diff --git a/TTS/tts/models/xtts.py b/TTS/tts/models/xtts.py
index f305b760..3fd04351 100644
--- a/TTS/tts/models/xtts.py
+++ b/TTS/tts/models/xtts.py
@@ -420,9 +420,9 @@ class Xtts(BaseTTS):
         ref_audio_path,
         language,
         # GPT inference
-        temperature=0.65,
-        length_penalty=1,
-        repetition_penalty=2.0,
+        temperature=0.75,
+        length_penalty=1.0,
+        repetition_penalty=10.0,
         top_k=50,
         top_p=0.85,
         do_sample=True,
@@ -502,9 +502,9 @@ class Xtts(BaseTTS):
         gpt_cond_latent,
         speaker_embedding,
         # GPT inference
-        temperature=0.65,
-        length_penalty=1,
-        repetition_penalty=2.0,
+        temperature=0.75,
+        length_penalty=1.0,
+        repetition_penalty=10.0,
         top_k=50,
         top_p=0.85,
         do_sample=True,
@@ -612,9 +612,9 @@ class Xtts(BaseTTS):
         stream_chunk_size=20,
         overlap_wav_len=1024,
         # GPT inference
-        temperature=0.65,
-        length_penalty=1,
-        repetition_penalty=2.0,
+        temperature=0.75,
+        length_penalty=1.0,
+        repetition_penalty=10.0,
         top_k=50,
         top_p=0.85,
         do_sample=True,