diff --git a/src/platform/telemetry/providers/cloud/PostHogTelemetryProvider.test.ts b/src/platform/telemetry/providers/cloud/PostHogTelemetryProvider.test.ts
index 2554a19fae..c38f8c5bcb 100644
--- a/src/platform/telemetry/providers/cloud/PostHogTelemetryProvider.test.ts
+++ b/src/platform/telemetry/providers/cloud/PostHogTelemetryProvider.test.ts
@@ -195,6 +195,46 @@ describe('PostHogTelemetryProvider', () => {
     })
   })
 
+  describe('platform axes (client / deployment)', () => {
+    afterEach(() => {
+      delete window.__comfyDesktop2
+    })
+
+    it('registers client=web and deployment=cloud in a plain browser', async () => {
+      createProvider()
+      await vi.dynamicImportSettled()
+
+      expect(hoisted.mockRegister).toHaveBeenCalledWith({
+        client: 'web',
+        deployment: 'cloud'
+      })
+    })
+
+    it('registers client=desktop when the desktop preload bridge is present', async () => {
+      window.__comfyDesktop2 = {
+        isRemote: () => false,
+        Telemetry: { capture: vi.fn() }
+      }
+      createProvider()
+      await vi.dynamicImportSettled()
+
+      expect(hoisted.mockRegister).toHaveBeenCalledWith({
+        client: 'desktop',
+        deployment: 'cloud'
+      })
+    })
+
+    it('registers platform axes before flushing pre-init queued events', async () => {
+      const provider = createProvider()
+      provider.trackSignupOpened()
+      await vi.dynamicImportSettled()
+
+      const registerOrder = hoisted.mockRegister.mock.invocationCallOrder[0]
+      const captureOrder = hoisted.mockCapture.mock.invocationCallOrder[0]
+      expect(registerOrder).toBeLessThan(captureOrder)
+    })
+  })
+
   describe('desktop entry capture', () => {
     function setLocation(search: string): void {
       Object.defineProperty(window.location, 'search', {
@@ -208,12 +248,20 @@ describe('PostHogTelemetryProvider', () => {
       setLocation('')
     })
 
+    // The platform-axes register (client/deployment) always fires, so these
+    // assert no register call carrying desktop-entry attribution props.
+    function desktopEntryRegisterCalls(): unknown[][] {
+      return hoisted.mockRegister.mock.calls.filter(
+        ([props]) => props && 'source_app' in (props as Record<string, unknown>)
+      )
+    }
+
     it('does not register desktop props when utm_source is absent', async () => {
       setLocation('')
       createProvider()
       await vi.dynamicImportSettled()
 
-      expect(hoisted.mockRegister).not.toHaveBeenCalled()
+      expect(desktopEntryRegisterCalls()).toHaveLength(0)
     })
 
     it('does not register desktop props when utm_source is not comfy.desktop', async () => {
@@ -221,7 +269,7 @@ describe('PostHogTelemetryProvider', () => {
       createProvider()
       await vi.dynamicImportSettled()
 
-      expect(hoisted.mockRegister).not.toHaveBeenCalled()
+      expect(desktopEntryRegisterCalls()).toHaveLength(0)
     })
 
     it('registers source_app and desktop_device_id when arriving from desktop', async () => {
diff --git a/src/platform/telemetry/providers/cloud/PostHogTelemetryProvider.ts b/src/platform/telemetry/providers/cloud/PostHogTelemetryProvider.ts
index c7ca40c068..0c70cddbbc 100644
--- a/src/platform/telemetry/providers/cloud/PostHogTelemetryProvider.ts
+++ b/src/platform/telemetry/providers/cloud/PostHogTelemetryProvider.ts
@@ -143,6 +143,9 @@ export class PostHogTelemetryProvider implements TelemetryProvider {
               before_send: createPostHogBeforeSend()
             })
             this.isInitialized = true
+            // Before flushEventQueue so pre-init events also carry the
+            // platform super properties.
+            this.registerPlatformProps()
             this.flushEventQueue()
             this.registerDesktopEntryProps()
 
@@ -285,6 +288,18 @@ export class PostHogTelemetryProvider implements TelemetryProvider {
     )
   }
 
+  private registerPlatformProps(): void {
+    if (!this.posthog) return
+    try {
+      this.posthog.register({
+        client: window.__comfyDesktop2 ? 'desktop' : 'web',
+        deployment: 'cloud'
+      })
+    } catch (error) {
+      console.error('Failed to register platform props:', error)
+    }
+  }
+
   private registerDesktopEntryProps(): void {
     if (!this.posthog) return
     const props = readDesktopEntryProps()