Replace GPT and Claude models to latest, better and cheaper models (#118)

* Updated GPT and Claude models to latest, better and cheaper models

* updated more files to use GPT-5 and Sonnet/Haiku 4.5 because theu are the latest, cheaper and better models

plugins/llm-application-dev/skills/llm-evaluation/SKILL.md

@@ -186,7 +186,7 @@ def calculate_factuality(claim, knowledge_base):
 ### Single Output Evaluation
 ```python
 def llm_judge_quality(response, question):
-    """Use GPT-4 to judge response quality."""
+    """Use GPT-5 to judge response quality."""
     prompt = f"""Rate the following response on a scale of 1-10 for:
 1. Accuracy (factually correct)
 2. Helpfulness (answers the question)
@@ -205,7 +205,7 @@ Provide ratings in JSON format:
 """
 
     result = openai.ChatCompletion.create(
-        model="gpt-4",
+        model="gpt-5",
         messages=[{"role": "user", "content": prompt}],
         temperature=0
     )
@@ -236,7 +236,7 @@ Answer with JSON:
 """
 
     result = openai.ChatCompletion.create(
-        model="gpt-4",
+        model="gpt-5",
         messages=[{"role": "user", "content": prompt}],
         temperature=0
     )

plugins/llm-application-dev/skills/prompt-engineering-patterns/references/chain-of-thought.md

@@ -65,7 +65,7 @@ def self_consistency_cot(query, n=5, temperature=0.7):
     responses = []
     for _ in range(n):
         response = openai.ChatCompletion.create(
-            model="gpt-4",
+            model="gpt-5",
             messages=[{"role": "user", "content": prompt}],
             temperature=temperature
         )