The modern AI coding stack: what each tool is actually for

There are six major AI coding tools in the mainstream toolkit right now, and they are not interchangeable. Here's the map: what each is for, where each shines, where each falls down.

The lineup

• Cursor — the most popular AI-native IDE; deep project context; excellent for heads-down refactoring work.
• Claude Code — Anthropic's CLI; agentic engineering from the terminal; extensible via MCP, hooks, and subagents.
• GitHub Copilot — the default mass-market option; strong autocomplete, Copilot Chat, Workspaces for larger changes, agent mode for multi-step edits.
• VS Code native AI — Microsoft's built-in panel and inline edits; tightly integrated with the VS Code you already use.
• Windsurf (formerly Codeium) — "flow" model; steps back to understand context, then makes coordinated multi-file edits.
• JetBrains AI Assistant — IDE-native for IntelliJ / PyCharm / WebStorm; best for teams already in JetBrains.

What they're actually good at

How the categories differ

• Autocomplete-first (Copilot): you drive, AI completes small.
• Chat + edit (Cursor, VS Code AI, Windsurf): you describe, AI proposes multi-line edits.
• Agent-style (Claude Code, Cursor Agent, Copilot Agent Mode): you delegate a task; AI works in a loop.

The tools blur — all of them have all three modes now. The question is which mode each does best.

Which model is inside

Most tools let you choose: Claude (various versions), GPT (various), Gemini, open models. Claude's coding-oriented variants lead for complex reasoning; GPT leads on raw throughput; open models (Qwen Coder, DeepSeek) are catching up.

Model choice matters almost as much as tool choice. A mediocre tool with a strong model often beats a strong tool with a weak model.

How engineers actually use them

Common in-the-wild stacks:

• Cursor + Copilot: some teams layer Copilot's inline completion on top of Cursor's chat. Extra cost; noticeable productivity.
• Cursor + Claude Code: IDE for editing, terminal for repo-wide agentic tasks.
• Copilot only: large enterprises that are standardized on GitHub.
• VS Code + one of the above as extension: easier to adopt in orgs where Cursor is politically hard.

The cost picture

All of these are $10-30/seat/month on the personal tier, $15-40/seat/month at the enterprise tier. Per-call model costs vary but are typically included in the subscription for most usage.

The cost dwarfs any per-token model cost you'd pay API-to-API; the subscription model makes AI coding effectively unmetered for typical use.

The choice

You're probably not going to pick just one. Most engineers converge on two — a primary IDE assistant (Cursor, VS Code with native AI, or Windsurf) + a CLI agentic tool (Claude Code).

Try two for a month. Keep the one(s) you actually reach for in daily work. There's no prestige prize for picking right, only leverage from reaching for the tool that fits the current task.