for building applications with the Claude API. It covers customer-support and financial-analysis applications, computer and browser use, coding agents, managed agents, MCP servers, chat integrations, scheduled workflows, knowledge systems, and other deployment patterns. Each quickstart includes its own setup instructions and serves as a foundation developers can customize; the repository welcomes issues and pull requests and is licensed under the MIT License.