GitHub Copilot in VS Code v1.131

GitHub Copilot in VS Code v1.131 was released on .

Summary

Agents Agent host As mentioned in our last few releases, we're rearchitecting how agent sessions work in VS Code around the agent host - a dedicated process that runs agent harnesses such as Copilo...

Release Context

  • This was the 1st GitHub Copilot in VS Code release of 2026 tracked by Havoptic.

Shipped around the same time

Within 3 days of this release, other AI coding tools also shipped:

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Release Notes

Agents Agent host As mentioned in our last few releases, we're rearchitecting how agent sessions work in VS Code around the agent host - a dedicated process that runs agent harnesses such as Copilot, Claude, and Codex, based on the Agent Host Protocol (AHP). Because a session lives in its own process, the same session can be connected to and rendered from multiple VS Code windows at once. The agent host's Copilot agent is powered by the Copilot SDK, which means that its behavior and functi... More information about running subagents (Agents window) When working on complex tasks, the agent can delegate tasks to subagents to run them in parallel in its own context window. You can now quickly see what a running subagent is doing without opening its conversation. In the Agents window, the main conversation shows the following information for each running subagent: The model used by the subagent How long the subagent has been running The tool that the subagent is actively calling Select a running sub... Chat VS Code pet (Experimental) A new highly experimental pet has been discovered in VS Code! Enter /vscode-pet in chat to meet your new companion. From September 10 through September 17, 2026, submit a name for the new VS Code pet. Review the contest terms and conditions.

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