diff --git a/README.md b/README.md
index 00c5e02..5ff71fa 100644
--- a/README.md
+++ b/README.md
@@ -24,7 +24,7 @@ ollie/
       agent             r/w:   active agent name
       model             r/w:   active model name
       workdir           r/w:   working directory for tool execution and system prompt
-      usage             read:  billed token counts (input, output, requests)
+      usage             read:  token counts (input, output, requests, responses; [estimated] if not reported by backend)
       ctxsz             read:  estimated context size vs context window
   sk/                   dir:   skills (r/w, from OLLIE_SKILLS_PATH or ~/.config/ollie/skills/)
     <name>.md           r/w:   skill SKILL.md content