diff --git a/ee/app/services/ai/duo_workflows/clean_stuck_workflows_service.rb b/ee/app/services/ai/duo_workflows/clean_stuck_workflows_service.rb
index fc75571babbcdc12256a461c6391ee3c5defd809..5e47876b66ab7a0d93cb5c183a05f22f4f975afb 100644
--- a/ee/app/services/ai/duo_workflows/clean_stuck_workflows_service.rb
+++ b/ee/app/services/ai/duo_workflows/clean_stuck_workflows_service.rb
@@ -22,9 +22,9 @@ def execute
               "cleanup_stuck_agent_platform_session",
               user: w.user,
               project: w.project,
-              name: w.project.namespace,
+              namespace: w.project.namespace,
               additional_properties: {
-                label: "workflow_finish_event",
+                label: w.workflow_definition || "unknown",
                 value: w.id,
                 property: "failed",
                 category: w.workflow_definition
diff --git a/ee/app/services/ai/duo_workflows/start_workflow_service.rb b/ee/app/services/ai/duo_workflows/start_workflow_service.rb
index f148a1729f97b821755820ae748083377417404f..e87ff6e5cf93a49f53cf765076e356253eacb98f 100644
--- a/ee/app/services/ai/duo_workflows/start_workflow_service.rb
+++ b/ee/app/services/ai/duo_workflows/start_workflow_service.rb
@@ -3,6 +3,9 @@
 module Ai
   module DuoWorkflows
     class StartWorkflowService
+      include ::Services::ReturnServiceResponses
+      include ::Gitlab::InternalEventsTracking
+
       IMAGE = 'registry.gitlab.com/gitlab-org/duo-workflow/default-docker-image/workflow-generic-image:v0.0.4'
 
       def initialize(workflow:, params:)
@@ -47,6 +50,10 @@ def execute
         workload = response.payload
         if response.success?
           @workflow.workflows_workloads.create(project_id: project.id, workload_id: workload.id)
+          
+          # Track the start of the agent platform session
+          track_start_agent_platform_session
+          
           ServiceResponse.success(payload: { workload_id: workload.id })
         else
           ServiceResponse.error(message: response.message, reason: :workload_failure)
@@ -121,6 +128,20 @@ def link_composite_identity
         identity = ::Gitlab::Auth::Identity.fabricate(duo_workflow_service_account)
         identity.link!(@current_user) if identity&.composite?
       end
+
+      def track_start_agent_platform_session
+        track_internal_event(
+          "start_agent_platform_session",
+          user: @current_user,
+          project: project,
+          namespace: project.namespace,
+          additional_properties: {
+            label: @workflow.workflow_definition || "unknown",
+            value: @workflow.id,
+            category: @workflow.workflow_definition
+          }
+        )
+      end
     end
   end
 end
diff --git a/ee/config/events/cleanup_stuck_agent_platform_session.yml b/ee/config/events/cleanup_stuck_agent_platform_session.yml
index d7f9c926857b6e2d2e2bb565b486651b04521636..3b27314bb187e631815305e243593af1347f7d1b 100644
--- a/ee/config/events/cleanup_stuck_agent_platform_session.yml
+++ b/ee/config/events/cleanup_stuck_agent_platform_session.yml
@@ -9,7 +9,7 @@ identifiers:
 - namespace
 additional_properties:
   label:
-    description: hardcoded value "workflow_finish_event"
+    description: flow type (e.g. chat, software_development, etc.)
   property:
     description: workflow's new status eg. failed or paused
   value:
diff --git a/ee/config/events/start_agent_platform_session.yml b/ee/config/events/start_agent_platform_session.yml
new file mode 100644
index 0000000000000000000000000000000000000000..6b61fbea56515642384b870f9ff0ca86bbe70909
--- /dev/null
+++ b/ee/config/events/start_agent_platform_session.yml
@@ -0,0 +1,24 @@
+---
+description: Tracks the start of a GitLab Duo Agent platform session (formerly Duo Workflow). Important for Duo Agent Platform analytics
+internal_events: true
+status: active
+action: start_agent_platform_session
+identifiers:
+- project
+- user
+- namespace
+additional_properties:
+  label:
+    description: flow type (e.g. chat, software_development, etc.)
+  value:
+    description: id of the session (still called workflow_id in most places)
+  category:
+    description: workflow definition
+product_group: duo_workflow
+product_categories:
+- duo_workflow
+milestone: '18.3'
+introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/issues/560731
+tiers:
+- premium
+- ultimate
\ No newline at end of file
diff --git a/ee/spec/services/ai/duo_workflows/clean_stuck_workflows_service_spec.rb b/ee/spec/services/ai/duo_workflows/clean_stuck_workflows_service_spec.rb
index 4ac103a693483079e23005f46ea79c4953f3cffc..0796b6c8a3d285dbb66bc1d7ffcfac18c7d26004 100644
--- a/ee/spec/services/ai/duo_workflows/clean_stuck_workflows_service_spec.rb
+++ b/ee/spec/services/ai/duo_workflows/clean_stuck_workflows_service_spec.rb
@@ -43,8 +43,9 @@
                                   .with(category: "Ai::DuoWorkflows::CleanStuckWorkflowsService",
                                     user: workflow.user,
                                     project: workflow.project,
+                                    namespace: workflow.project.namespace,
                                     additional_properties: {
-                                      label: "workflow_finish_event",
+                                      label: workflow.workflow_definition,
                                       value: workflow.id,
                                       property: "failed",
                                       category: workflow.workflow_definition
diff --git a/ee/spec/services/ai/duo_workflows/start_workflow_service_spec.rb b/ee/spec/services/ai/duo_workflows/start_workflow_service_spec.rb
index 523d30768202ce7e864fb516205803e51e63e3f4..efa8414e9b8eceac1af3c2171c57581f69daeb88 100644
--- a/ee/spec/services/ai/duo_workflows/start_workflow_service_spec.rb
+++ b/ee/spec/services/ai/duo_workflows/start_workflow_service_spec.rb
@@ -40,6 +40,19 @@
       expect(workload.branch_name).to start_with('workloads/')
       expect(workload.branch_name).to start_with('workloads/')
     end
+
+    it 'tracks start_agent_platform_session event' do
+      expect { execute }.to trigger_internal_events("start_agent_platform_session")
+                              .with(category: "Ai::DuoWorkflows::StartWorkflowService",
+                                user: workflow.user,
+                                project: workflow.project,
+                                namespace: workflow.project.namespace,
+                                additional_properties: {
+                                  label: workflow.workflow_definition,
+                                  value: workflow.id,
+                                  category: workflow.workflow_definition
+                                })
+    end
   end
 
   shared_examples 'failure' do