Update instructions

app.py

@@ -395,9 +395,9 @@ st.sidebar.write("`By:` [@RLanceMartin](https://twitter.com/RLanceMartin)")
 # App
 st.header("`Auto-evaluator`")
 st.info(
-    "`I am an evaluation tool for question-answering. Given documents, I will auto-generate a question-answer eval "
+    "`I am an evaluation tool for question-answering built on LangChain. Given documents, I will auto-generate a question-answer eval "
     "set and evaluate using the selected chain settings. Experiments with different configurations are logged. "
-    "Optionally, provide your own eval set (as a JSON, see docs/karpathy-pod-eval.json for an example).`")
+    "Optionally, provide your own eval set (as a JSON, see docs/karpathy-pod-eval.json for an example). If you don't have acess to GPT-4 or Anthropic, you can use our free hosted app here: https://autoevaluator.langchain.com/`")
 
 with st.form(key='file_inputs'):
     uploaded_file = st.file_uploader("`Please upload a file to evaluate (.txt or .pdf):` ",