Compatibility record
Does Codex support Background agents?
Supported
Codex cloud tasks run independently in separate environments and can be delegated in parallel.
Last verified2026-07-27
Confidencehigh
Primary sources1
What this state means
Supported, with the qualification kept attached.
Codex has primary evidence for background agents on the reviewed product surface. Plan and platform availability may still change.
Capability definition
Runs delegated work asynchronously while the user leaves the active session.
Scope boundary
A long synchronous response or an agent loop that requires an open session is not a background agent.
Evidence
Primary records behind the answer.
- 01
“Each task runs in its own cloud sandbox environment.”