diff --git a/cosyvoice/bin/export_jit.py b/cosyvoice/bin/export_jit.py
index 4eedc1a..0013d64 100644
--- a/cosyvoice/bin/export_jit.py
+++ b/cosyvoice/bin/export_jit.py
@@ -23,8 +23,10 @@ import torch
 ROOT_DIR = os.path.dirname(os.path.abspath(__file__))
 sys.path.append('{}/../..'.format(ROOT_DIR))
 sys.path.append('{}/../../third_party/Matcha-TTS'.format(ROOT_DIR))
-from cosyvoice.cli.cosyvoice import CosyVoice, CosyVoice2
+from cosyvoice.cli.cosyvoice import AutoModel
+from cosyvoice.cli.model import CosyVoiceModel, CosyVoice2Model, CosyVoice3Model
 from cosyvoice.utils.file_utils import logging
+from cosyvoice.utils.class_utils import get_model_type
 
 
 def get_args():
@@ -57,15 +59,17 @@ def main():
     torch._C._jit_set_profiling_mode(False)
     torch._C._jit_set_profiling_executor(False)
 
-    try:
-        model = CosyVoice(args.model_dir)
-    except Exception:
-        try:
-            model = CosyVoice2(args.model_dir)
-        except Exception:
-            raise TypeError('no valid model_type!')
+    model = AutoModel(model_dir=args.model_dir)
 
-    if not isinstance(model, CosyVoice2):
+    if get_model_type(model.model) == CosyVoiceModel:
+        # 1. export flow encoder
+        flow_encoder = model.model.flow.encoder
+        script = get_optimized_script(flow_encoder)
+        script.save('{}/flow.encoder.fp32.zip'.format(args.model_dir))
+        script = get_optimized_script(flow_encoder.half())
+        script.save('{}/flow.encoder.fp16.zip'.format(args.model_dir))
+        logging.info('successfully export flow_encoder')
+    elif get_model_type(model.model) == CosyVoice2Model:
         # 1. export llm text_encoder
         llm_text_encoder = model.model.llm.text_encoder
         script = get_optimized_script(llm_text_encoder)
@@ -90,13 +94,7 @@ def main():
         script.save('{}/flow.encoder.fp16.zip'.format(args.model_dir))
         logging.info('successfully export flow_encoder')
     else:
-        # 3. export flow encoder
-        flow_encoder = model.model.flow.encoder
-        script = get_optimized_script(flow_encoder)
-        script.save('{}/flow.encoder.fp32.zip'.format(args.model_dir))
-        script = get_optimized_script(flow_encoder.half())
-        script.save('{}/flow.encoder.fp16.zip'.format(args.model_dir))
-        logging.info('successfully export flow_encoder')
+        raise ValueError('unsupported model type')
 
 
 if __name__ == '__main__':
diff --git a/cosyvoice/bin/export_onnx.py b/cosyvoice/bin/export_onnx.py
index e4857da..58e7708 100644
--- a/cosyvoice/bin/export_onnx.py
+++ b/cosyvoice/bin/export_onnx.py
@@ -27,7 +27,7 @@ from tqdm import tqdm
 ROOT_DIR = os.path.dirname(os.path.abspath(__file__))
 sys.path.append('{}/../..'.format(ROOT_DIR))
 sys.path.append('{}/../../third_party/Matcha-TTS'.format(ROOT_DIR))
-from cosyvoice.cli.cosyvoice import CosyVoice, CosyVoice2, CosyVoice3
+from cosyvoice.cli.cosyvoice import AutoModel
 from cosyvoice.utils.file_utils import logging
 
 
@@ -58,16 +58,7 @@ def main():
     logging.basicConfig(level=logging.DEBUG,
                         format='%(asctime)s %(levelname)s %(message)s')
 
-    try:
-        model = CosyVoice(args.model_dir)
-    except Exception:
-        try:
-            model = CosyVoice2(args.model_dir)
-        except Exception:
-            try:
-                model = CosyVoice3(args.model_dir)
-            except Exception:
-                raise TypeError('no valid model_type!')
+    model = AutoModel(model_dir=args.model_dir)
 
     # 1. export flow decoder estimator
     estimator = model.model.flow.decoder.estimator
diff --git a/cosyvoice/cli/cosyvoice.py b/cosyvoice/cli/cosyvoice.py
index ea63fc0..6395d60 100644
--- a/cosyvoice/cli/cosyvoice.py
+++ b/cosyvoice/cli/cosyvoice.py
@@ -196,7 +196,7 @@ class CosyVoice2(CosyVoice):
 
 class CosyVoice3(CosyVoice2):
 
