Visual Studio Code v1.135 Changelog
What changed in VS Code v1.135 — explained in plain English.
- You can now pick up AI agent chats (like Copilot or Claude) right inside VS Code, even if you started them in a different app.
- There's a new "Rubber Duck" tool to get a second opinion from another AI to catch mistakes.
- The AI chat window got a big redesign to be less cluttered and easier to navigate.
- You can now see exactly how many "tokens" (AI word credits) your chat questions are using.
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This update is all about making your AI coding assistants feel more connected and less messy. It matters most if you use VS Code's AI agents to write or review code, because it lets you switch between apps without losing your train of thought and helps you keep track of what the AI is actually doing.
What's new
- Continue external agent sessions: If you were chatting with an AI coding assistant in another app (like a Copilot or Claude app), you can now open that exact conversation inside VS Code and keep going.
- Rubber Duck (Experimental): This is a fun new tool you can trigger by typing
/rubber-duck. It asks a different AI model to review what your main AI just did. It's like having a peer reviewer to catch missed details or weird edge cases before you trust the code. - Agent host: VS Code now has a dedicated background system (called an agent host) so you can connect to the same AI chat from multiple VS Code windows at the same time.
- Detailed chat usage: AI models use "tokens" (chunks of words) to process your requests. Now, when you hover over an AI's response, you can see exactly how many tokens were used for your input and the AI's output.
Improvements
- Cleaner Agents window layout: The screen where you talk to the AI has been redesigned. It now uses a single side pane instead of a bunch of cluttered panels. It also shows code changes side-by-side if there's room, or stacked on top of each other if the screen is narrow.
- Simpler session controls: The header at the top of your chat is way less crowded. The title is clearer, and little clickable "pills" (badges showing things like file changes or open browsers) sit right above where you type. You can even right-click these pills to choose which ones you want to see.
- Sticky scroll for chat (Experimental): Just like how code stays stuck to the top of your screen when you scroll down a long file, your original question will now stay stuck to the top of the chat while you scroll through a really long AI response.
Fixes
- Fixed an issue where a failed AI tool action was being reported as a success, which could trick you into thinking the AI did something right.
- Squashed a memory leak in the markers table (a memory leak means the app slowly eats up your computer's RAM over time until it gets slow or crashes).
- Fixed broken hover information for
package.jsonfiles if you were using a newer version of the npm package manager (npm 12+). - Fixed a problem where the app was duplicating error warnings when checking your code.
Breaking changes
No breaking changes in this release.
This is our plain-language summary. Read the complete, official notes on the Visual Studio Code official changelog ↗.
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