diff --git a/cmd/prometheus/kubecon_demo_test.go b/cmd/prometheus/kubecon_demo_test.go
index b53e6e4ac3..4e7f0954ae 100644
--- a/cmd/prometheus/kubecon_demo_test.go
+++ b/cmd/prometheus/kubecon_demo_test.go
@@ -1,3 +1,5 @@
+//go:build demo
+
 package main
 
 import (
@@ -10,6 +12,14 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
+// Demo for https://sched.co/2EF4F
+// Recommended way:
+//
+//   - Start Prom:
+//     go test -tags demo -run "TestMain_PromQLCompatDemo/normal" ./cmd/prometheus/... # Will run forever and open 3 browser tabs (localhost:1234)
+//
+//   - In another terminal, start Prom with compatibility flag on:
+//     go test -tags demo -run "TestMain_PromQLCompatDemo/compatibility" ./cmd/prometheus/...  # Will run forever and open 3 browser tabs (localhost:1235)
 func TestMain_PromQLCompatDemo(t *testing.T) {
 	dir, err := os.Getwd()
 	require.NoError(t, err)
diff --git a/go.mod b/go.mod
index 89d468e874..8580bb09a1 100644
--- a/go.mod
+++ b/go.mod
@@ -110,6 +110,8 @@ require (
 	github.com/bahlo/generic-list-go v0.2.0 // indirect
 	github.com/basgys/goxml2json v1.1.1-0.20231018121955-e66ee54ceaad // indirect
 	github.com/buger/jsonparser v1.1.1 // indirect
+	github.com/efficientgo/core v1.0.0-rc.0 // indirect
+	github.com/efficientgo/e2e v0.14.0 // indirect
 	github.com/go-openapi/swag/cmdutils v0.25.4 // indirect
 	github.com/go-openapi/swag/conv v0.25.4 // indirect
 	github.com/go-openapi/swag/fileutils v0.25.4 // indirect
diff --git a/go.sum b/go.sum
index bcb7b8fcc1..80c7dddffa 100644
--- a/go.sum
+++ b/go.sum
@@ -143,6 +143,10 @@ github.com/docker/go-units v0.5.0 h1:69rxXcBk27SvSaaxTtLh/8llcHD8vYHT7WSdRZ/jvr4
 github.com/docker/go-units v0.5.0/go.mod h1:fgPhTUdO+D/Jk86RDLlptpiXQzgHJF7gydDDbaIK4Dk=
 github.com/edsrzf/mmap-go v1.2.0 h1:hXLYlkbaPzt1SaQk+anYwKSRNhufIDCchSPkUD6dD84=
 github.com/edsrzf/mmap-go v1.2.0/go.mod h1:19H/e8pUPLicwkyNgOykDXkJ9F0MHE+Z52B8EIth78Q=
+github.com/efficientgo/core v1.0.0-rc.0 h1:jJoA0N+C4/knWYVZ6GrdHOtDyrg8Y/TR4vFpTaqTsqs=
+github.com/efficientgo/core v1.0.0-rc.0/go.mod h1:kQa0V74HNYMfuJH6jiPiwNdpWXl4xd/K4tzlrcvYDQI=
+github.com/efficientgo/e2e v0.14.0 h1:Jxgeus4nq4COPhACC7nYRTKX1BTzSS86Z/Z2sW9W+kE=
+github.com/efficientgo/e2e v0.14.0/go.mod h1:Hi+sz0REtlhVZ8zcdeTC3j6LUEEpJpPtNjOaOKuNcgI=
 github.com/emicklei/go-restful/v3 v3.12.2 h1:DhwDP0vY3k8ZzE0RunuJy8GhNpPL6zqLkDf9B/a0/xU=
 github.com/emicklei/go-restful/v3 v3.12.2/go.mod h1:6n3XBCmQQb25CM2LCACGz8ukIrRry+4bhvbpWn3mrbc=
 github.com/envoyproxy/go-control-plane/envoy v1.36.0 h1:yg/JjO5E7ubRyKX3m07GF3reDNEnfOboJ0QySbH736g=