Durable Objects now remain alive for the duration of active outbound connections instead of being evicted after 70-140 seconds of inactivity, with a 15-minute per-connection ceiling.
July 1, 2026
Summary
LLM token streaming and long-running agent tasks no longer get cut off mid-stream when using outbound WebSocket or TCP connections. This eliminates a critical failure mode for AI agents that depend on sustained external connections.
Why it matters
LLM token streaming and long-running agent tasks no longer get cut off mid-stream when using outbound WebSocket or TCP connections. This eliminates a critical failure mode for AI agents that depend on sustained external connections.
Implementation verdict
Replaces workarounds that forced periodic pings or connection resets to prevent eviction. Requires no code changes for existing patterns—the behavior is automatic. Ready now; this is a deployed change as of June 19, 2026.
Sources
Dev Signal
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