Developers are leaving Copilot and editor plugins for Claude Code and Codex

Two tools grew and two shrank

JetBrains, which makes editors, surveyed more than 15,000 professional developers for its Developer Ecosystem Survey 2026.

JetBrains’ own summary: “GitHub Copilot has lost its leadership.” The two tools that grew are made by Anthropic and OpenAI, the companies that train the models inside them.

The lab’s own plan is the cheap one

Prices are from each company’s page on 9 October 2026.

A lab that owns the model can sell its agent on a flat plan. A plugin maker buys the model and passes a meter on to you. One full run of a ten-stage paper pipeline uses about 200,000 input and 100,000 output tokens, which costs 2.80 US dollars at Opus 5.5 API prices. A subscriber on a flat plan runs it again and again inside the plan. Token management covers the arithmetic.

New abilities ship in the labs’ own tools

Anthropic’s pricing page adds that “Claude Cowork is now just Claude,” rolling out to Pro and Max plans, so its second agent comes with the same subscription.

Computer use takes the editor out of the loop

An editor plugin sees the file you have open. On the OSWorld benchmark of real desktop tasks, the top agent completed 86.0% on 9 October 2026 against a human baseline of 72.36%. An agent that can run the terminal, the browser and the spreadsheet needs no integration with an editor to do the work.

The editors now host the agents

VS Code’s documentation, dated 7 October 2026, describes agents that “find relevant code, make changes, and run checks without you directing each search, edit, and test run,” and lists Anthropic’s Claude and OpenAI’s Codex among the agents it can run. The Claude Code plugin for JetBrains editors “requires the Claude Code CLI, installed separately.”

The editor has become a window onto an agent made by someone else. Claude Code explained shows what you get by going to the agent directly, and the SEC filings guide is a first project that needs no editor at all.