-    def __init__(self, model_dir, load_jit=False, load_trt=False, load_vllm=False, fp16=False, trt_concurrent=1):
+    def __init__(self, model_dir, load_trt=False, load_vllm=False, fp16=False, trt_concurrent=1):
         self.instruct = True if '-Instruct' in model_dir else False
         self.model_dir = model_dir
         self.fp16 = fp16
@@ -215,9 +215,9 @@ class CosyVoice3(CosyVoice2):
                                           '{}/spk2info.pt'.format(model_dir),
                                           configs['allowed_special'])
         self.sample_rate = configs['sample_rate']
-        if torch.cuda.is_available() is False and (load_jit is True or load_trt is True or fp16 is True):
-            load_jit, load_trt, fp16 = False, False, False
-            logging.warning('no cuda device, set load_jit/load_trt/fp16 to False')
+        if torch.cuda.is_available() is False and (load_trt is True or fp16 is True):
+            load_trt, fp16 = False, False
+            logging.warning('no cuda device, set load_trt/fp16 to False')
         self.model = CosyVoice3Model(configs['llm'], configs['flow'], configs['hift'], fp16)
         self.model.load('{}/llm.pt'.format(model_dir),
                         '{}/flow.pt'.format(model_dir),
@@ -225,8 +225,23 @@ class CosyVoice3(CosyVoice2):
         if load_vllm:
             self.model.load_vllm('{}/vllm'.format(model_dir))
         if load_trt:
+            if self.fp16 is True:
+                logging.warning('DiT tensorRT fp16 engine have some performance issue, use at caution!')
             self.model.load_trt('{}/flow.decoder.estimator.{}.mygpu.plan'.format(model_dir, 'fp16' if self.fp16 is True else 'fp32'),
                                 '{}/flow.decoder.estimator.fp32.onnx'.format(model_dir),
                                 trt_concurrent,
                                 self.fp16)
         del configs
+
+
+def AutoModel(**kwargs):
+    if not os.path.exists(kwargs['model_dir']):
+        kwargs['model_dir'] = snapshot_download(kwargs['model_dir'])
+    if os.path.exists('{}/cosyvoice.yaml'.format(kwargs['model_dir'])):
+        return CosyVoice(**kwargs)
+    elif os.path.exists('{}/cosyvoice2.yaml'.format(kwargs['model_dir'])):
+        return CosyVoice2(**kwargs)
+    elif os.path.exists('{}/cosyvoice3.yaml'.format(kwargs['model_dir'])):
+        return CosyVoice3(**kwargs)
+    else:
+        raise TypeError('No valid model type found!')
diff --git a/cosyvoice/cli/frontend.py b/cosyvoice/cli/frontend.py
index ae2b485..4292931 100644
--- a/cosyvoice/cli/frontend.py
+++ b/cosyvoice/cli/frontend.py
@@ -122,6 +122,9 @@ class CosyVoiceFrontEnd:
         return speech_feat, speech_feat_len
 
     def text_normalize(self, text, split=True, text_frontend=True):
+        # NOTE skip text_frontend when ssml symbol in text
+        if '<|' in text and '|>' in text:
+            text_frontend = False
         if isinstance(text, Generator):
             logging.info('get tts_text generator, will skip text_normalize!')
             return [text]
diff --git a/cosyvoice/utils/file_utils.py b/cosyvoice/utils/file_utils.py
index 358a9f6..b173ef2 100644
--- a/cosyvoice/utils/file_utils.py
+++ b/cosyvoice/utils/file_utils.py
@@ -92,29 +92,14 @@ def convert_onnx_to_trt(trt_model, trt_kwargs, onnx_model, fp16):
 def export_cosyvoice2_vllm(model, model_path, device):
     if os.path.exists(model_path):
         return
-    pad_to = DEFAULT_VOCAB_PADDING_SIZE = 64
-    vocab_size = model.speech_embedding.num_embeddings
-    feature_size = model.speech_embedding.embedding_dim
-    pad_vocab_size = ((vocab_size + pad_to - 1) // pad_to) * pad_to
 
