At its core, VS Code is built on an open source project called Code OSS, published under the permissive MIT license.
October 2025 update makes the Claude Sonnet 4.5 and Claude Haiku 4.5 coding models available for use in the GitHub Copilot ...
The feature extends GitHub Copilot's Agent Mode to handle larger, multi-step coding tasks with structured reasoning, ...
VS Code 1.105 also introduces a built-in MCP server marketplace and allows users to resume recent Copilot Chat sessions.