diff --git a/demos/currency_exchange/arch_config.yaml b/demos/currency_exchange/arch_config.yaml
index 64e0f253..f8776c48 100644
--- a/demos/currency_exchange/arch_config.yaml
+++ b/demos/currency_exchange/arch_config.yaml
@@ -9,7 +9,7 @@ listener:
 llm_providers:
   - name: gpt-4o
     access_key: $OPENAI_API_KEY
-    provider: openai
+    provider_interface: openai
     model: gpt-4o
 
 system_prompt: |
diff --git a/demos/hr_agent/arch_config.yaml b/demos/hr_agent/arch_config.yaml
index e7bf60f2..09264821 100644
--- a/demos/hr_agent/arch_config.yaml
+++ b/demos/hr_agent/arch_config.yaml
@@ -7,7 +7,7 @@ listener:
 # Centralized way to manage LLMs, manage keys, retry logic, failover and limits in a central way
 llm_providers:
   - name: OpenAI
-    provider: openai
+    provider_interface: openai
     access_key: $OPENAI_API_KEY
     model: gpt-4o-mini
     default: true
diff --git a/demos/insurance_agent/arch_config.yaml b/demos/insurance_agent/arch_config.yaml
index ce8a0088..9e5c6ed3 100644
--- a/demos/insurance_agent/arch_config.yaml
+++ b/demos/insurance_agent/arch_config.yaml
@@ -9,7 +9,7 @@ system_prompt: |
 
 llm_providers:
   - name: OpenAI
-    provider: openai
+    provider_interface: openai
     access_key: $OPENAI_API_KEY
     model: gpt-4o
     default: true
diff --git a/demos/llm_routing/README.md b/demos/llm_routing/README.md
index f5a49971..8418b7f8 100644
--- a/demos/llm_routing/README.md
+++ b/demos/llm_routing/README.md
@@ -1,5 +1,5 @@
 # LLM Routing
-This demo shows how you can arch gateway to manage keys and route to appropricate LLM.
+This demo shows how you can arch gateway to manage keys and route to appropriate LLM.
 
 # Starting the demo
 1. Please make sure the [pre-requisites](https://github.com/katanemo/arch/?tab=readme-ov-file#prerequisites) are installed correctly
@@ -9,11 +9,50 @@ This demo shows how you can arch gateway to manage keys and route to appropricat
    ```
 1. Navigate to http://localhost:18080/
 
+Following screen shows an example of interaction with arch gateway showing dynamic routing. You can select between different LLMs using "override model" option in the chat UI.
+
+![LLM Routing Demo](llm_routing_demo.png)
+
+You can also pass in a header to override model when sending prompt. Following example shows how you can use `x-arch-llm-provider-hint` header to override model selection,
+
+```bash
+
+$ curl --header 'Content-Type: application/json' \
+  --header 'x-arch-llm-provider-hint: ministral-3b' \
+  --data '{"messages": [{"role": "user","content": "hello"}]}' \
+  http://localhost:12000/v1/chat/completions 2> /dev/null | jq .
+{
+  "id": "xxx",
+  "object": "chat.completion",
+  "created": 1737760394,
+  "model": "ministral-3b-latest",
+  "choices": [
+    {
+      "index": 0,
+      "message": {
+        "role": "assistant",
+        "tool_calls": null,
+        "content": "Hello! How can I assist you today? Let's chat about anything you'd like. 😊"
+      },
+      "finish_reason": "stop"
+    }
+  ],
+  "usage": {
+    "prompt_tokens": 4,
+    "total_tokens": 25,
+    "completion_tokens": 21
+  }
+}
+
+```
+
 # Observability
-Arch gateway publishes stats endpoint at http://localhost:19901/stats. In this demo we are using prometheus to pull stats from arch and we are using grafana to visalize the stats in dashboard. To see grafana dashboard follow instructions below,
+Arch gateway publishes stats endpoint at http://localhost:19901/stats. In this demo we are using prometheus to pull stats from arch and we are using grafana to visualize the stats in dashboard. To see grafana dashboard follow instructions below,
 
 1. Navigate to http://localhost:3000/ to open grafana UI (use admin/grafana as credentials)
 1. From grafana left nav click on dashboards and select "Intelligent Gateway Overview" to view arch gateway stats
+1. For tracing you can head over to http://localhost:16686/ to view recent traces.
 
-# Selecting different LLM
-You can pick different LLM based on header `x-arch-llm-provider-hint` to override default LLM.
+Following is a screenshot of tracing UI showing call received by arch gateway and making upstream call to LLM,
+
+![Jaeger Tracing](jaeger_tracing_llm_routing.png)
diff --git a/demos/llm_routing/arch_config.yaml b/demos/llm_routing/arch_config.yaml
index 620a1d10..f7ce78cd 100644
--- a/demos/llm_routing/arch_config.yaml
+++ b/demos/llm_routing/arch_config.yaml
@@ -9,23 +9,23 @@ listener:
 llm_providers:
   - name: gpt-4o-mini
     access_key: $OPENAI_API_KEY
-    provider: openai
+    provider_interface: openai
     model: gpt-4o-mini
     default: true
 
