diff --git a/backend/example.env b/backend/example.env
index 2822c92e7..ef6580129 100644
--- a/backend/example.env
+++ b/backend/example.env
@@ -42,10 +42,9 @@ LLM_MODEL_CONFIG_diffbot="diffbot,diffbot_api_key"
 LLM_MODEL_CONFIG_azure_ai_gpt_35="azure_deployment_name,azure_endpoint or base_url,azure_api_key,api_version"
 LLM_MODEL_CONFIG_azure_ai_gpt_4o="gpt-4o,https://YOUR-ENDPOINT.openai.azure.com/,azure_api_key,api_version"
 LLM_MODEL_CONFIG_groq_llama3_70b="model_name,base_url,groq_api_key"
-LLM_MODEL_CONFIG_anthropic_claude_3_5_sonnet="model_name,anthropic_api_key"
+LLM_MODEL_CONFIG_anthropic_claude_4_sonnet="model_name,anthropic_api_key"    #model_name="claude-sonnet-4-20250514"
 LLM_MODEL_CONFIG_fireworks_llama4_maverick="model_name,fireworks_api_key"
-LLM_MODEL_CONFIG_bedrock_claude_3_5_sonnet="model_name,aws_access_key_id,aws_secret__access_key,region_name"
-LLM_MODEL_CONFIG_ollama_llama3="model_name,model_local_url"
+LLM_MODEL_CONFIG_ollama_llama3="llama3_model_name,model_local_url"
 YOUTUBE_TRANSCRIPT_PROXY="https://user:pass@domain:port"
 EFFECTIVE_SEARCH_RATIO=5
 GRAPH_CLEANUP_MODEL="openai_gpt_4o"
diff --git a/frontend/src/utils/Constants.ts b/frontend/src/utils/Constants.ts
index 8a13a7b01..7628de00d 100644
--- a/frontend/src/utils/Constants.ts
+++ b/frontend/src/utils/Constants.ts
@@ -26,11 +26,10 @@ export const llms =
         'azure_ai_gpt_4o',
         'ollama_llama3',
         'groq_llama3_70b',
-        'anthropic_claude_3_7_sonnet',
+        'anthropic_claude_4_sonnet',
         'fireworks_llama4_maverick',
         'fireworks_llama4_scout',
         'fireworks_qwen72b_instruct',
-        'bedrock_claude_3_5_sonnet',
         'bedrock_nova_micro_v1',
         'bedrock_nova_lite_v1',
         'bedrock_nova_pro_v1',
@@ -54,10 +53,9 @@ export const supportedLLmsForRagas = [
   'azure_ai_gpt_35',
   'azure_ai_gpt_4o',
   'groq_llama3_70b',
-  'anthropic_claude_3_7_sonnet',
+  'anthropic_claude_4_sonnet',
   'fireworks_llama4_maverick',
   'fireworks_llama4_scout',
-  'bedrock_claude_3_5_sonnet',
   'openai_gpt_o3_mini',
   'llama4_maverick',
   'fireworks_qwen3_30b',
@@ -72,10 +70,9 @@ export const supportedLLmsForGroundTruthMetrics = [
   'azure_ai_gpt_35',
   'azure_ai_gpt_4o',
   'groq_llama3_70b',
-  'anthropic_claude_3_7_sonnet',
+  'anthropic_claude_4_sonnet',
   'fireworks_llama4_maverick',
   'fireworks_llama4_scout',
-  'bedrock_claude_3_5_sonnet',
   'openai_gpt_o3_mini',
   'llama4_maverick',
   'fireworks_qwen3_30b',