Extends #445 to other providers which many provides deepseek

src/engine/openAi.ts

@@ -45,8 +45,13 @@ export class OpenAiEngine implements AiEngine {
       const completion = await this.client.chat.completions.create(params);
 
       const message = completion.choices[0].message;
+      let content = message?.content;
 
-      return message?.content;
+      if (content && content.includes('<think>')) {
+        return content.replace(/<think>[\s\S]*?<\/think>/g, '').trim();
+      }
+
+      return content;
     } catch (error) {
       const err = error as Error;
       if (