diff --git a/.env.example b/.env.example
index 1df483a..bc67919 100644
--- a/.env.example
+++ b/.env.example
@@ -1,4 +1,5 @@
 PORT=3001
 OPENAI_API_KEY=
 SIMILARITY_MEASURE=cosine # cosine or dot
-SEARXNG_API_URL= # no need to fill this if using docker
\ No newline at end of file
+SEARXNG_API_URL= # no need to fill this if using docker
+MODEL_NAME=gpt-3.5-turbo
\ No newline at end of file
diff --git a/src/agents/academicSearchAgent.ts b/src/agents/academicSearchAgent.ts
index 94e1801..7c3d448 100644
--- a/src/agents/academicSearchAgent.ts
+++ b/src/agents/academicSearchAgent.ts
@@ -19,13 +19,13 @@ import eventEmitter from 'events';
 import computeSimilarity from '../utils/computeSimilarity';
 
 const chatLLM = new ChatOpenAI({
-  modelName: 'gpt-3.5-turbo',
+  modelName: process.env.MODEL_NAME,
   temperature: 0.7,
 });
 
 const llm = new OpenAI({
   temperature: 0,
-  modelName: 'gpt-3.5-turbo',
+  modelName: process.env.MODEL_NAME,
 });
 
 const embeddings = new OpenAIEmbeddings({
diff --git a/src/agents/imageSearchAgent.ts b/src/agents/imageSearchAgent.ts
index 37ac186..3a2c9db 100644
--- a/src/agents/imageSearchAgent.ts
+++ b/src/agents/imageSearchAgent.ts
@@ -12,7 +12,7 @@ import { searchSearxng } from '../core/searxng';
 
 const llm = new OpenAI({
   temperature: 0,
-  modelName: 'gpt-3.5-turbo',
+  modelName: process.env.MODEL_NAME,
 });
 
 const imageSearchChainPrompt = `
diff --git a/src/agents/redditSearchAgent.ts b/src/agents/redditSearchAgent.ts
index d304fcb..77f293e 100644
--- a/src/agents/redditSearchAgent.ts
+++ b/src/agents/redditSearchAgent.ts
@@ -19,13 +19,13 @@ import eventEmitter from 'events';
 import computeSimilarity from '../utils/computeSimilarity';
 
 const chatLLM = new ChatOpenAI({
-  modelName: 'gpt-3.5-turbo',
+  modelName: process.env.MODEL_NAME,
   temperature: 0.7,
 });
 
 const llm = new OpenAI({
   temperature: 0,
-  modelName: 'gpt-3.5-turbo',
+  modelName: process.env.MODEL_NAME,
 });
 
 const embeddings = new OpenAIEmbeddings({
diff --git a/src/agents/webSearchAgent.ts b/src/agents/webSearchAgent.ts
index 3241021..f5799e3 100644
--- a/src/agents/webSearchAgent.ts
+++ b/src/agents/webSearchAgent.ts
@@ -19,13 +19,13 @@ import eventEmitter from 'events';
 import computeSimilarity from '../utils/computeSimilarity';
 
 const chatLLM = new ChatOpenAI({
-  modelName: 'gpt-3.5-turbo',
+  modelName: process.env.MODEL_NAME,
   temperature: 0.7,
 });
 
 const llm = new OpenAI({
   temperature: 0,
-  modelName: 'gpt-3.5-turbo',
+  modelName: process.env.MODEL_NAME,
 });
 
 const embeddings = new OpenAIEmbeddings({
diff --git a/src/agents/wolframAlphaSearchAgent.ts b/src/agents/wolframAlphaSearchAgent.ts
index 672a91c..4f233af 100644
--- a/src/agents/wolframAlphaSearchAgent.ts
+++ b/src/agents/wolframAlphaSearchAgent.ts
@@ -19,13 +19,13 @@ import eventEmitter from 'events';
 import computeSimilarity from '../utils/computeSimilarity';
 
 const chatLLM = new ChatOpenAI({
-  modelName: 'gpt-3.5-turbo',
+  modelName: process.env.MODEL_NAME,
   temperature: 0.7,
 });
 
 const llm = new OpenAI({
   temperature: 0,
-  modelName: 'gpt-3.5-turbo',
+  modelName: process.env.MODEL_NAME,
 });
 
 const embeddings = new OpenAIEmbeddings({
diff --git a/src/agents/writingAssistant.ts b/src/agents/writingAssistant.ts
index 8c2e1b9..2c8d66e 100644
--- a/src/agents/writingAssistant.ts
+++ b/src/agents/writingAssistant.ts
@@ -10,7 +10,7 @@ import type { StreamEvent } from '@langchain/core/tracers/log_stream';
 import eventEmitter from 'events';
 
 const chatLLM = new ChatOpenAI({
-  modelName: 'gpt-3.5-turbo',
+  modelName: process.env.MODEL_NAME,
   temperature: 0.7,
 });
 
diff --git a/src/agents/youtubeSearchAgent.ts b/src/agents/youtubeSearchAgent.ts
index d0745b2..9ab5ed8 100644
--- a/src/agents/youtubeSearchAgent.ts
+++ b/src/agents/youtubeSearchAgent.ts
@@ -19,13 +19,13 @@ import eventEmitter from 'events';
 import computeSimilarity from '../utils/computeSimilarity';
 
 const chatLLM = new ChatOpenAI({
-  modelName: 'gpt-3.5-turbo',
+  modelName: process.env.MODEL_NAME,
   temperature: 0.7,
 });
 
 const llm = new OpenAI({
   temperature: 0,
-  modelName: 'gpt-3.5-turbo',
+  modelName: process.env.MODEL_NAME,
 });
 
 const embeddings = new OpenAIEmbeddings({