diff --git a/haystack/utils/openai_utils.py b/haystack/utils/openai_utils.py
index 82fb829b5..19181acf5 100644
--- a/haystack/utils/openai_utils.py
+++ b/haystack/utils/openai_utils.py
@@ -84,6 +84,9 @@ def _openai_text_completion_tokenization_details(model_name: str):
         if "text-davinci" in model_name:
             max_tokens_limit = 4097
             tokenizer_name = model_tokenizer
+        elif model_name.startswith("gpt-3.5-turbo-16k"):
+            max_tokens_limit = 16384
+            tokenizer_name = model_tokenizer
         elif model_name.startswith("gpt-3"):
             max_tokens_limit = 4096
             tokenizer_name = model_tokenizer