diff --git a/packages/desktop/src-tauri/Cargo.lock b/packages/desktop/src-tauri/Cargo.lock
index 537a7c9c566..c5d3702a946 100644
--- a/packages/desktop/src-tauri/Cargo.lock
+++ b/packages/desktop/src-tauri/Cargo.lock
@@ -2256,9 +2256,9 @@ checksum = "8eaf4bc02d17cbdd7ff4c7438cafcdf7fb9a4613313ad11b4f8fefe7d3fa0130"
 
 [[package]]
 name = "js-sys"
-version = "0.3.82"
+version = "0.3.85"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b011eec8cc36da2aab2d5cff675ec18454fad408585853910a202391cf9f8e65"
+checksum = "8c942ebf8e95485ca0d52d97da7c5a2c387d0e7f0ba4c35e93bfcaee045955b3"
 dependencies = [
  "once_cell",
  "wasm-bindgen",
@@ -3958,16 +3958,16 @@ dependencies = [
  "url",
  "wasm-bindgen",
  "wasm-bindgen-futures",
- "wasm-streams",
+ "wasm-streams 0.4.2",
  "web-sys",
  "webpki-roots",
 ]
 
 [[package]]
 name = "reqwest"
-version = "0.13.1"
+version = "0.13.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "04e9018c9d814e5f30cc16a0f03271aeab3571e609612d9fe78c1aa8d11c2f62"
+checksum = "ab3f43e3283ab1488b624b44b0e988d0acea0b3214e694730a055cb6b2efa801"
 dependencies = [
  "base64 0.22.1",
  "bytes",
@@ -3993,7 +3993,7 @@ dependencies = [
  "url",
  "wasm-bindgen",
  "wasm-bindgen-futures",
- "wasm-streams",
+ "wasm-streams 0.5.0",
  "web-sys",
 ]
 
@@ -4827,7 +4827,7 @@ dependencies = [
  "percent-encoding",
  "plist",
  "raw-window-handle",
- "reqwest 0.13.1",
+ "reqwest 0.13.2",
  "serde",
  "serde_json",
  "serde_repr",
@@ -6038,9 +6038,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen"
-version = "0.2.105"
+version = "0.2.108"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "da95793dfc411fbbd93f5be7715b0578ec61fe87cb1a42b12eb625caa5c5ea60"
+checksum = "64024a30ec1e37399cf85a7ffefebdb72205ca1c972291c51512360d90bd8566"
 dependencies = [
  "cfg-if",
  "once_cell",
@@ -6051,11 +6051,12 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-futures"
-version = "0.4.55"
+version = "0.4.58"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "551f88106c6d5e7ccc7cd9a16f312dd3b5d36ea8b4954304657d5dfba115d4a0"
+checksum = "70a6e77fd0ae8029c9ea0063f87c46fde723e7d887703d74ad2616d792e51e6f"
 dependencies = [
  "cfg-if",
+ "futures-util",
  "js-sys",
  "once_cell",
  "wasm-bindgen",
@@ -6064,9 +6065,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-macro"
-version = "0.2.105"
+version = "0.2.108"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "04264334509e04a7bf8690f2384ef5265f05143a4bff3889ab7a3269adab59c2"
+checksum = "008b239d9c740232e71bd39e8ef6429d27097518b6b30bdf9086833bd5b6d608"
 dependencies = [
  "quote",
  "wasm-bindgen-macro-support",
@@ -6074,9 +6075,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-macro-support"
-version = "0.2.105"
+version = "0.2.108"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "420bc339d9f322e562942d52e115d57e950d12d88983a14c79b86859ee6c7ebc"
+checksum = "5256bae2d58f54820e6490f9839c49780dff84c65aeab9e772f15d5f0e913a55"
 dependencies = [
  "bumpalo",
  "proc-macro2",
@@ -6087,9 +6088,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-shared"
-version = "0.2.105"
+version = "0.2.108"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "76f218a38c84bcb33c25ec7059b07847d465ce0e0a76b995e134a45adcb6af76"
+checksum = "1f01b580c9ac74c8d8f0c0e4afb04eeef2acf145458e52c03845ee9cd23e3d12"
 dependencies = [
  "unicode-ident",
 ]
@@ -6107,6 +6108,19 @@ dependencies = [
  "web-sys",
 ]
 
