diff --git a/state/model-policy.json b/state/model-policy.json
index 6bf8d32..6116449 100644
--- a/state/model-policy.json
+++ b/state/model-policy.json
@@ -184,8 +184,8 @@
   },
   "tier_to_external_map": {
     "frontier": "github-copilot/gpt-5.2",
-    "mid-tier": "github-copilot/gpt-5-mini",
-    "lightweight": "opencode/gpt-5-nano"
+    "mid-tier": "github-copilot/claude-sonnet-4.5",
+    "lightweight": "github-copilot/claude-haiku-4.5"
   },
   "task_routing": {
     "reasoning": "github-copilot/gpt-5.2",