CLAIM-2026-08-11-02
An AgentCore runtime-instance session runs for a maximum of 14 days and is stopped automatically at that limit, against up to 8 hours for the serverless microVM runtime.
Why it matters
The 14-day vs 8-hour contrast is the whole reason the retention question is new rather than theoretical.
Sources
- amazonwebse2026run
- amazonwebse2026agentcore
- amazonwebse2026runtime