diff --git a/app/services/meal_plan/llm_planner.py b/app/services/meal_plan/llm_planner.py
index bc017e5..11859b4 100644
--- a/app/services/meal_plan/llm_planner.py
+++ b/app/services/meal_plan/llm_planner.py
@@ -5,6 +5,10 @@
 Returns suggestions for human review — never writes to the DB directly.
 The API endpoint presents the suggestions and waits for user approval
 before calling store.upsert_slot().
+
+Routing: pass a router from get_meal_plan_router() in llm_router.py.
+Cloud: cf-text via cf-orch (3B-7B GGUF, ~2GB VRAM).
+Local: LLMRouter (ollama / vllm / openai-compat per llm.yaml).
 """
 from __future__ import annotations
 
diff --git a/app/services/meal_plan/llm_timing.py b/app/services/meal_plan/llm_timing.py
index 7847c69..8918b8b 100644
--- a/app/services/meal_plan/llm_timing.py
+++ b/app/services/meal_plan/llm_timing.py
@@ -3,7 +3,11 @@
 """Estimate cook times for recipes missing corpus prep/cook time fields.
 
 Used only when tier allows `meal_plan_llm_timing`. Falls back gracefully
-when LLMRouter is unavailable.
+when no LLM backend is available.
+
+Routing: pass a router from get_meal_plan_router() in llm_router.py.
+Cloud: cf-text via cf-orch (3B GGUF, ~2GB VRAM).
+Local: LLMRouter (ollama / vllm / openai-compat per llm.yaml).
 """
 from __future__ import annotations