diff --git a/src/lib/models/types.ts b/src/lib/models/types.ts
index fdd5df2..ce77d3b 100644
--- a/src/lib/models/types.ts
+++ b/src/lib/models/types.ts
@@ -1,3 +1,5 @@
+import z from 'zod';
+
 type Model = {
   name: string;
   key: string;
@@ -25,10 +27,59 @@ type ModelWithProvider = {
   providerId: string;
 };
 
+type GenerateOptions = {
+  temperature?: number;
+  maxTokens?: number;
+  topP?: number;
+  stopSequences?: string[];
+  frequencyPenalty?: number;
+  presencePenalty?: number;
+};
+
+type GenerateTextInput = {
+  messages: Message[];
+  options?: GenerateOptions;
+};
+
+type GenerateTextOutput = {
+  content: string;
+  additionalInfo?: Record<string, any>;
+};
+
+type StreamTextOutput = {
+  contentChunk: string;
+  additionalInfo?: Record<string, any>;
+  done?: boolean;
+};
+
+type GenerateObjectInput = {
+  schema: z.ZodTypeAny;
+  messages: Message[];
+  options?: GenerateOptions;
+};
+
+type GenerateObjectOutput<T> = {
+  object: T;
+  additionalInfo?: Record<string, any>;
+};
+
+type StreamObjectOutput<T> = {
+  objectChunk: Partial<T>;
+  additionalInfo?: Record<string, any>;
+  done?: boolean;
+};
+
 export type {
   Model,
   ModelList,
   ProviderMetadata,
   MinimalProvider,
   ModelWithProvider,
+  GenerateOptions,
+  GenerateTextInput,
+  GenerateTextOutput,
+  StreamTextOutput,
+  GenerateObjectInput,
+  GenerateObjectOutput,
+  StreamObjectOutput,
 };
diff --git a/src/lib/types.ts b/src/lib/types.ts
index f7a9ac9..3dcb0d6 100644
--- a/src/lib/types.ts
+++ b/src/lib/types.ts
@@ -1,9 +1,9 @@
 type Message = {
-    role: 'user' | 'assistant' | 'system';
-    content: string;
-}
+  role: 'user' | 'assistant' | 'system';
+  content: string;
+};
 
 type Chunk = {
-    content: string;
-    metadata: Record<string, any>;
-}
\ No newline at end of file
+  content: string;
+  metadata: Record<string, any>;
+};