diff --git a/open_notebook/config.py b/open_notebook/config.py
index 9b15710..7a45dc9 100644
--- a/open_notebook/config.py
+++ b/open_notebook/config.py
@@ -6,7 +6,6 @@ from loguru import logger
 from open_notebook.domain.models import DefaultModels
 from open_notebook.models import get_model
 
-# todo: enable config file overwrite with env vars
 current_dir = os.path.dirname(os.path.abspath(__file__))
 project_root = os.path.dirname(current_dir)
 config_path = os.path.join(project_root, "open_notebook_config.yaml")
diff --git a/open_notebook/models/embedding_models.py b/open_notebook/models/embedding_models.py
index ac9466c..43119cf 100644
--- a/open_notebook/models/embedding_models.py
+++ b/open_notebook/models/embedding_models.py
@@ -39,7 +39,6 @@ class OllamaEmbeddingModel(EmbeddingModel):
         """
         Embeds the content using Open AI embedding
         """
-        # todo: make this Singleton
         text = text.replace("\n", " ")
         response = requests.post(
             f"{self.base_url}/api/embed",
diff --git a/stream_app/chat.py b/stream_app/chat.py
index ae2e732..00d8bd5 100644
--- a/stream_app/chat.py
+++ b/stream_app/chat.py
@@ -54,8 +54,6 @@ def execute_chat(txt_input, session_id):
     return result
 
 
-# todo: se eu for usar o token count, preciso deixar configuravel
-# seria bom ter um total de tokens no admin em algum lugar
 def chat_sidebar(session_id):
     context = build_context(session_id=session_id)
     tokens = token_count(str(context) + str(st.session_state[session_id]["messages"]))