diff --git a/astrbot/core/config/default.py b/astrbot/core/config/default.py
index 246914ee0c..49def4a577 100644
--- a/astrbot/core/config/default.py
+++ b/astrbot/core/config/default.py
@@ -1623,10 +1623,14 @@ class ChatProviderTemplate(TypedDict):
                         "type": "gsvi_tts_api",
                         "provider": "gpt_sovits_inference",
                         "provider_type": "text_to_speech",
-                        "api_base": "http://127.0.0.1:5000",
-                        "character": "",
-                        "emotion": "default",
                         "enable": False,
+                        "api_key": "",
+                        "api_base": "http://127.0.0.1:8000",
+                        "version": "v4",
+                        "character": "",
+                        "prompt_text_lang": "中文",
+                        "emotion": "默认",
+                        "text_lang": "中文",
                         "timeout": 20,
                     },
                     "FishAudio TTS(API)": {
diff --git a/astrbot/core/provider/sources/gsvi_tts_source.py b/astrbot/core/provider/sources/gsvi_tts_source.py
index 425e801f46..55a0975de6 100644
--- a/astrbot/core/provider/sources/gsvi_tts_source.py
+++ b/astrbot/core/provider/sources/gsvi_tts_source.py
@@ -1,6 +1,5 @@
-import os
-import urllib.parse
 import uuid
+from pathlib import Path
 
 import aiohttp
 
@@ -23,37 +22,55 @@ def __init__(
         provider_settings: dict,
     ) -> None:
         super().__init__(provider_config, provider_settings)
-        self.api_base = provider_config.get("api_base", "http://127.0.0.1:5000")
+        self.api_key = provider_config.get("api_key", "")
+        self.api_base = provider_config.get("api_base", "http://127.0.0.1:8000")
         self.api_base = self.api_base.removesuffix("/")
+        self.version = provider_config.get("version", "v4")
         self.character = provider_config.get("character")
-        self.emotion = provider_config.get("emotion")
+        self.prompt_text_lang = provider_config.get("prompt_text_lang", "中文")
+        self.emotion = provider_config.get("emotion", "默认")
+        self.text_lang = provider_config.get("text_lang", "中文")
 
     async def get_audio(self, text: str) -> str:
         temp_dir = get_astrbot_temp_path()
-        path = os.path.join(temp_dir, f"gsvi_tts_{uuid.uuid4()}.wav")
-        params = {"text": text}
+        path = Path(temp_dir) / f"gsvi_tts_{uuid.uuid4()}.wav"
+        url = f"{self.api_base}/infer_single"
 
-        if self.character:
-            params["character"] = self.character
-        if self.emotion:
-            params["emotion"] = self.emotion
+        headers = {"Content-Type": "application/json"}
+        if self.api_key:
+            headers["Authorization"] = f"Bearer {self.api_key}"
 
-        query_parts = []
-        for key, value in params.items():
-            encoded_value = urllib.parse.quote(str(value))
-            query_parts.append(f"{key}={encoded_value}")
-
-        url = f"{self.api_base}/tts?{'&'.join(query_parts)}"
+        data = {
+            "dl_url": self.api_base,
+            "version": self.version,
+            "model_name": self.character,
+            "prompt_text_lang": self.prompt_text_lang,
+            "emotion": self.emotion,
+            "text": text,
+            "text_lang": self.text_lang,
+        }
 
         async with aiohttp.ClientSession() as session:
-            async with session.get(url) as response:
+            async with session.post(url, json=data, headers=headers) as response:
                 if response.status == 200:
-                    with open(path, "wb") as f:
-                        f.write(await response.read())
+                    resp_json = await response.json()
+                    msg = resp_json.get("msg")
+                    audio_url = resp_json.get("audio_url")
+                    if not msg or msg != "合成成功":
+                        raise Exception(f"GSVI TTS API 合成失败: {msg}")
+                    async with session.get(audio_url) as audio_response:
+                        if audio_response.status == 200:
+                            with open(path, "wb") as f:
+                                f.write(await audio_response.read())
+                        else:
+                            error_text = await audio_response.text()
+                            raise Exception(
+                                f"GSVI TTS API 下载音频失败，状态码: {audio_response.status}，错误: {error_text}",
+                            )
                 else:
                     error_text = await response.text()
                     raise Exception(
                         f"GSVI TTS API 请求失败，状态码: {response.status}，错误: {error_text}",
                     )
 
-        return path
+        return str(path)