diff --git a/src/config.ts b/src/config.ts
index 9683fe3..669ee8d 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -1,3 +1,7 @@
+// Specify system prompt
+// Only required for 'chat' type model
+export const SYSTEM_PROMPT = "You are a professional writer. Completion the given story/writting based on user prompt. Answer only with the story/writting and nothing else. DO NOT REPEAT THE USER PROMPT IN THE STORY/WRITTING. DO NOT INLCUDE CONTENT SUCH as \"sure, here is the story\" or any similar response. At every beginning of paragraph, include a newline character";
+
 // This value is the default for a local llama.cpp server.
 // Change as needed if you use another provider.
 export const BASE_URL = "http://localhost:8080/v1/";
@@ -9,13 +13,72 @@ export const API_KEY = "";
 // so it is usually not necessary to change this value.
 export const MAX_TOKENS = 500;
 
+// Specify the model name used by the API. 
+// Update this value if a different model is required.
+export const MODEL = "llama3-70b-8192";
+
+// Specify the model type: 'chat' or 'completion'
+// - 'chat': Most models, including GPT-4 Turbo, use this type
+// - 'completion': Non-chat models, like GPT-3.5-Turbo-Instruct
+export const MODEL_TYPE = "completion";
+
 // Add generation/sampling parameters here. Their effect depends on the API provider.
 // No attempt is made to normalize these parameters across different providers.
 // They are passed to the API endpoint unmodified.
 export const PARAMS = {
-    temperature: 1.0,
-    top_k: 0,
-    top_p: 1.0,
-    min_p: 0.02,
-    repeat_penalty: 1.0,
+   temperature: 1.0,
+   top_k: 0,
+   top_p: 1.0,
+   min_p: 0.02,
+   repeat_penalty: 1.0,
 };
+
+
+//Example - local model (model type: 'completion')
+
+// export const BASE_URL = "http://localhost:8080/v1/";
+// export const MODEL_TYPE = "chat";
+// export const MODEL = "llama3-70b-8192";
+// export const API_KEY = "";
+// export const MAX_TOKENS = 500;
+// export const PARAMS = {
+//     temperature: 1.0,
+//     top_k: 0,
+//     top_p: 1.0,
+//     min_p: 0.02,
+//     repeat_penalty: 1.0,
+// };
+
+
+//Example - OpenAI, gpt-3.5-turbo-instruct (model type: 'completion')
+
+// export const BASE_URL = "https://api.openai.com/v1";
+// export const MODEL_TYPE = "completion";
+// export const MODEL = "gpt-3.5-turbo-instruct";
+// export const API_KEY = "<your OpenAI API Key>";
+// export const MAX_TOKENS = 500;
+// export const PARAMS = {
+    // temperature: 1.0,
+    // top_k: 0,
+    // top_p: 1.0,
+    // min_p: 0.02,
+    // repeat_penalty: 1.0,
+// };
+
+//Example - Groq API, llama-70b (model type: 'chat')
+
+// export const BASE_URL = "https://api.groq.com/openai/v1/";
+// export const API_KEY = "<your groq api key here>";
+// export const MAX_TOKENS = 500;
+// export const MODEL = "llama3-70b-8192";
+// export const MODEL_TYPE = "chat";
+// export const PARAMS = {
+    // temperature: 1.0,
+    // top_k: 0,
+    // top_p: 1.0,
+    // min_p: 0.02,
+    // repeat_penalty: 1.0,
+// };
+
+
+
diff --git a/src/main.ts b/src/main.ts
index c857f51..ce58be5 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -11,7 +11,7 @@ import scrollIntoView from "scroll-into-view-if-needed";
 
 import ParagraphClipboard from "./clipboard.ts";
 import SplitEmbed from "./embed.ts";
-import { BASE_URL, API_KEY, MAX_TOKENS, PARAMS } from "./config.ts";
+import { BASE_URL, API_KEY, MAX_TOKENS, PARAMS, MODEL, MODEL_TYPE, SYSTEM_PROMPT } from "./config.ts";
 
 enum State {
     Editing,
@@ -41,23 +41,34 @@ function scrollEmbedIntoView() {
 }
 
 async function streamText(prompt: string, pane: Element): Promise<string> {
-    const params: OpenAI.CompletionCreateParamsStreaming = {
-        stream: true,
-        // This parameter is ignored by most OpenAI-compatible local API providers.
-        model: "gpt-3.5-turbo-instruct",
-        prompt: prompt,
-        max_tokens: MAX_TOKENS,
-        // @ts-ignore: llama.cpp
-        n_predict: MAX_TOKENS,
-        // @ts-ignore: llama.cpp
-        cache_prompt: true,
-        ...PARAMS,
-    };
-
-    const controller = new AbortController();
-    controllers.push(controller);
-
-    const stream = await client.completions.create(params, { signal: controller.signal });
+    let params: any;
+    let stream: any;
+
+    if (MODEL_TYPE === "chat") {
+        params = {
+            stream: true,
+            model: MODEL,
+            messages: [{role: "system", "content": SYSTEM_PROMPT}, {role: "user", content: prompt }],
+            max_tokens: MAX_TOKENS
+        };
+        const controller = new AbortController();
+        controllers.push(controller);
+        stream = await client.chat.completions.create(params, { signal: controller.signal });
+    } else {
+        params = {
+            stream: true,
+            model: MODEL,
+            prompt: prompt,
+            max_tokens: MAX_TOKENS
+            // @ts-ignore: llama.cpp
+            // n_predict: MAX_TOKENS,
+            // @ts-ignore: llama.cpp
+            // cache_prompt: true
+        };
+        const controller = new AbortController();
+        controllers.push(controller);
+        stream = await client.completions.create(params, { signal: controller.signal });
+    }
 
     let text = "";
     let startFound = false;
@@ -65,7 +76,9 @@ async function streamText(prompt: string, pane: Element): Promise<string> {
 
     for await (const chunk of stream) {
         let newText: string;
-        if (chunk.hasOwnProperty("choices")) {
+        if (MODEL_TYPE === "chat") {
+            newText = chunk.choices[0]?.delta?.content || "";
+        } else if (chunk.hasOwnProperty("choices")) {
             newText = chunk.choices[0].text;
         } else {
             // @ts-ignore: llama.cpp