diff --git a/app/controllers/admin/prompt_sandboxes_controller.rb b/app/controllers/admin/prompt_sandboxes_controller.rb
index f8c15444f..5f2d33739 100644
--- a/app/controllers/admin/prompt_sandboxes_controller.rb
+++ b/app/controllers/admin/prompt_sandboxes_controller.rb
@@ -1,23 +1,33 @@
 class Admin::PromptSandboxesController < AdminController
   include DayTimelinesScoped
 
+  MODELS = %w[
+      chatgpt-4o-latest
+      gpt-4.1
+      gpt-3.5-turbo
+      gpt-4.1-mini
+      gpt-4.1-nano
+      gpt-4o-mini
+    ]
+
   def show
-    @prompt = cookies[:prompt].presence || Event::Summarizer::PROMPT
-    @summary, @summarizable_content = summarize(@day_timeline, @prompt)
+    @llm_models = MODELS.map { |model| [ model, model ] }
+    @llm_model = params[:llm_model] || Event::Summarizer::LLM_MODEL
+
+    if @prompt = cookies[:prompt].presence
+      summarizer = Event::Summarizer.new(@day_timeline.events, prompt: @prompt, llm_model: @llm_model)
+      @summary = Event::ActivitySummary.new(content: summarizer.summarize).to_html
+      @summarizable_content == summarizer.summarizable_content.html_safe
+      cookies[:prompt] = nil
+    else
+      @prompt = Event::Summarizer::PROMPT
+    end
   end
 
   def create
     @prompt = params[:prompt]
+    @llm_model = params[:llm_model]
     cookies[:prompt] = @prompt
-    @summary, @summarizable_content = summarize(@day_timeline, @prompt)
-    redirect_to admin_prompt_sandbox_path(day: @day_timeline.day)
+    redirect_to admin_prompt_sandbox_path(day: @day_timeline.day, llm_model: @llm_model)
   end
-
-  private
-    def summarize(day_timeline, prompt)
-      summarizer = Event::Summarizer.new(day_timeline.events, prompt: prompt)
-      summary = summarizer.summarize
-      activity_summary = Event::ActivitySummary.new(content: summary)
-      [ activity_summary.to_html, summarizer.summarizable_content.html_safe ]
-    end
 end
diff --git a/app/models/event/summarizer.rb b/app/models/event/summarizer.rb
index 0416fdd8f..723d55da6 100644
--- a/app/models/event/summarizer.rb
+++ b/app/models/event/summarizer.rb
@@ -49,9 +49,10 @@ class Event::Summarizer
       - ❌ Ann closed [card 123](<card path>)
   PROMPT
 
-  def initialize(events, prompt: PROMPT)
+  def initialize(events, prompt: PROMPT, llm_model: LLM_MODEL)
     @events = events
     @prompt = prompt
+    @llm_model = llm_model
 
     self.default_url_options[:script_name] = "/#{Account.sole.queenbee_id}"
   end
@@ -66,10 +67,10 @@ class Event::Summarizer
   end
 
   private
-    attr_reader :prompt
+    attr_reader :prompt, :llm_model
 
     def chat
-      chat = RubyLLM.chat(model: LLM_MODEL)
+      chat = RubyLLM.chat(model: llm_model)
       chat.with_instructions(combine(prompt, domain_model_prompt, user_data_injection_prompt))
     end
 
diff --git a/app/views/admin/prompt_sandboxes/show.html.erb b/app/views/admin/prompt_sandboxes/show.html.erb
index e151ee7ba..e709f4850 100644
--- a/app/views/admin/prompt_sandboxes/show.html.erb
+++ b/app/views/admin/prompt_sandboxes/show.html.erb
@@ -12,9 +12,17 @@
       <%= form.date_field :day, value: @day_timeline.day.to_date %>
     </div>
 
+    <div class="field">
+      <%= form.label :llm_model, "LLM Model:" %>
+      <%= form.select :llm_model,
+          options_for_select(@llm_models, @llm_model),
+          {} %>
+    </div>
+
     <div class="actions">
       <%= form.submit "Generate Summary", class: "btn btn-primary" %>
     </div>
+
   <% end %>
 
   <% if @summary.present? %>
diff --git a/test/controllers/admin/prompt_sandboxes_controller_test.rb b/test/controllers/admin/prompt_sandboxes_controller_test.rb
index 03b38238f..f03866a57 100644
--- a/test/controllers/admin/prompt_sandboxes_controller_test.rb
+++ b/test/controllers/admin/prompt_sandboxes_controller_test.rb
@@ -14,7 +14,8 @@ class Admin::PromptSandboxesControllerTest < ActionDispatch::IntegrationTest
   test "create processes prompt and renders show with summary" do
     post admin_prompt_sandbox_path, params: { prompt: "Test prompt for summarization" }
 
-    assert_response :success
+    assert_response :redirect
+    assert_redirected_to admin_prompt_sandbox_path(day: assigns(:day_timeline).day, llm_model: Event::Summarizer::LLM_MODEL)
   end
 
   test "non-staff user gets forbidden on show" do