Bug blindness makes familiar failures disappear from a team’s attention, especially when workarounds and expert habits hide the real user experience. Fresh environments, task-level metrics, and repeatable tests can bring those failures back into view.
Codex’s MultiAgentV2 started encrypting sub-agent `message` payloads, storing only ciphertext (`encrypted_content`) and leaving plaintext empty (`content`). That improves privacy, but can erase the readable delegation details in rollout/history, making audits and debugging harder.
Some coding agents arrive at the model already “loaded” with tens of thousands of tokens of system prompt and tool scaffolding. A side-by-side comparison found ~33k-token overhead for Claude Code versus ~7k for OpenCode, with prompt caching benefits depending on prefix stability.