Feat: add xAI provider (#8781)

### What problem does this PR solve?

Add xAI provider (experimental feature, requires user feedback).

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

conf/llm_factories.json

@@ -141,6 +141,61 @@
                 }
             ]
         },
+        {
+            "name": "xAI",
+            "logo": "",
+            "tags": "LLM",
+            "status": "1",
+            "llm": [
+                {
+                    "llm_name": "grok-4",
+                    "tags": "LLM,CHAT,256k",
+                    "max_tokens": 256000,
+                    "model_type": "chat",
+                    "is_tools": true
+                },
+                {
+                    "llm_name": "grok-3",
+                    "tags": "LLM,CHAT,130k",
+                    "max_tokens": 131072,
+                    "model_type": "chat",
+                    "is_tools": true
+
+                },
+                {
+                    "llm_name": "grok-3-fast",
+                    "tags": "LLM,CHAT,130k",
+                    "max_tokens": 131072,
+                    "model_type": "chat",
+                    "is_tools": true
+
+                },
+                {
+                    "llm_name": "grok-3-mini",
+                    "tags": "LLM,CHAT,130k",
+                    "max_tokens": 131072,
+                    "model_type": "chat",
+                    "is_tools": true
+
+                },
+                {
+                    "llm_name": "grok-3-mini-mini-fast",
+                    "tags": "LLM,CHAT,130k",
+                    "max_tokens": 131072,
+                    "model_type": "chat",
+                    "is_tools": true
+
+                },
+                {
+                    "llm_name": "grok-2-vision",
+                    "tags": "LLM,CHAT,IMAGE2TEXT,32k",
+                    "max_tokens": 32768,
+                    "model_type": "image2text",
+                    "is_tools": true
+
+                }
+            ]
+        },
         {
             "name": "Tongyi-Qianwen",
             "logo": "",

docs/references/supported_models.mdx

@@ -58,6 +58,7 @@ A complete list of models supported by RAGFlow, which will continue to expand.
 | Voyage AI             |                    | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: |                    |                    |
 | Xinference            | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: |
 | XunFei Spark          | :heavy_check_mark: |                    |                    |                    |                    | :heavy_check_mark: |
+| xAI                   | :heavy_check_mark: |                    |                    | :heavy_check_mark: |                    |                    |
 | Youdao                |                    | :heavy_check_mark: | :heavy_check_mark: |                    |                    |                    |
 | ZHIPU-AI              | :heavy_check_mark: | :heavy_check_mark: |                    | :heavy_check_mark: |                    |                    |
 | 01.AI                 | :heavy_check_mark: |                    |                    |                    |                    |                    |

rag/llm/chat_model.py

@@ -568,6 +568,16 @@ class BaiChuanChat(Base):
         yield total_tokens
 
 
+class xAIChat(Base):
+    _FACTORY_NAME = "xAI"
+
+    def __init__(self, key, model_name="grok-3", base_url=None, **kwargs):
+        if not base_url:
+            base_url = "https://api.x.ai/v1"
+        super().__init__(key, model_name, base_url=base_url, **kwargs)
+        return
+
+
 class QWenChat(Base):
     _FACTORY_NAME = "Tongyi-Qianwen"
 

rag/llm/cv_model.py

@@ -223,6 +223,16 @@ class AzureGptV4(Base):
         return res.choices[0].message.content.strip(), res.usage.total_tokens
 
 
+class xAICV(Base):
+    _FACTORY_NAME = "xAI"
+
+    def __init__(self, key, model_name="grok-3", base_url=None, **kwargs):
+        if not base_url:
+            base_url = "https://api.x.ai/v1"
+        super().__init__(key, model_name, base_url=base_url, **kwargs)
+        return
+
+
 class QWenCV(Base):
     _FACTORY_NAME = "Tongyi-Qianwen"