diff --git a/changelog.d/fixes/11923-orcarouter-baseurl.md b/changelog.d/fixes/11923-orcarouter-baseurl.md
new file mode 100644
index 0000000000..672ebf26b2
--- /dev/null
+++ b/changelog.d/fixes/11923-orcarouter-baseurl.md
@@ -0,0 +1 @@
+- **fix(providers):** OrcaRouter chat requests now target `/v1/chat/completions` instead of the bare `/v1` API root, fixing the upstream `404 Invalid URL (POST /v1)` ([#11923](https://github.com/diegosouzapw/OmniRoute/pull/11923)).
diff --git a/open-sse/config/providers/registry/orcarouter/index.ts b/open-sse/config/providers/registry/orcarouter/index.ts
index d8d7d5bb59..c6247d9ab7 100644
--- a/open-sse/config/providers/registry/orcarouter/index.ts
+++ b/open-sse/config/providers/registry/orcarouter/index.ts
@@ -13,7 +13,7 @@ export const orcarouterProvider: RegistryEntry = {
   alias: "orcarouter",
   format: "openai",
   executor: "default",
-  baseUrl: "https://api.orcarouter.ai/v1",
+  baseUrl: "https://api.orcarouter.ai/v1/chat/completions",
   authType: "apikey",
   authHeader: "bearer",
   defaultContextLength: 128000,