diff --git a/demos/provider-sensitivity/config-multi-provider.txt b/demos/provider-sensitivity/config-multi-provider.txt
index 0659c78..cf5e879 100644
--- a/demos/provider-sensitivity/config-multi-provider.txt
+++ b/demos/provider-sensitivity/config-multi-provider.txt
@@ -1,12 +1,11 @@
-# Demo 3: Provider Sensitivity - Multi-provider configuration
-# Fill in keys for the providers you want to compare.
+# Provider Sensitivity - Multi-provider config
+# Fill in your API keys for each provider you want to compare.
 # The demo will automatically skip providers that are not ready.
 
-# Default provider/model on startup
-provider=ollama
-model=llama3.2:3b
+provider=openai
+model=gpt-5.4-mini
 temperature=0.4
-max_tokens=250
+max_tokens=1000
 timeout_seconds=45
 
 # Cloud API keys (leave empty to skip provider, fill in to enable)
@@ -15,12 +14,10 @@ anthropic_api_key=
 gemini_api_key=
 
 # Ollama local endpoint (no key required)
-# Start with: ollama serve
-# Ensure your selected model is pulled, for example: ollama pull llama3.2
 ollama_base_url=http://localhost:11434
 
-# Optional per-provider overrides
-openai_model=gpt-4o-mini
-anthropic_model=claude-3-5-haiku-latest
-gemini_model=gemini-2.0-flash
+# Per-provider model overrides
+openai_model=gpt-5.4-mini
+anthropic_model=claude-haiku-4-5-20251001
+gemini_model=gemini-2.5-flash
 ollama_model=llama3.2:3b
diff --git a/demos/provider-sensitivity/provider-sensitivity.nlogox b/demos/provider-sensitivity/provider-sensitivity.nlogox
index eb6798e..fd59aab 100644
--- a/demos/provider-sensitivity/provider-sensitivity.nlogox
+++ b/demos/provider-sensitivity/provider-sensitivity.nlogox
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <model version="NetLogo 7.0.3" snapToGrid="true">
-  <code><![CDATA[; ABOUTME: Telephone Game demo — parallel provider chains paraphrase a seed message, revealing semantic drift.
+  <code><![CDATA[; ABOUTME: Telephone Game demo — parallel provider chains paraphrase a seed message, revealing lexical drift.
 ; ABOUTME: Uses turtles, directed links, Jaccard-based drift scoring, optional thinking mode.
 
 extensions [llm]
@@ -12,7 +12,7 @@ turtles-own [
   chain-position      ;; 0 = seed, 1..N-1 = paraphrase positions
   current-message     ;; message this turtle holds
   original-message    ;; seed message (for drift comparison)
-  drift-score         ;; [0,1] semantic drift from original
+  drift-score         ;; [0,1] lexical drift from original (Jaccard distance on word sets)
   length-ratio        ;; response length / original length
   processed?          ;; has this turtle completed its paraphrase?
   error?              ;; did this turtle's LLM call fail?
@@ -478,9 +478,9 @@ end
 ;; ===== DEFAULT MODELS =====
 
 to-report get-default-model [prov]
-  if prov = "openai"    [ report "gpt-4o-mini" ]
-  if prov = "anthropic" [ report "claude-3-5-haiku-latest" ]
-  if prov = "gemini"    [ report "gemini-2.0-flash" ]
+  if prov = "openai"    [ report "gpt-5.4-mini" ]
+  if prov = "anthropic" [ report "claude-haiku-4-5-20251001" ]
+  if prov = "gemini"    [ report "gemini-2.5-flash" ]
   if prov = "ollama"    [ report "llama3.2:3b" ]
   report "unknown"
 end
@@ -644,8 +644,8 @@ end
     <slider x="15" step="1" y="170" max="10" width="230" display="chain-length" height="50" min="3" direction="Horizontal" default="6.0" variable="chain-length"></slider>
     <switch x="15" y="225" height="40" on="true" variable="show-labels?" width="230" display="show-labels?"></switch>
     <switch x="15" y="265" height="40" on="false" variable="thinking-mode?" width="230" display="thinking-mode?"></switch>
-    <plot x="45" autoPlotX="true" yMax="1.0" autoPlotY="true" yAxis="Drift" y="505" xMin="0.0" height="165" legend="true" xMax="10.0" yMin="0.0" width="550" xAxis="Chain Position" display="Semantic Drift by Provider">
-      <setup>set-current-plot "Semantic Drift by Provider"</setup>
+    <plot x="45" autoPlotX="true" yMax="1.0" autoPlotY="true" yAxis="Drift" y="505" xMin="0.0" height="165" legend="true" xMax="10.0" yMin="0.0" width="550" xAxis="Chain Position" display="Lexical Drift by Provider">
+      <setup>set-current-plot "Lexical Drift by Provider"</setup>
       <update><![CDATA[let idx 0
 foreach ready-providers-list [ prov ->
   create-temporary-plot-pen prov
@@ -680,7 +680,7 @@ foreach ready-providers-list [ prov ->
   </widgets>
   <info>## WHAT IS IT?
 
-A Telephone Game for LLMs. Parallel chains of turtles pass a seed message through repeated paraphrasing by different LLM providers. Each position in the chain asks its provider to rephrase what it received. As the message travels, semantic drift accumulates — and different providers drift at different rates and in different ways.
+A Telephone Game for LLMs. Parallel chains of turtles pass a seed message through repeated paraphrasing by different LLM providers. Each position in the chain asks its provider to rephrase what it received. As the message travels, lexical drift accumulates — vocabulary shifts as each provider substitutes its own word choices, and different providers drift at different rates.
 
 ## HOW IT WORKS