Workflow
Switch agents without restarting the work
The task should keep its history even when a different agent or model is better suited to the next step.
Choose for the step in front of you
Planning, implementation, review, and recovery do not always benefit from the same agent or model. Locking a whole task to the choice made at the beginning turns a useful default into a constraint.
OpenTandem keeps the task as the durable unit. Agent and model selection can change as the work changes, without moving the discussion into another disconnected window.
A workspace above the tools
Codex and Claude Code remain the tools doing the execution. OpenTandem gives them a common task history and a consistent place for instructions and outputs.