diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0f0176d..fb6115b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,10 @@ Format based on [Keep a Changelog](https://keepachangelog.com/). Versioning foll
 
 ## [Unreleased]
 
+### Changed
+
+- Default API base is now `https://app.voicethere.io/api/v1` (production). Staging/custom hosts via `VOICETHERE_API_BASE` or `login --api-base`.
+
 ## [0.10.0] - 2026-08-09
 
 ### Added
diff --git a/README.md b/README.md
index 24bf27c..6f2330d 100644
--- a/README.md
+++ b/README.md
@@ -82,7 +82,7 @@ voicethere login --api-key vth_… --user-api-key vthu_…
 voicethere login --api-key "$VOICETHERE_API_KEY" --api-base https://app.voicethere.dev/api/v1
 ```
 
-Default API base: `https://app.voicethere.dev/api/v1`
+Default API base: `https://app.voicethere.io/api/v1`
 
 **Credentials & environment precedence** (env wins over the credentials file):
 
diff --git a/src/lib/api.test.ts b/src/lib/api.test.ts
index ec0b23c..3c4e231 100644
--- a/src/lib/api.test.ts
+++ b/src/lib/api.test.ts
@@ -7,6 +7,7 @@ import {
   DEFAULT_API_BASE,
   getCredentialsPath,
   readCredentials,
+  resolveEffectiveCredentials,
   writeCredentials,
 } from "./config.js";
 import { slugifyName } from "../commands/projects/create.js";
@@ -26,6 +27,7 @@ describe("config", () => {
 
   afterEach(async () => {
     delete process.env.VOICETHERE_CREDENTIALS_PATH;
+    delete process.env.VOICETHERE_API_BASE;
     await rm(tempDir, { recursive: true, force: true });
   });
 
@@ -34,7 +36,23 @@ describe("config", () => {
   });
 
   it("defaults api_base to production URL", () => {
-    expect(DEFAULT_API_BASE).toBe("https://app.voicethere.dev/api/v1");
+    expect(DEFAULT_API_BASE).toBe("https://app.voicethere.io/api/v1");
+  });
+
+  it("VOICETHERE_API_BASE env overrides file and DEFAULT_API_BASE", async () => {
+    await writeCredentials({
+      api_key: "vth_env_override",
+      api_base: "https://file.example.com/api/v1",
+    });
+    process.env.VOICETHERE_API_BASE =
+      "https://app.voicethere.dev/api/v1";
+
+    const effective = await resolveEffectiveCredentials();
+    expect(effective).toMatchObject({
+      api_key: "vth_env_override",
+      api_base: "https://app.voicethere.dev/api/v1",
+      apiBaseFromEnv: true,
+    });
   });
 
   it("writes and reads credentials with mode 0600", async () => {
diff --git a/src/lib/config.ts b/src/lib/config.ts
index abbf331..c0fac38 100644
--- a/src/lib/config.ts
+++ b/src/lib/config.ts
@@ -10,7 +10,7 @@ import {
 import { homedir } from "node:os";
 import { dirname, join } from "node:path";
 
-export const DEFAULT_API_BASE = "https://app.voicethere.dev/api/v1";
+export const DEFAULT_API_BASE = "https://app.voicethere.io/api/v1";
 
 export interface Credentials {
   /**