subagent: haiku 5-5 is near free up to high effort on a small context, but max costs about what sonnet does

hive-subagent-mcp/src/mcp.rs

@@ -57,9 +57,10 @@ struct StartArgs {
     /// models). Independent of `model`, so a cheap model at high effort or
     /// an expensive one at low effort are both valid combinations, not
     /// just the two extremes. See the `base:claude-subagents` skill for
-    /// Anthropic's own guidance on choosing between levels — note that on
-    /// Haiku specifically, cost doesn't scale with effort the way it does
-    /// on a frontier model, so there's no cost reason to cap it at `medium`.
+    /// Anthropic's own guidance on choosing between levels. On Haiku with a
+    /// small context, effort up to `high` costs next to nothing, so there's
+    /// no cost reason to cap it at `medium`; at `max` it costs about what
+    /// Sonnet does.
     #[serde(default)]
     effort: Option<String>,
     /// Path to a file holding the subagent's actual task instructions. A