diff --git a/crates/goose/src/providers/formats/gcpvertexai.rs b/crates/goose/src/providers/formats/gcpvertexai.rs
index b4c57e56ba9c..5bc94841c7dd 100644
--- a/crates/goose/src/providers/formats/gcpvertexai.rs
+++ b/crates/goose/src/providers/formats/gcpvertexai.rs
@@ -81,6 +81,8 @@ pub enum ClaudeVersion {
     Sonnet37,
     /// Claude 3.5 Haiku
     Haiku35,
+    /// Claude Sonnet 4
+    Sonnet4,
     /// Generic Claude model for custom or new versions
     Generic(String),
 }
@@ -108,6 +110,7 @@ impl fmt::Display for GcpVertexAIModel {
                 ClaudeVersion::Sonnet35V2 => "claude-3-5-sonnet-v2@20241022",
                 ClaudeVersion::Sonnet37 => "claude-3-7-sonnet@20250219",
                 ClaudeVersion::Haiku35 => "claude-3-5-haiku@20241022",
+                ClaudeVersion::Sonnet4 => "claude-sonnet-4@20250514",
                 ClaudeVersion::Generic(name) => name,
             },
             Self::Gemini(version) => match version {
@@ -125,7 +128,7 @@ impl fmt::Display for GcpVertexAIModel {
 impl GcpVertexAIModel {
     /// Returns the default GCP location for the model.
     ///
-    /// Each model family has a well-known location:
+    /// Each model family has a well-known location based on availability:
     /// - Claude models default to Ohio (us-east5)
     /// - Gemini models default to Iowa (us-central1)
     pub fn known_location(&self) -> GcpLocation {
@@ -146,6 +149,7 @@ impl TryFrom<&str> for GcpVertexAIModel {
             "claude-3-5-sonnet-v2@20241022" => Ok(Self::Claude(ClaudeVersion::Sonnet35V2)),
             "claude-3-7-sonnet@20250219" => Ok(Self::Claude(ClaudeVersion::Sonnet37)),
             "claude-3-5-haiku@20241022" => Ok(Self::Claude(ClaudeVersion::Haiku35)),
+            "claude-sonnet-4@20250514" => Ok(Self::Claude(ClaudeVersion::Sonnet4)),
             "gemini-1.5-pro-002" => Ok(Self::Gemini(GeminiVersion::Pro15)),
             "gemini-2.0-flash-001" => Ok(Self::Gemini(GeminiVersion::Flash20)),
             "gemini-2.0-pro-exp-02-05" => Ok(Self::Gemini(GeminiVersion::Pro20Exp)),
@@ -340,6 +344,7 @@ mod tests {
             "claude-3-5-sonnet-v2@20241022",
             "claude-3-7-sonnet@20250219",
             "claude-3-5-haiku@20241022",
+            "claude-sonnet-4@20250514",
             "gemini-1.5-pro-002",
             "gemini-2.0-flash-001",
             "gemini-2.0-pro-exp-02-05",
@@ -362,6 +367,7 @@ mod tests {
             ("claude-3-5-sonnet-v2@20241022", GcpLocation::Ohio),
             ("claude-3-7-sonnet@20250219", GcpLocation::Ohio),
             ("claude-3-5-haiku@20241022", GcpLocation::Ohio),
+            ("claude-sonnet-4@20250514", GcpLocation::Ohio),
             ("gemini-1.5-pro-002", GcpLocation::Iowa),
             ("gemini-2.0-flash-001", GcpLocation::Iowa),
             ("gemini-2.0-pro-exp-02-05", GcpLocation::Iowa),
diff --git a/crates/goose/src/providers/gcpvertexai.rs b/crates/goose/src/providers/gcpvertexai.rs
index f0b6d6ef5b70..afec862d66a8 100644
--- a/crates/goose/src/providers/gcpvertexai.rs
+++ b/crates/goose/src/providers/gcpvertexai.rs
@@ -430,6 +430,7 @@ impl Provider for GcpVertexAIProvider {
             GcpVertexAIModel::Claude(ClaudeVersion::Sonnet35V2),
             GcpVertexAIModel::Claude(ClaudeVersion::Sonnet37),
             GcpVertexAIModel::Claude(ClaudeVersion::Haiku35),
+            GcpVertexAIModel::Claude(ClaudeVersion::Sonnet4),
             GcpVertexAIModel::Gemini(GeminiVersion::Pro15),
             GcpVertexAIModel::Gemini(GeminiVersion::Flash20),
             GcpVertexAIModel::Gemini(GeminiVersion::Pro20Exp),
diff --git a/ui/desktop/src/components/settings/models/GooseModels.tsx b/ui/desktop/src/components/settings/models/GooseModels.tsx
index 2b73dc4d7f46..4badf402839a 100644
--- a/ui/desktop/src/components/settings/models/GooseModels.tsx
+++ b/ui/desktop/src/components/settings/models/GooseModels.tsx
@@ -25,8 +25,9 @@ export const gooseModels: Model[] = [
   { id: 22, name: 'claude-3-5-sonnet-v2@20241022', provider: 'GCP Vertex AI' },
   { id: 23, name: 'claude-3-5-sonnet@20240620', provider: 'GCP Vertex AI' },
   { id: 24, name: 'claude-3-5-haiku@20241022', provider: 'GCP Vertex AI' },
-  { id: 25, name: 'gemini-2.0-pro-exp-02-05', provider: 'GCP Vertex AI' },
-  { id: 26, name: 'gemini-2.0-flash-001', provider: 'GCP Vertex AI' },
-  { id: 27, name: 'gemini-1.5-pro-002', provider: 'GCP Vertex AI' },
-  { id: 28, name: 'gemini-2.5-pro-exp-03-25', provider: 'GCP Vertex AI' },
+  { id: 25, name: 'claude-sonnet-4@20250514', provider: 'GCP Vertex AI' },
+  { id: 26, name: 'gemini-2.0-pro-exp-02-05', provider: 'GCP Vertex AI' },
+  { id: 27, name: 'gemini-2.0-flash-001', provider: 'GCP Vertex AI' },
+  { id: 28, name: 'gemini-1.5-pro-002', provider: 'GCP Vertex AI' },
+  { id: 29, name: 'gemini-2.5-pro-exp-03-25', provider: 'GCP Vertex AI' },
 ];