diff --git a/protocol/src/schema/llm/LlmTextModelParams.ts b/protocol/src/schema/llm/LlmTextModelParams.ts
index 793f70c..cbb0074 100644
--- a/protocol/src/schema/llm/LlmTextModelParams.ts
+++ b/protocol/src/schema/llm/LlmTextModelParams.ts
@@ -14,6 +14,7 @@ export interface LlmTextModelParams {
     candidateCount?: number;
     seed?: number;
     stream?: boolean;
+    thinking?: boolean;
 
     // Perplexity-specific parameters
     web_search?: boolean;
@@ -82,6 +83,11 @@ export const LlmTextModelParamsSchema = new Schema<LlmTextModelParams>({
             type: 'boolean',
             optional: true,
         },
+        thinking: {
+            type: 'boolean',
+            optional: true,
+            default: false,
+        },
         // Perplexity-specific parameters
         web_search: {
             type: 'boolean',
diff --git a/src/main/services/llm/AnthropicLlmService.ts b/src/main/services/llm/AnthropicLlmService.ts
index 696ccb2..34bf587 100644
--- a/src/main/services/llm/AnthropicLlmService.ts
+++ b/src/main/services/llm/AnthropicLlmService.ts
@@ -121,6 +121,9 @@ export class AnthropicLlmService extends LlmService {
             stop_sequences: req.params?.stopSequences,
             stream: req.params?.stream,
             system: req.system,
+            thinking: {
+                type: req.params?.thinking ? 'enabled' : 'disabled'
+            }
         };
     }
 
diff --git a/src/main/services/llm/GeminiLlmService.ts b/src/main/services/llm/GeminiLlmService.ts
index 4138718..521d39f 100644
--- a/src/main/services/llm/GeminiLlmService.ts
+++ b/src/main/services/llm/GeminiLlmService.ts
@@ -183,6 +183,9 @@ export class GeminiLlmService extends LlmService {
                 top_p: req.params?.topP,
                 top_k: req.params?.topK,
                 stop_sequences: req.params?.stopSequences,
+                thinkingConfig: {
+                    thinkingBudget: req.params?.thinking ? -1 : 0
+                }
             }
         };
     }
diff --git a/src/main/services/llm/GroqLlmService.ts b/src/main/services/llm/GroqLlmService.ts
index ef484ac..94ff9d6 100644
--- a/src/main/services/llm/GroqLlmService.ts
+++ b/src/main/services/llm/GroqLlmService.ts
@@ -117,6 +117,8 @@ export class GroqLlmService extends LlmService {
             stop: req.params?.stopSequences,
             frequency_penalty: req.params?.frequencyPenalty,
             presence_penalty: req.params?.presencePenalty,
+            reasoning_effort: req.params?.thinking ? 'default' : 'none',
+            reasoning_format: req.params?.thinking ? 'parsed' : 'hidden',
             response_format: req.params?.responseFormat,
             seed: req.params?.seed,
             stream: req.params?.stream
diff --git a/src/main/services/llm/OpenaAiLlmService.ts b/src/main/services/llm/OpenaAiLlmService.ts
index d624421..255c16c 100644
--- a/src/main/services/llm/OpenaAiLlmService.ts
+++ b/src/main/services/llm/OpenaAiLlmService.ts
@@ -165,7 +165,8 @@ export class OpenaAiLlmService extends LlmService {
             logit_bias: req.params?.logitBias,
             response_format: req.params?.responseFormat,
             seed: req.params?.seed,
-            stream: req.params?.stream
+            stream: req.params?.stream,
+            reasoning_effort: req.params?.thinking ? 'medium' : 'minimal'
         };
 
         // Some models use max_completion_tokens, others use max_tokens
diff --git a/src/main/services/llm/XAiLlmService.ts b/src/main/services/llm/XAiLlmService.ts
index a02477b..9b70148 100644
--- a/src/main/services/llm/XAiLlmService.ts
+++ b/src/main/services/llm/XAiLlmService.ts
@@ -134,6 +134,7 @@ export class XAiLlmService extends LlmService {
             stop: req.params?.stopSequences,
             frequency_penalty: req.params?.frequencyPenalty,
             presence_penalty: req.params?.presencePenalty,
+            reasoning_effort: req.params?.thinking ? 'high' : 'low',
             response_format: req.params?.responseFormat,
             seed: req.params?.seed,
             stream: req.params?.stream