diff --git a/public/index.html b/public/index.html
index a5f7041f7..8e3beaef8 100644
--- a/public/index.html
+++ b/public/index.html
@@ -2867,6 +2867,10 @@
                                         <option value="o3-mini">o3-mini</option>
                                         <option value="o3-mini-2025-01-31">o3-mini-2025-01-31</option>
                                     </optgroup>
+                                    <optgroup label="GPT-4.5">
+                                        <option value="gpt-4.5-preview">gpt-4.5-preview</option>
+                                        <option value="gpt-4.5-preview-2025-02-27">gpt-4.5-preview-2025-02-27</option>
+                                    </optgroup>
                                     <optgroup label="GPT-4 Turbo and GPT-4">
                                         <option value="gpt-4-turbo">gpt-4-turbo</option>
                                         <option value="gpt-4-turbo-2024-04-09">gpt-4-turbo-2024-04-09</option>
diff --git a/public/scripts/openai.js b/public/scripts/openai.js
index 2e87100e8..040b14dcd 100644
--- a/public/scripts/openai.js
+++ b/public/scripts/openai.js
@@ -1945,7 +1945,7 @@ async function sendOpenAIRequest(type, messages, signal) {
     }
 
     // Remove logit bias, logprobs and stop strings if it's not supported by the model
-    if (isOAI && oai_settings.openai_model.includes('vision') || isOpenRouter && oai_settings.openrouter_model.includes('vision')) {
+    if (isOAI && oai_settings.openai_model.includes('vision') || isOpenRouter && oai_settings.openrouter_model.includes('vision') || isOAI && oai_settings.openai_model.includes('gpt-4.5-preview')) {
         delete generate_data.logit_bias;
         delete generate_data.stop;
         delete generate_data.logprobs;
@@ -4997,6 +4997,8 @@ export function isImageInliningSupported() {
         'gpt-4-turbo',
         'gpt-4o',
         'gpt-4o-mini',
+        'gpt-4.5-preview',
+        'gpt-4.5-preview-2025-02-27',
         'o1',
         'o1-2024-12-17',
         'chatgpt-4o-latest',
diff --git a/public/scripts/reasoning.js b/public/scripts/reasoning.js
index d475ca3f9..274a7a654 100644
--- a/public/scripts/reasoning.js
+++ b/public/scripts/reasoning.js
@@ -108,6 +108,7 @@ export function isHiddenReasoningModel() {
 
     /** @type {{ name: string; func: MatchingFunc; }[]} */
     const hiddenReasoningModels = [
+        { name: 'gpt-4.5', func: FUNCS.startsWith },
         { name: 'o1', func: FUNCS.startsWith },
         { name: 'o3', func: FUNCS.startsWith },
         { name: 'gemini-2.0-flash-thinking-exp', func: FUNCS.startsWith },
diff --git a/src/endpoints/tokenizers.js b/src/endpoints/tokenizers.js
index f746d2e78..7ca652086 100644
--- a/src/endpoints/tokenizers.js
+++ b/src/endpoints/tokenizers.js
@@ -410,6 +410,10 @@ export function getTokenizerModel(requestModel) {
         return 'gpt-4o';
     }
 
+    if (requestModel.includes('gpt-4.5-preview')) {
+        return 'gpt-4o';
+    }
+
     if (requestModel.includes('gpt-4-32k')) {
         return 'gpt-4-32k';
     }