diff --git a/web/app/utils/models.ts b/web/app/utils/models.ts
new file mode 100644
index 0000000..33d1d79
--- /dev/null
+++ b/web/app/utils/models.ts
@@ -0,0 +1,32 @@
+/**
+ * Utility functions for model-related operations
+ */
+
+/**
+ * Checks if a model is an OpenAI model
+ * @param model - The model name to check
+ * @returns true if the model is an OpenAI model
+ */
+export function isOpenAIModel(model: string | null | undefined): boolean {
+  if (!model) return false;
+  return model.startsWith('gpt-') || model.startsWith('o');
+}
+
+/**
+ * Gets the provider name based on the model
+ * @param model - The model name
+ * @returns 'OpenAI' for OpenAI models, 'Anthropic' otherwise
+ */
+export function getProviderName(model: string | null | undefined): 'OpenAI' | 'Anthropic' {
+  return isOpenAIModel(model) ? 'OpenAI' : 'Anthropic';
+}
+
+/**
+ * Gets the appropriate chat completions endpoint based on the model
+ * @param model - The model name
+ * @param defaultEndpoint - The default endpoint to use for non-OpenAI models
+ * @returns The appropriate endpoint
+ */
+export function getChatCompletionsEndpoint(model: string | null | undefined, defaultEndpoint?: string): string {
+  return isOpenAIModel(model) ? '/v1/chat/completions' : (defaultEndpoint || '/v1/messages');
+}
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