Codex /side chat may cause near-full prompt cache misses, user flags design
YouJiacheng · x · 2026-09-11
YouJiacheng reports that Codex's /side chat appears to cause a near-full prompt cache miss, directly questioning Codex lead Thibault Sottiaux about whether this is intentional design. For heavy Codex users, cache misses mean noticeably higher token costs and latency; the official response is worth watching.
Related event: Users Say Codex /side Chat Wipes Prompt Cache and Burns Tokens(3 posts)→
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