   - name: gpt-3.5-turbo-0125
     access_key: $OPENAI_API_KEY
-    provider: openai
+    provider_interface: openai
     model: gpt-3.5-turbo-0125
 
   - name: gpt-4o
     access_key: $OPENAI_API_KEY
-    provider: openai
+    provider_interface: openai
     model: gpt-4o
 
   - name: ministral-3b
     access_key: $MISTRAL_API_KEY
-    provider: mistral
+    provider_interface: mistral
     model: ministral-3b-latest
 
 tracing:
diff --git a/demos/llm_routing/jaeger_tracing_llm_routing.png b/demos/llm_routing/jaeger_tracing_llm_routing.png
new file mode 100644
index 00000000..e18016d1
Binary files /dev/null and b/demos/llm_routing/jaeger_tracing_llm_routing.png differ
diff --git a/demos/llm_routing/llm_routing_demo.png b/demos/llm_routing/llm_routing_demo.png
new file mode 100644
index 00000000..50f25677
Binary files /dev/null and b/demos/llm_routing/llm_routing_demo.png differ
diff --git a/demos/multi_turn_rag_agent/arch_config.yaml b/demos/multi_turn_rag_agent/arch_config.yaml
index 0faffd6d..1399965f 100644
--- a/demos/multi_turn_rag_agent/arch_config.yaml
+++ b/demos/multi_turn_rag_agent/arch_config.yaml
@@ -14,7 +14,7 @@ endpoints:
 llm_providers:
   - name: gpt-4o-mini
     access_key: $OPENAI_API_KEY
-    provider: openai
+    provider_interface: openai
     model: gpt-4o-mini
     default: true
 
diff --git a/demos/network_agent/arch_config.yaml b/demos/network_agent/arch_config.yaml
index f46dd204..ad3bfae5 100644
--- a/demos/network_agent/arch_config.yaml
+++ b/demos/network_agent/arch_config.yaml
@@ -7,7 +7,7 @@ listener:
 # Centralized way to manage LLMs, manage keys, retry logic, failover and limits in a central way
 llm_providers:
   - name: OpenAI
-    provider: openai
+    provider_interface: openai
     access_key: $OPENAI_API_KEY
     model: gpt-3.5-turbo
     default: true
diff --git a/demos/weather_forecast/arch_config.yaml b/demos/weather_forecast/arch_config.yaml
index b2c11df5..94a6bdfb 100644
--- a/demos/weather_forecast/arch_config.yaml
+++ b/demos/weather_forecast/arch_config.yaml
@@ -18,18 +18,18 @@ overrides:
 llm_providers:
   - name: gpt-4o-mini
     access_key: $OPENAI_API_KEY
-    provider: openai
+    provider_interface: openai
     model: gpt-4o-mini
     default: true
 
   - name: gpt-3.5-turbo-0125
     access_key: $OPENAI_API_KEY
-    provider: openai
+    provider_interface: openai
     model: gpt-3.5-turbo-0125
 
   - name: gpt-4o
     access_key: $OPENAI_API_KEY
-    provider: openai
+    provider_interface: openai
     model: gpt-4o
 
 system_prompt: |
diff --git a/docs/source/concepts/includes/arch_config.yaml b/docs/source/concepts/includes/arch_config.yaml
index 44da39ff..c78f35f7 100644
--- a/docs/source/concepts/includes/arch_config.yaml
+++ b/docs/source/concepts/includes/arch_config.yaml
@@ -9,7 +9,7 @@ listener:
 # Centralized way to manage LLMs, manage keys, retry logic, failover and limits in a central way
 llm_providers:
   - name: OpenAI
-    provider: openai
+    provider_interface: openai
     access_key: $OPENAI_API_KEY
     model: gpt-4o
     default: true
diff --git a/docs/source/guides/includes/arch_config.yaml b/docs/source/guides/includes/arch_config.yaml
index 73fdff00..415c74aa 100644
--- a/docs/source/guides/includes/arch_config.yaml
+++ b/docs/source/guides/includes/arch_config.yaml
@@ -9,7 +9,7 @@ listener:
 # Centralized way to manage LLMs, manage keys, retry logic, failover and limits in a central way
 llm_providers:
   - name: OpenAI
-    provider: openai
+    provider_interface: openai
     access_key: $OPENAI_API_KEY
     model: gpt-4o
     default: true
diff --git a/tests/archgw/arch_config.yaml b/tests/archgw/arch_config.yaml
index 3f450717..2c3d85d5 100644
--- a/tests/archgw/arch_config.yaml
+++ b/tests/archgw/arch_config.yaml
@@ -14,18 +14,18 @@ endpoints:
 llm_providers:
   - name: gpt-4o-mini
     access_key: $OPENAI_API_KEY
-    provider: openai
+    provider_interface: openai
     model: gpt-4o-mini
     default: true
 
   - name: gpt-3.5-turbo-0125
     access_key: $OPENAI_API_KEY
-    provider: openai
+    provider_interface: openai
     model: gpt-3.5-turbo-0125
 
   - name: gpt-4o
     access_key: $OPENAI_API_KEY
-    provider: openai
+    provider_interface: openai
     model: gpt-4o
 
 system_prompt: |