diff --git a/backend/windmill-common/src/ai_providers.rs b/backend/windmill-common/src/ai_providers.rs
index b8c1aaf8fe4a1..57a6455b6056c 100644
--- a/backend/windmill-common/src/ai_providers.rs
+++ b/backend/windmill-common/src/ai_providers.rs
@@ -38,6 +38,12 @@ impl AIProvider {
         region: Option<String>,
         db: &DB,
     ) -> Result<String> {
+        // Resource-level base URL should always take precedence over any provider defaults
+        // (including global OpenAI Azure overrides).
+        if let Some(base_url) = resource_base_url {
+            return Ok(base_url);
+        }
+
         match self {
             AIProvider::OpenAI => {
                 // Check for Azure base path override
@@ -71,14 +77,10 @@ impl AIProvider {
             AIProvider::Anthropic => Ok("https://api.anthropic.com/v1".to_string()),
             AIProvider::Mistral => Ok("https://api.mistral.ai/v1".to_string()),
             p @ (AIProvider::CustomAI | AIProvider::AzureOpenAI) => {
-                if let Some(base_url) = resource_base_url {
-                    Ok(base_url)
-                } else {
-                    Err(Error::BadRequest(format!(
-                        "{:?} provider requires a base URL in the resource",
-                        p
-                    )))
-                }
+                Err(Error::BadRequest(format!(
+                    "{:?} provider requires a base URL in the resource",
+                    p
+                )))
             }
             AIProvider::AWSBedrock => Ok(format!(
                 "https://bedrock-runtime.{}.amazonaws.com",