diff --git a/changelog/3701.changed.md b/changelog/3701.changed.md
new file mode 100644
index 000000000..03c0d787e
--- /dev/null
+++ b/changelog/3701.changed.md
@@ -0,0 +1 @@
+- Updated the default model to `async_flash_v1.0` and base URL to `https://api.async.com` for `AsyncAITTSService`.
\ No newline at end of file