feat: openai default model uses gpt-4o-mini (#1526)

embedchain/configs/chroma.yaml

@@ -5,7 +5,7 @@ app:
 llm:
   provider: openai
   config:
-    model: 'gpt-3.5-turbo'
+    model: 'gpt-4o-mini'
     temperature: 0.5
     max_tokens: 1000
     top_p: 1

embedchain/configs/full-stack.yaml

@@ -10,7 +10,7 @@ chunker:
 llm:
   provider: openai
   config:
-    model: 'gpt-3.5-turbo'
+    model: 'gpt-4o-mini'
     temperature: 0.5
     max_tokens: 1000
     top_p: 1

embedchain/configs/opensearch.yaml

@@ -8,7 +8,7 @@ app:
 llm:
   provider: openai
   config:
-    model: 'gpt-3.5-turbo'
+    model: 'gpt-4o-mini'
     temperature: 0.5
     max_tokens: 1000
     top_p: 1