diff --git a/lib/completions/endpoints/fake.rb b/lib/completions/endpoints/fake.rb
index 70b04543..d307ada5 100644
--- a/lib/completions/endpoints/fake.rb
+++ b/lib/completions/endpoints/fake.rb
@@ -81,7 +81,7 @@ module DiscourseAi
         end
 
         def self.delays
-          @delays ||= Array.new(10) { rand * 6 }
+          @delays ||= Array.new(10) { Rails.env.test? ? 0 : rand(0..5) }
         end
 
         def self.delays=(delays)
diff --git a/spec/jobs/scheduled/summaries_backfill_spec.rb b/spec/jobs/scheduled/summaries_backfill_spec.rb
index f3757cf5..ccf23b06 100644
--- a/spec/jobs/scheduled/summaries_backfill_spec.rb
+++ b/spec/jobs/scheduled/summaries_backfill_spec.rb
@@ -7,9 +7,6 @@ RSpec.describe Jobs::SummariesBackfill do
   let(:limit) { 24 } # guarantee two summaries per batch
   let(:intervals) { 12 } # budget is split into intervals. Job runs every five minutes.
 
-  before { DiscourseAi::Completions::Endpoints::Fake.delays = [] }
-  after { DiscourseAi::Completions::Endpoints::Fake.reset! }
-
   before do
     assign_fake_provider_to(:ai_summarization_model)
     SiteSetting.ai_summarization_enabled = true
diff --git a/spec/lib/modules/summarization/fold_content_spec.rb b/spec/lib/modules/summarization/fold_content_spec.rb
index 1cb174ec..7f6fafaf 100644
--- a/spec/lib/modules/summarization/fold_content_spec.rb
+++ b/spec/lib/modules/summarization/fold_content_spec.rb
@@ -10,9 +10,6 @@ RSpec.describe DiscourseAi::Summarization::FoldContent do
 
   before { SiteSetting.ai_summarization_enabled = true }
 
-  before { DiscourseAi::Completions::Endpoints::Fake.delays = [] }
-  after { DiscourseAi::Completions::Endpoints::Fake.reset! }
-
   describe "#summarize" do
     before do
       # Make sure each content fits in a single chunk.