Code Assistant (2026)

Code assistants help developers write, understand, review and refactor software. The category now spans much more than autocomplete: terminal agents that edit a whole repository, documentation tools that keep models from inventing APIs, and toolkits that let agents navigate code semantically instead of by text search.

When choosing, look at which models a tool supports and what they cost, whether commands run in a sandbox or need your approval, and how it extends (MCP servers, skills, project instruction files such as AGENTS.md). Pair any agent with a documentation source such as Context7 to cut down on hallucinated APIs. Our guide to terminal coding agents compares the main options in detail.