diff --git a/README.md b/README.md
index 6c96084..d1498b6 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@ Official command-line interface for [Linkup](https://linkup.so) — AI-powered w
 
 ## Features
 
-- **Search the web** with three depth modes: `fast`, `standard`, and `deep`.
+- **Search the web** with four depth modes: `flash`, `fast`, `standard`, and `deep`.
 - **Fetch** any URL as clean markdown.
 - **Research** asynchronously, and batch mixed jobs with **tasks**.
 - **Scriptable**: `--json` output for any command, plus stdin and file input.
@@ -50,7 +50,7 @@ These commands run immediately and return the result in the same call.
 
 Run an immediate web search.
 
-- Pick the effort with `--depth`: `fast`, `standard` (default), or `deep`.
+- Pick the effort with `--depth`: `flash`, `fast`, `standard` (default), or `deep`.
 - Choose the output with `--output`: `sourced-answer`, `search-results`, or `structured`.
 - Use `--include-images` and `--max-results` with any output type.
 - Add `--include-inline-citations` to sourced answers or `--include-sources` to structured output.
diff --git a/package-lock.json b/package-lock.json
index 4864d17..c8601b7 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11,7 +11,7 @@
       "dependencies": {
         "@inquirer/prompts": "^8.5.2",
         "commander": "^13.1.0",
-        "linkup-sdk": "^3.6.0",
+        "linkup-sdk": "^3.7.0",
         "open": "^11.0.0"
       },
       "bin": {
@@ -5289,9 +5289,9 @@
       "license": "MIT"
     },
     "node_modules/linkup-sdk": {
-      "version": "3.6.0",
-      "resolved": "https://registry.npmjs.org/linkup-sdk/-/linkup-sdk-3.6.0.tgz",
-      "integrity": "sha512-nExHSOUDCTFRZPYZSgS8vwC8gNDo+frckIbPZCuFmzLcjKeSvbFIP2GMDoauAw6KRvTkd/f3RvCmDutjF1unHw==",
+      "version": "3.7.0",
+      "resolved": "https://registry.npmjs.org/linkup-sdk/-/linkup-sdk-3.7.0.tgz",
+      "integrity": "sha512-8IN9GNpRVz1Mw8e9id1GRHNPfsQ0wiCsHXxljots3QTjoVrJyRLRSu2ju2hdec1xpNRrEfLB/JOls6adNuWaFQ==",
       "license": "MIT",
       "dependencies": {
         "@x402/core": "^2.6.0",
diff --git a/package.json b/package.json
index f86b290..e1aa9c5 100644
--- a/package.json
+++ b/package.json
@@ -45,7 +45,7 @@
   "dependencies": {
     "@inquirer/prompts": "^8.5.2",
     "commander": "^13.1.0",
-    "linkup-sdk": "^3.6.0",
+    "linkup-sdk": "^3.7.0",
     "open": "^11.0.0"
   },
   "devDependencies": {
diff --git a/src/__tests__/search.integration.test.ts b/src/__tests__/search.integration.test.ts
index 71f90b2..e88f9ec 100644
--- a/src/__tests__/search.integration.test.ts
+++ b/src/__tests__/search.integration.test.ts
@@ -20,7 +20,7 @@ describe('search command integration', () => {
       'search',
       'hello world',
       '--depth',
-      'deep',
+      'flash',
       '--include-images',
       '--include-inline-citations',
       '--max-results',
@@ -28,7 +28,7 @@ describe('search command integration', () => {
     ]);
 
     expect(fakeClient.search).toHaveBeenCalledWith({
-      depth: 'deep',
+      depth: 'flash',
       includeImages: true,
       includeInlineCitations: true,
       maxResults: 8,
diff --git a/src/commands/search.ts b/src/commands/search.ts
index 032b6b4..86d2b59 100644
--- a/src/commands/search.ts
+++ b/src/commands/search.ts
@@ -41,7 +41,7 @@ type BuildSearchParamsResult = {
   warnings: string[];
 };
 
-const DEPTH_CHOICES: SearchDepth[] = ['fast', 'standard', 'deep'];
+const DEPTH_CHOICES: SearchDepth[] = ['flash', 'fast', 'standard', 'deep'];
 const OUTPUT_CHOICES: SearchCliOutputType[] = ['sourced-answer', 'search-results', 'structured'];
 
 const OUTPUT_TYPE_MAP: Record<SearchCliOutputType, SearchOutputType> = {