Amp is an agentic AI coding tool built by Sourcegraph, designed to run autonomous coding agents directly from the terminal and inside popular editors. Billed as a frontier coding agent built for leading models, Amp works as a command-line interface and as an extension for VS Code, Cursor, and Windsurf, and lets you watch and steer the same agent from the web and mobile. Rather than just completing code, Amp plans and executes multi-step tasks across a codebase, proposing changes as reviewable diffs that you stage and approve. Its composable tool system goes beyond file editing with built-in sub-agents and skills: an Oracle that reasons deeply about your code, a Librarian that researches external libraries, a code review agent, a walkthrough skill for annotated diagrams, and even an image tool called Painter. Amp offers different execution modes, including a fast everyday mode and a Deep mode that uses extended reasoning for complex problems. It supports leading frontier models such as Claude Opus and Sonnet and the GPT-5 series, and emphasizes transparent, usage-based pricing. The Amp client and CLI are free to install; you pay only for the underlying model and tool usage, which Sourcegraph passes through with zero markup for individuals and team workspaces (minimum $5 credit purchase). Team workspaces share a pooled credit balance, while an Enterprise tier adds SSO, zero data retention, thread visibility controls, and managed settings. Amp targets professional developers and teams who want a powerful, model-agnostic agent that fits into their existing terminal and editor workflows.