+[[package]]
+name = "wasm-streams"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9d1ec4f6517c9e11ae630e200b2b65d193279042e28edd4a2cda233e46670bbb"
+dependencies = [
+ "futures-util",
+ "js-sys",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "web-sys",
+]
+
 [[package]]
 name = "wayland-backend"
 version = "0.3.11"
@@ -6182,9 +6196,9 @@ dependencies = [
 
 [[package]]
 name = "web-sys"
-version = "0.3.82"
+version = "0.3.85"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3a1f95c0d03a47f4ae1f7a64643a6bb97465d9b740f0fa8f90ea33915c99a9a1"
+checksum = "312e32e551d92129218ea9a2452120f4aabc03529ef03e4d0d82fb2780608598"
 dependencies = [
  "js-sys",
  "wasm-bindgen",
diff --git a/packages/opencode/src/cli/cmd/tui/app.tsx b/packages/opencode/src/cli/cmd/tui/app.tsx
index 0d5aefe7bc3..65064b40045 100644
--- a/packages/opencode/src/cli/cmd/tui/app.tsx
+++ b/packages/opencode/src/cli/cmd/tui/app.tsx
@@ -107,6 +107,7 @@ export function tui(input: {
   headers?: RequestInit["headers"]
   events?: EventSource
   onExit?: () => Promise<void>
+  onOpenWebUI?: () => Promise<string>
 }) {
   // promise to prevent immediate exit
   return new Promise<void>(async (resolve) => {
@@ -133,6 +134,7 @@ export function tui(input: {
                         fetch={input.fetch}
                         headers={input.headers}
                         events={input.events}
+                        onOpenWebUI={input.onOpenWebUI}
                       >
                         <SyncProvider>
                           <ThemeProvider mode={mode}>
@@ -536,6 +538,24 @@ function App() {
         renderer.toggleDebugOverlay()
         dialog.clear()
       },
+    },
+        {
+      title: "Open WebUI",
+      value: "webui.open",
+      onSelect: async () => {
+        try {
+          const urlToOpen = sdk.onOpenWebUI ? await sdk.onOpenWebUI() : sdk.url
+          await open(urlToOpen)
+        } catch (error) {
+          toast.show({
+            variant: "error",
+            message: "Failed to open WebUI",
+            duration: 3000,
+          })
+        }
+        dialog.clear()
+      },
+      category: "System",
     },
     {
       title: "Toggle console",
diff --git a/packages/opencode/src/cli/cmd/tui/context/sdk.tsx b/packages/opencode/src/cli/cmd/tui/context/sdk.tsx
index 7fa7e05c3d2..bfe11902536 100644
--- a/packages/opencode/src/cli/cmd/tui/context/sdk.tsx
+++ b/packages/opencode/src/cli/cmd/tui/context/sdk.tsx
@@ -15,6 +15,7 @@ export const { use: useSDK, provider: SDKProvider } = createSimpleContext({
     fetch?: typeof fetch
     headers?: RequestInit["headers"]
     events?: EventSource
+    onOpenWebUI?: () => Promise<string>
   }) => {
     const abort = new AbortController()
     const sdk = createOpencodeClient({
@@ -96,6 +97,6 @@ export const { use: useSDK, provider: SDKProvider } = createSimpleContext({
       if (timer) clearTimeout(timer)
     })
 
-    return { client: sdk, event: emitter, url: props.url }
+    return { client: sdk, event: emitter, url: props.url, onOpenWebUI: props.onOpenWebUI }
   },
 })
diff --git a/packages/opencode/src/cli/cmd/tui/thread.ts b/packages/opencode/src/cli/cmd/tui/thread.ts
index 2ea49ff6b2b..7ce270feea8 100644
--- a/packages/opencode/src/cli/cmd/tui/thread.ts
+++ b/packages/opencode/src/cli/cmd/tui/thread.ts
@@ -164,6 +164,17 @@ export const TuiThreadCommand = cmd({
       onExit: async () => {
         await client.call("shutdown", undefined)
       },
+      onOpenWebUI: async () => {
+        if (shouldStartServer) {
+          // Server already running, return the URL
+          return url
+        } else {
+          // Start server on demand using default network options (localhost)
+          const defaultOpts = await resolveNetworkOptions({ port: 0, hostname: "127.0.0.1", mdns: false, "mdns-domain": "opencode.local", cors: [] })
+          const server = await client.call("server", defaultOpts)
+          return server.url
+        }
+      },
     })
 
     setTimeout(() => {