diff --git a/src/multi_swarm/dashboard/nicegui_app.py b/src/multi_swarm/dashboard/nicegui_app.py
index 701b152..56bcf2d 100644
--- a/src/multi_swarm/dashboard/nicegui_app.py
+++ b/src/multi_swarm/dashboard/nicegui_app.py
@@ -402,6 +402,11 @@ def _snapshot(run_id: str) -> dict[str, Any]:
     evals_total = max(pop_size * n_gens, 1)
     evals_done = len(evals)
     gens_done = int(gens["completed_at"].notna().sum()) if not gens.empty else 0
+    # runs.total_cost_usd è 0 finché complete_run non viene chiamato.
+    # Per le run in corso leggiamo la somma live da cost_records.
+    live_cost = float(repo.total_cost(run_id)) if ov["status"] == "running" else float(
+        ov["total_cost_usd"]
+    )
 
     top_fit = float(evals["fitness"].max()) if evals_done else float("nan")
     median_fit = float(evals["fitness"].median()) if evals_done else float("nan")
@@ -414,7 +419,7 @@ def _snapshot(run_id: str) -> dict[str, Any]:
         "name": cfg.get("run_name", "—"),
         "started_at": ov["started_at"],
         "completed_at": ov["completed_at"] or "—",
-        "cost_usd": ov["total_cost_usd"],
+        "cost_usd": live_cost,
         "pop_size": pop_size,
         "n_gens": n_gens,
         "evals_done": evals_done,