diff --git a/euclid/utils/llm_connection.py b/euclid/utils/llm_connection.py
index e331f5f..e4a30c6 100644
--- a/euclid/utils/llm_connection.py
+++ b/euclid/utils/llm_connection.py
@@ -8,7 +8,7 @@ from jinja2 import Environment, FileSystemLoader
 from const.llm import MIN_TOKENS_FOR_GPT_RESPONSE, MAX_GPT_MODEL_TOKENS, MAX_QUESTIONS, END_RESPONSE
 from logger.logger import logger
 from termcolor import colored
-from utils.utils import get_prompt_components, fix_json_newlines
+from utils.utils import get_prompt_components, fix_json
 from utils.spinner import spinner_start, spinner_stop
 
 
@@ -90,6 +90,10 @@ def create_gpt_chat_completion(messages: List[dict], req_type, min_tokens=MIN_TO
         'model': 'gpt-4',
         'n': 1,
         'max_tokens': min(4096, MAX_GPT_MODEL_TOKENS - tokens_in_messages),
+        'temperature': 1,
+        'top_p': 1,
+        'presence_penalty': 0,
+        'frequency_penalty': 0,
         'messages': messages,
         'stream': True
     }
@@ -152,15 +156,17 @@ def stream_gpt_completion(data, req_type):
                 continue
 
             try:
-                json_line = load_data_to_json(line)
+                json_line = json.loads(line)
                 if 'error' in json_line:
                     logger.error(f'Error in LLM response: {json_line}')
                     raise ValueError(f'Error in LLM response: {json_line["error"]["message"]}')
+
                 if json_line['choices'][0]['finish_reason'] == 'function_call':
                     function_calls['arguments'] = load_data_to_json(function_calls['arguments'])
                     return return_result({'function_calls': function_calls});
 
                 json_line = json_line['choices'][0]['delta']
+
             except json.JSONDecodeError:
                 logger.error(f'Unable to decode line: {line}')
                 continue  # skip to the next line
@@ -195,4 +201,4 @@ def postprocessing(gpt_response, req_type):
 
 
 def load_data_to_json(string):
-    return json.loads(fix_json_newlines(string))
+    return json.loads(fix_json(string))
diff --git a/euclid/utils/utils.py b/euclid/utils/utils.py
index 6fea50d..771dafb 100644
--- a/euclid/utils/utils.py
+++ b/euclid/utils/utils.py
@@ -145,6 +145,12 @@ def replace_functions(obj):
     else:
         return obj
 
+def fix_json(s):
+    s = s.replace('True', 'true')
+    s = s.replace('False', 'false')
+    # s = s.replace('`', '"')
+    return fix_json_newlines(s)
+
 def fix_json_newlines(s):
     pattern = r'("(?:\\\\n|\\.|[^"\\])*")'