Zed adds parallel coding agents

Zed is making the right bet: the next AI IDE fight is less about one perfect assistant and more about controlling several imperfect agents without losing the codebase. The hard part will be whether this stays elegant once real teams have dozens of long-running threads, diffs, and model-specific quirks in play.

• –Parallel threads make agent work feel closer to a development queue, where one agent can refactor while another investigates tests or docs.
• –Per-thread agent choice matters because teams are already mixing Claude Code, Codex, Gemini CLI, and first-party IDE agents depending on task.
• –Worktree isolation is the practical feature here; parallel agents are risky unless developers can separate changes and review diffs cleanly.
• –The new left-side agent-first layout shows Zed believes conversations are becoming primary navigation, which may annoy users who still want files and Git front and center.
• –Zed’s speed and open-source base remain its edge against VS Code forks, but its thinner extension ecosystem is still the adoption tax.