VS Code 1.128 (July 8, 2026) leads with multi-chat support for Claude agent sessions. A single session can contain related chats to compare approaches, branch from earlier turns, and run work in parallel. Peer chats stay grouped under the Claude session and do not appear as separate top-level sessions.
Microsoft’s Agents window documentation describes a dedicated agent-first workflow window separate from the code-centric editor, enabling parallel sessions across projects.