docs(llms): fix OpenRouter code example — NameError, redundant base_url, add thinking note

docs/ar/concepts/llms.mdx

@@ -1080,17 +1080,20 @@ mode: "wide"
 
     مثال الاستخدام في مشروع CrewAI:
     ```python Code
+    from crewai import LLM
+
     llm = LLM(
         model="openrouter/deepseek/deepseek-r1",
-        base_url="https://openrouter.ai/api/v1",
-        api_key=OPENROUTER_API_KEY
+        # api_key defaults to OPENROUTER_API_KEY env var
+        # base_url defaults to https://openrouter.ai/api/v1
     )
     ```
 
     <Info>
       نماذج Open Router:
       - openrouter/deepseek/deepseek-r1
       - openrouter/deepseek/deepseek-chat
+      - openrouter/anthropic/claude-sonnet-4-5
     </Info>
 
     **ملاحظة:** يستخدم هذا المزود LiteLLM. أضفه كتبعية لمشروعك:

docs/en/concepts/llms.mdx

@@ -1144,17 +1144,32 @@ In this section, you'll find detailed examples that help you select, configure,
 
     Example usage in your CrewAI project:
     ```python Code
+    from crewai import LLM
+
     llm = LLM(
         model="openrouter/deepseek/deepseek-r1",
-        base_url="https://openrouter.ai/api/v1",
-        api_key=OPENROUTER_API_KEY
+        # api_key defaults to OPENROUTER_API_KEY env var
+        # base_url defaults to https://openrouter.ai/api/v1
+    )
+    ```
+
+    Extended thinking is supported for Anthropic models routed via OpenRouter:
+    ```python Code
+    from crewai import LLM
+
+    llm = LLM(
+        model="openrouter/anthropic/claude-sonnet-4-5",
+        thinking={"type": "enabled", "budget_tokens": 5000},
+        max_tokens=10000,
     )
     ```
 
     <Info>
       Open Router models:
       - openrouter/deepseek/deepseek-r1
       - openrouter/deepseek/deepseek-chat
+      - openrouter/anthropic/claude-sonnet-4-5
+      - openrouter/anthropic/claude-opus-4-5
     </Info>
 
     **Note:** This provider uses LiteLLM. Add it as a dependency to your project:

docs/ko/concepts/llms.mdx

@@ -817,17 +817,20 @@ CrewAI는 고유한 기능, 인증 방법, 모델 역량을 제공하는 다양
 
     CrewAI 프로젝트에서의 예시 사용법:
     ```python Code
+    from crewai import LLM
+
     llm = LLM(
         model="openrouter/deepseek/deepseek-r1",
-        base_url="https://openrouter.ai/api/v1",
-        api_key=OPENROUTER_API_KEY
+        # api_key defaults to OPENROUTER_API_KEY env var
+        # base_url defaults to https://openrouter.ai/api/v1
     )
     ```
 
     <Info>
       Open Router 모델:
       - openrouter/deepseek/deepseek-r1
       - openrouter/deepseek/deepseek-chat
+      - openrouter/anthropic/claude-sonnet-4-5
     </Info>
 
     **참고:** 이 제공자는 LiteLLM을 사용합니다. 프로젝트에 의존성으로 추가하세요:

docs/pt-BR/concepts/llms.mdx

@@ -816,17 +816,20 @@ Nesta seção, você encontrará exemplos detalhados que ajudam a selecionar, co
 
     Exemplo de uso em seu projeto CrewAI:
     ```python Code
+    from crewai import LLM
+
     llm = LLM(
         model="openrouter/deepseek/deepseek-r1",
-        base_url="https://openrouter.ai/api/v1",
-        api_key=OPENROUTER_API_KEY
+        # api_key defaults to OPENROUTER_API_KEY env var
+        # base_url defaults to https://openrouter.ai/api/v1
     )
     ```
 
     <Info>
       Modelos do Open Router:
       - openrouter/deepseek/deepseek-r1
       - openrouter/deepseek/deepseek-chat
+      - openrouter/anthropic/claude-sonnet-4-5
     </Info>
 
     **Nota:** Este provedor usa o LiteLLM. Adicione-o como dependência ao seu projeto: