diff --git a/.env.example b/.env.example
index c848504..5d33db0 100644
--- a/.env.example
+++ b/.env.example
@@ -16,6 +16,15 @@ EMERGENCE_OPENROUTER_MODEL=anthropic/claude-3.5-haiku
 # Default model when using Ollama
 EMERGENCE_OLLAMA_MODEL=llama3.2:3b
 
+# Per-agent model overrides (works with both providers)
+# Uncomment any of these to assign a specific model to a single agent.
+# Useful for "Mixed World" experiments (see README "Time Dilation" section).
+# Example:
+# EMERGENCE_AGENT_ANCHOR_MODEL=anthropic/claude-3.5-haiku
+# EMERGENCE_AGENT_FLORA_MODEL=openai/gpt-4o-mini
+# EMERGENCE_AGENT_LOVELY_MODEL=meta-llama/llama-3.3-70b-instruct
+# EMERGENCE_AGENT_SPARK_MODEL=google/gemma-3-4b-it
+
 # Ollama server
 EMERGENCE_LLM_URL=http://127.0.0.1:11434