diff --git a/Taskfile.yaml b/Taskfile.yaml
index 4a62fa4e52939be69dbf5cfab1fcfb8cc061c26c..9bb3f6ecbc7100bcd547887a105247d282df355b 100644
--- a/Taskfile.yaml
+++ b/Taskfile.yaml
@@ -16,6 +16,11 @@ tasks:
     cmds:
       - go fmt ./...
 
+  test:
+    desc: Run tests
+    cmds:
+      - go test {{.CLI_ARGS}} ./...
+
   modernize:
     desc: Modernize code
     cmds:
diff --git a/internal/providers/providers_test.go b/internal/providers/providers_test.go
new file mode 100644
index 0000000000000000000000000000000000000000..ffaa47744ed1a6453734042d5c954fa5e15912e3
--- /dev/null
+++ b/internal/providers/providers_test.go
@@ -0,0 +1,23 @@
+package providers
+
+import (
+	"slices"
+	"testing"
+)
+
+func TestValidDefaultModels(t *testing.T) {
+	for _, p := range GetAll() {
+		t.Run(p.Name, func(t *testing.T) {
+			var modelIds []string
+			for _, m := range p.Models {
+				modelIds = append(modelIds, m.ID)
+			}
+			if !slices.Contains(modelIds, p.DefaultLargeModelID) {
+				t.Errorf("Default large model %q not found in provider %q", p.DefaultLargeModelID, p.Name)
+			}
+			if !slices.Contains(modelIds, p.DefaultSmallModelID) {
+				t.Errorf("Default small model %q not found in provider %q", p.DefaultSmallModelID, p.Name)
+			}
+		})
+	}
+}