diff --git a/spec/jobs/scheduled/summaries_backfill_spec.rb b/spec/jobs/scheduled/summaries_backfill_spec.rb
index ccf23b06a..f3757cf57 100644
--- a/spec/jobs/scheduled/summaries_backfill_spec.rb
+++ b/spec/jobs/scheduled/summaries_backfill_spec.rb
@@ -7,6 +7,9 @@
   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 7f6fafaf5..1cb174ece 100644
--- a/spec/lib/modules/summarization/fold_content_spec.rb
+++ b/spec/lib/modules/summarization/fold_content_spec.rb
@@ -10,6 +10,9 @@
 
   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.