     dtype = torch.bfloat16
     # lm_head
     use_bias = True if model.llm_decoder.bias is not None else False
-    new_lm_head = torch.nn.Linear(in_features=feature_size, out_features=pad_vocab_size, bias=use_bias)
-    with torch.no_grad():
-        new_lm_head.weight[:vocab_size] = model.llm_decoder.weight
-        new_lm_head.weight[vocab_size:] = 0
-        if use_bias is True:
-            new_lm_head.bias[:vocab_size] = model.llm_decoder.bias
-            new_lm_head.bias[vocab_size:] = 0
-    model.llm.model.lm_head = new_lm_head
-    new_codec_embed = torch.nn.Linear(in_features=feature_size, out_features=pad_vocab_size)
+    model.llm.model.lm_head = model.llm_decoder
     # embed_tokens
     embed_tokens = model.llm.model.model.embed_tokens
-    with torch.no_grad():
-        new_codec_embed.weight[:vocab_size] = model.speech_embedding.weight
-        new_codec_embed.weight[vocab_size:] = 0
-    model.llm.model.set_input_embeddings(new_codec_embed)
+    model.llm.model.set_input_embeddings(model.speech_embedding)
     model.llm.model.to(device)
     model.llm.model.to(dtype)
     tmp_vocab_size = model.llm.model.config.vocab_size
@@ -122,14 +107,12 @@ def export_cosyvoice2_vllm(model, model_path, device):
     del model.llm.model.generation_config.eos_token_id
     del model.llm.model.config.bos_token_id
     del model.llm.model.config.eos_token_id
-    model.llm.model.config.vocab_size = pad_vocab_size
+    model.llm.model.config.vocab_size = model.speech_embedding.num_embeddings
     model.llm.model.config.tie_word_embeddings = False
     model.llm.model.config.use_bias = use_bias
     model.llm.model.save_pretrained(model_path)
     if use_bias is True:
         os.system('sed -i s@Qwen2ForCausalLM@CosyVoice2ForCausalLM@g {}/config.json'.format(os.path.abspath(model_path)))
-    else:
-        os.system('sed -i s@Qwen2ForCausalLM@Qwen2ForCausalLM@g {}/config.json'.format(os.path.abspath(model_path)))
     model.llm.model.config.vocab_size = tmp_vocab_size
     model.llm.model.config.tie_word_embeddings = tmp_tie_embedding
     model.llm.model.set_input_embeddings(embed_tokens)
diff --git a/example.py b/example.py
index 6216cf5..164acf6 100644
--- a/example.py
+++ b/example.py
@@ -1,6 +1,6 @@
 import sys
 sys.path.append('third_party/Matcha-TTS')
-from cosyvoice.cli.cosyvoice import CosyVoice, CosyVoice2, CosyVoice3
+from cosyvoice.cli.cosyvoice import AutoModel
 from cosyvoice.utils.file_utils import load_wav
 import torchaudio
 
@@ -8,14 +8,14 @@ import torchaudio
 def cosyvoice_example():
     """ CosyVoice Usage, check https://fun-audio-llm.github.io/ for more details
     """
-    cosyvoice = CosyVoice('pretrained_models/CosyVoice-300M-SFT', load_jit=False, load_trt=False, fp16=False)
+    cosyvoice = AutoModel(model_dir='pretrained_models/CosyVoice-300M-SFT')
     # sft usage
     print(cosyvoice.list_available_spks())
     # change stream=True for chunk stream inference
     for i, j in enumerate(cosyvoice.inference_sft('你好，我是通义生成式语音大模型，请问有什么可以帮您的吗？', '中文女', stream=False)):
         torchaudio.save('sft_{}.wav'.format(i), j['tts_speech'], cosyvoice.sample_rate)
 
-    cosyvoice = CosyVoice('pretrained_models/CosyVoice-300M')
+    cosyvoice = AutoModel(model_dir='pretrained_models/CosyVoice-300M')
     # zero_shot usage, <|zh|><|en|><|jp|><|yue|><|ko|> for Chinese/English/Japanese/Cantonese/Korean
     for i, j in enumerate(cosyvoice.inference_zero_shot('收到好友从远方寄来的生日礼物，那份意外的惊喜与深深的祝福让我心中充满了甜蜜的快乐，笑容如花儿般绽放。', '希望你以后能够做的比我还好呦。', './asset/zero_shot_prompt.wav', stream=False)):
         torchaudio.save('zero_shot_{}.wav'.format(i), j['tts_speech'], cosyvoice.sample_rate)
@@ -26,7 +26,7 @@ def cosyvoice_example():
     for i, j in enumerate(cosyvoice.inference_vc('./asset/zero_shot_prompt.wav', './asset/cross_lingual_prompt.wav', stream=False)):
         torchaudio.save('vc_{}.wav'.format(i), j['tts_speech'], cosyvoice.sample_rate)
 
