What are AI developer tools?

AI developer tools are coding assistants built on large language models that read your code and help you write, fix, and understand it. They range from inline autocomplete in your editor, to chat that answers questions about a file, to agents that plan and edit changes across many files. Most plug into an IDE, the terminal, or your Git workflow.

What AI developer tools do

  • Inline code completion as you type
  • Chat about a file, function, or error
  • Multi-file edits from a natural-language request
  • Generate unit tests and fix failing ones
  • Explain, refactor, and document existing code
  • Agents that run commands and iterate on output

Who uses AI developer tools

01

Day-to-day coding

Autocomplete, quick fixes, and inline chat that keep engineers in flow while writing code.

02

Onboarding to a codebase

Ask what a function does or where logic lives when joining a new project or language.

03

Shipping features with agents

Hand an agent a task and let it draft, edit, and test changes across files.

04

Review and refactoring

Catch bugs, suggest refactors, and write tests before code reaches a pull request.

How AI developer tools work

They send your prompt along with nearby code and relevant files to a model trained on large amounts of source code. The model predicts the next lines or a full diff, which the tool inserts or shows for you to accept. Agentic tools go further, calling the compiler, tests, or a repo search, then reading the output and retrying until the change works.

AI developer tools FAQ