Support for Extended Prompt Cache Retention Policy
Open 💬 1 comment Opened Apr 16, 2026 by robertmsale
What variant of Codex are you using?
CLI, App-Server
What feature would you like to see?
/v1/responses API supports Extended Prompt Cache Retention Policy, which allows the prompt cache of a thread to be retained up to 24 hours in storage via the API, as opposed for 10-15 mins in memory. This is available for API users, but it would be nice if subscription backend supports it to have this option in codex.
Additional information
_No response_
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