Amp

Amp is an advanced agentic coding tool built by Sourcegraph that maximizes what's possible with today's frontier models. It features autonomous reasoning, comprehensive code editing, and complex task execution capabilities. Available as VS Code extension (compatible with Cursor, Windsurf, and VSCodium) and as a command-line tool. Amp uses Claude Sonnet 4 for most tasks with up to 432,000 tokens of context. It supports thread sharing for team collaboration, subagents for complex tasks, and includes Amp Tab completion engine. The tool can run commands, edit files, understand code, and execute multi-step workflows autonomously. It features prepaid credit system with no model selectors - always uses the best available models.