Wing Python IDE Version 12 - July 20, 2026

Wing Python IDE version 12 has been released. Wing 12 integrates the Claude Code AI coding agent directly into the IDE, with a new Claude Code tool, a Tasks tool for planning and reviewing AI agent work, and a set of MCP servers that give the agent access to Wing's source code analysis, unit testing, debugger, and code review features. Wing 12 makes it faster and cheaper to direct AI agents; see our benchmarks for details.

Wing 12 also adds configurable AI-driven Code Actions, code FIX actions, automated Write Tests, pseudo-terminal support for OS Commands and Debug I/O, support for tools and OS Commands in editor splits, a reorganized Tools menu, automatic test discovery, Preferences search, and more.

Downloads

Wing 12 -- the full Python IDE, available as Wing Pro (for agentic development) or Wing Classic (for manual development) depending on your license, with a free 30-day trial of Wing Pro.

Wing 101 v. 12 -- a simplified free Python IDE for teaching beginning programmers.

Wing 11 and earlier versions are not affected by installation of Wing 12 and may be installed and used independently. However, project files for Wing 11 and earlier are converted when opened by Wing 12 and should be saved under a new name, since Wing 12 projects cannot be opened by older versions of Wing.

New in Wing 12

AI Coding Agent Integration with Claude Code

Wing 12 adds a Claude Code tool that integrates the Claude Code AI coding agent with the IDE. Set Up for Claude Code in the Project menu configures the active project for AI agent development.

A set of MCP (Model Context Protocol) servers gives Claude Code access to Wing's source code analysis, testing, and debugger functionality, so the agent can more efficiently navigate and understand your code, write, run, and fix unit tests, and use the debugger to diagnose difficult runtime errors. In our benchmarks, giving Claude Code access to Wing's MCP servers made agent-driven coding tasks both faster and cheaper.

Tasks Tool

The new Tasks tool lets you plan, queue, execute, review, and audit the history of AI agent development tasks, making it easier to supervise and inspect the agent's work before committing it to revision control.

FIX Features and Write Tests

Wing 12 adds AI agent driven FIX features that hand the current debugger bug, failing unit tests, or code warnings to Claude Code for resolution. New Write Tests items in the Testing and editor context menus prompt the agent to write unit tests for selected code.

Code Actions

Wing 12 also adds AI Code Actions, accessed from the FIX icon in the editor toolbar, that operate on selected code or the enclosing scope. Built-in actions include explaining code, reviewing it for quality or security risks, fixing code warnings, optimizing for performance, and updating comments and docstrings. The action list is user-extensible, so you can add your own prompts for tasks you run often.

Pseudo-Terminal for OS Commands and Debug I/O

The OS Commands and Debug I/O tools now default to using a pseudo-terminal that implements full ANSI terminal emulation, so you can run and debug programs that use color output, cursor positioning, or full-screen TUIs.

Redesigned OS Commands Capability

The OS Commands tool has been replaced with configurable OS Commands in the Tools menu. Each OS Command acts like its own tool, for use in any tool or editor split.

Tools in Editor Splits and Reorganized Tools Menu

Tools can now also be added or dragged to editor splits, allowing for much more flexible workspace layout. The Tools menu has been reorganized into related groups, with less-user and legacy tools in an Other sub-menu, so more commonly used tools area easier to find.

Test Discovery and Preferences Search

Wing 12 adds automatic test file discovery and discovery of individual unit tests within files, so you usually don't need to specify test file patterns or add test files individually. The Preferences dialog now supports text search and back/forward navigation.

Other Minor Features and Improvements

Wing 12 also significantly speeds up source code analysis, prompts for SSH passphrases and HTTPS credentials when needed during VCS operations, detects externally modified files much more quickly and with reduced CPU load, saves and restores tool console scrollback across project close/reopen, supports clickable OSC 8 hyperlinks in OS Commands and Debug I/O tools, adds a preference to select the ssh or plink.exe SSH implementation, shows a notice on the next startup when Wing's previous session ended in an unexpected crash, and makes a number of other bug fixes and usability improvements.

Product Line Changes

Wing 12 simplifies the product line. The Commercial / Non-Commercial use distinction has been replaced by two feature-based product tiers:

Anyone may purchase either tier for any purpose. Existing Commercial and Non-Commercial Use licenses both become Wing Pro. Customers who don't need the AI agent features may move to Wing Classic at renewal time, or any time sooner by contacting support@wingware.com.

Wing Personal has been discontinued. Existing Wing Personal users may continue to use Personal 11.x indefinitely, switch to free Wing 101, or purchase a Wing Classic license. See Pricing for details.

Changes and Incompatibilities

The single-LLM-query AI features originally introduced in Wing 11 (the AI Coder and AI Chat tools) are considered legacy in Wing 12 and hidden from the user interface by default. They remain available in projects that already use them and can be re-enabled with Project Properties > AI in Project Properties or in the .``Projects > AI`` preferences.

See Wing's Claude Code Agent Integration for Wing 12's AI agent approach.

If you have questions, please don't hesitate to contact us at support@wingware.com.