-    cosyvoice = CosyVoice('pretrained_models/CosyVoice-300M-Instruct')
+    cosyvoice = AutoModel(model_dir='pretrained_models/CosyVoice-300M-Instruct')
     # instruct usage, support <laughter></laughter><strong></strong>[laughter][breath]
     for i, j in enumerate(cosyvoice.inference_instruct('在面对挑战时，他展现了非凡的<strong>勇气</strong>与<strong>智慧</strong>。', '中文男', 'Theo \'Crimson\', is a fiery, passionate rebel leader. Fights with fervor for justice, but struggles with impulsiveness.<|endofprompt|>', stream=False)):
         torchaudio.save('instruct_{}.wav'.format(i), j['tts_speech'], cosyvoice.sample_rate)
@@ -34,7 +34,7 @@ def cosyvoice_example():
 def cosyvoice2_example():
     """ CosyVoice2 Usage, check https://funaudiollm.github.io/cosyvoice2/ for more details
     """
-    cosyvoice = CosyVoice2('pretrained_models/CosyVoice2-0.5B', load_jit=False, load_trt=False, load_vllm=False, fp16=False)
+    cosyvoice = AutoModel(model_dir='pretrained_models/CosyVoice2-0.5B')
 
     # NOTE if you want to reproduce the results on https://funaudiollm.github.io/cosyvoice2, please add text_frontend=False during inference
     # zero_shot usage
@@ -68,7 +68,7 @@ def cosyvoice2_example():
 def cosyvoice3_example():
     """ CosyVoice3 Usage, check https://funaudiollm.github.io/cosyvoice3/ for more details
     """
-    cosyvoice = CosyVoice3('pretrained_models/CosyVoice3-0.5B', load_jit=False, load_trt=False, fp16=False)
+    cosyvoice = AutoModel(model_dir='pretrained_models/CosyVoice3-0.5B')
     # zero_shot usage
     for i, j in enumerate(cosyvoice.inference_zero_shot('八百标兵奔北坡，北坡炮兵并排跑，炮兵怕把标兵碰，标兵怕碰炮兵炮。', 'You are a helpful assistant.<|endofprompt|>希望你以后能够做的比我还好呦。', './asset/zero_shot_prompt.wav', stream=False)):
         torchaudio.save('zero_shot_{}.wav'.format(i), j['tts_speech'], cosyvoice.sample_rate)
diff --git a/vllm_example.py b/vllm_example.py
index e4222af..5fbfe7d 100644
--- a/vllm_example.py
+++ b/vllm_example.py
@@ -4,7 +4,7 @@ from vllm import ModelRegistry
 from cosyvoice.vllm.cosyvoice2 import CosyVoice2ForCausalLM
 ModelRegistry.register_model("CosyVoice2ForCausalLM", CosyVoice2ForCausalLM)
 
-from cosyvoice.cli.cosyvoice import CosyVoice2, CosyVoice3
+from cosyvoice.cli.cosyvoice import AutoModel
 from cosyvoice.utils.common import set_all_random_seed
 from tqdm import tqdm
 
@@ -12,7 +12,7 @@ from tqdm import tqdm
 def cosyvoice2_example():
     """ CosyVoice2 vllm usage
     """
-    cosyvoice = CosyVoice2('pretrained_models/CosyVoice2-0.5B', load_jit=True, load_trt=True, load_vllm=True, fp16=True)
+    cosyvoice = AutoModel(model_dir='pretrained_models/CosyVoice2-0.5B', load_jit=True, load_trt=True, load_vllm=True, fp16=True)
     for i in tqdm(range(100)):
         set_all_random_seed(i)
         for _, _ in enumerate(cosyvoice.inference_zero_shot('收到好友从远方寄来的生日礼物，那份意外的惊喜与深深的祝福让我心中充满了甜蜜的快乐，笑容如花儿般绽放。', '希望你以后能够做的比我还好呦。', './asset/zero_shot_prompt.wav', stream=False)):
@@ -21,7 +21,7 @@ def cosyvoice2_example():
 def cosyvoice3_example():
     """ CosyVoice3 vllm usage
     """
-    cosyvoice = CosyVoice3('pretrained_models/CosyVoice3-0.5B', load_trt=True, load_vllm=True, fp16=True)
+    cosyvoice = AutoModel(model_dir='pretrained_models/CosyVoice3-0.5B', load_trt=True, load_vllm=True, fp16=False)
     for i in tqdm(range(100)):
         set_all_random_seed(i)
         for _, _ in enumerate(cosyvoice.inference_zero_shot('收到好友从远方寄来的生日礼物，那份意外的惊喜与深深的祝福让我心中充满了甜蜜的快乐，笑容如花儿般绽放。', 'You are a helpful assistant.<|endofprompt|>希望你以后能够做的比我还好呦。', './asset/zero_shot_prompt.wav', stream=False)):
diff --git a/webui.py b/webui.py
index 3552cd9..ee5a962 100644
--- a/webui.py
+++ b/webui.py
@@ -22,8 +22,8 @@ import random
 import librosa
 ROOT_DIR = os.path.dirname(os.path.abspath(__file__))
 sys.path.append('{}/third_party/Matcha-TTS'.format(ROOT_DIR))
-from cosyvoice.cli.cosyvoice import CosyVoice, CosyVoice2
-from cosyvoice.utils.file_utils import load_wav, logging
+from cosyvoice.cli.cosyvoice import AutoModel
+from cosyvoice.utils.file_utils import logging
 from cosyvoice.utils.common import set_all_random_seed
 
 inference_mode_list = ['预训练音色', '3s极速复刻', '跨语种复刻', '自然语言控制']
@@ -42,23 +42,9 @@ def generate_seed():
         "value": seed
     }
 
-
-def postprocess(speech, top_db=60, hop_length=220, win_length=440):
-    speech, _ = librosa.effects.trim(
-        speech, top_db=top_db,
-        frame_length=win_length,
-        hop_length=hop_length
-    )
-    if speech.abs().max() > max_val:
-        speech = speech / speech.abs().max() * max_val
-    speech = torch.concat([speech, torch.zeros(1, int(cosyvoice.sample_rate * 0.2))], dim=1)
-    return speech
-
-
 def change_instruction(mode_checkbox_group):
     return instruct_dict[mode_checkbox_group]
 
-
 def generate_audio(tts_text, mode_checkbox_group, sft_dropdown, prompt_text, prompt_wav_upload, prompt_wav_record, instruct_text,
                    seed, stream, speed):
     if prompt_wav_upload is not None:
@@ -118,15 +104,13 @@ def generate_audio(tts_text, mode_checkbox_group, sft_dropdown, prompt_text, pro
             yield (cosyvoice.sample_rate, i['tts_speech'].numpy().flatten())
     elif mode_checkbox_group == '3s极速复刻':
         logging.info('get zero_shot inference request')
-        prompt_speech_16k = postprocess(load_wav(prompt_wav, prompt_sr))
         set_all_random_seed(seed)
-        for i in cosyvoice.inference_zero_shot(tts_text, prompt_text, prompt_speech_16k, stream=stream, speed=speed):
+        for i in cosyvoice.inference_zero_shot(tts_text, prompt_text, prompt_wav, stream=stream, speed=speed):
             yield (cosyvoice.sample_rate, i['tts_speech'].numpy().flatten())
     elif mode_checkbox_group == '跨语种复刻':
         logging.info('get cross_lingual inference request')
-        prompt_speech_16k = postprocess(load_wav(prompt_wav, prompt_sr))
         set_all_random_seed(seed)
-        for i in cosyvoice.inference_cross_lingual(tts_text, prompt_speech_16k, stream=stream, speed=speed):
+        for i in cosyvoice.inference_cross_lingual(tts_text, prompt_wav, stream=stream, speed=speed):
             yield (cosyvoice.sample_rate, i['tts_speech'].numpy().flatten())
     else:
         logging.info('get instruct inference request')
@@ -181,16 +165,10 @@ if __name__ == '__main__':
                         default=8000)
     parser.add_argument('--model_dir',
                         type=str,
-                        default='pretrained_models/CosyVoice2-0.5B',
+                        default='pretrained_models/CosyVoice3-0.5B',
                         help='local path or modelscope repo id')
     args = parser.parse_args()
-    try:
-        cosyvoice = CosyVoice(args.model_dir)
-    except Exception:
-        try:
-            cosyvoice = CosyVoice2(args.model_dir)
-        except Exception:
-            raise TypeError('no valid model_type!')
+    model = AutoModel(model_dir=args.model_dir)
 
     sft_spk = cosyvoice.list_available_spks()
     if len(sft_spk) == 0: