diff --git a/app/controllers/api/v1/accounts/captain/reports/insights_controller.rb b/app/controllers/api/v1/accounts/captain/reports/insights_controller.rb
index 7f0a66cf7..4a91e1685 100644
--- a/app/controllers/api/v1/accounts/captain/reports/insights_controller.rb
+++ b/app/controllers/api/v1/accounts/captain/reports/insights_controller.rb
@@ -1,13 +1,6 @@
 class Api::V1::Accounts::Captain::Reports::InsightsController < Api::V1::Accounts::BaseController
   def index
-    unit_id = params[:unit_id].present? ? params[:unit_id].to_i : nil
-    inbox_id = params[:inbox_id].present? ? params[:inbox_id].to_i : nil
-
-    scope = Captain::ConversationInsight.where(account_id: Current.account.id)
-    scope = scope.where(captain_unit_id: unit_id) if unit_id
-    scope = scope.where(inbox_id: inbox_id) if inbox_id
-
-    insights = scope.order(period_start: :desc).limit(12)
+    insights = filtered_insights.order(period_start: :desc).limit(12)
 
     render json: insights.map { |i| format_insight(i) }
   end
@@ -39,6 +32,22 @@ class Api::V1::Accounts::Captain::Reports::InsightsController < Api::V1::Account
 
   private
 
+  def filtered_insights
+    scope = Captain::ConversationInsight.where(account_id: Current.account.id)
+    scope = scope.where(captain_unit_id: filter_unit_id) if filter_unit_id
+    scope = scope.where(inbox_id: filter_inbox_id) if filter_inbox_id
+    scope = scope.for_period(*requested_period) if requested_period
+    scope
+  end
+
+  def filter_unit_id
+    params[:unit_id].presence&.to_i
+  end
+
+  def filter_inbox_id
+    params[:inbox_id].presence&.to_i
+  end
+
   def enqueue_insight(unit_id, inbox_id, period_start, period_end)
     insight = find_or_init_insight(unit_id, inbox_id, period_start, period_end)
     return render json: { status: 'processing', message: 'Análise já está em andamento' } if insight.processing?
@@ -77,6 +86,14 @@ class Api::V1::Accounts::Captain::Reports::InsightsController < Api::V1::Account
     default
   end
 
+  def requested_period
+    return nil if params[:period_start].blank? || params[:period_end].blank?
+
+    [Date.parse(params[:period_start].to_s), Date.parse(params[:period_end].to_s)]
+  rescue ArgumentError, TypeError
+    nil
+  end
+
   def format_insight(insight)
     {
       id: insight.id,
diff --git a/app/javascript/dashboard/routes/dashboard/settings/captain/reports/Index.vue b/app/javascript/dashboard/routes/dashboard/settings/captain/reports/Index.vue
index 22746ea29..035a032d9 100644
--- a/app/javascript/dashboard/routes/dashboard/settings/captain/reports/Index.vue
+++ b/app/javascript/dashboard/routes/dashboard/settings/captain/reports/Index.vue
@@ -253,12 +253,22 @@ const fetchLpStats = async () => {
 
 let pollInterval = null;
 
+const insightFilterParams = () => {
+  const { period_start, period_end } = getPeriodDates(selectedPeriod.value);
+  return {
+    ...(selectedInboxId.value && { inbox_id: selectedInboxId.value }),
+    ...(period_start && period_end && { period_start, period_end }),
+  };
+};
+
+const fetchInsightsForSelectedFilters = async () => {
+  await store.dispatch('captainReports/fetchInsights', insightFilterParams());
+};
+
 const startPolling = () => {
   if (pollInterval) return;
   pollInterval = setInterval(async () => {
-    await store.dispatch('captainReports/fetchInsights', {
-      inbox_id: selectedInboxId.value,
-    });
+    await fetchInsightsForSelectedFilters();
   }, 10000);
 };
 
@@ -289,6 +299,7 @@ watch(activeTab, async tab => {
 watch([customStartDate, customEndDate], async () => {
   if (selectedPeriod.value !== 'custom') return;
   if (!customStartDate.value || !customEndDate.value) return;
+  await fetchInsightsForSelectedFilters();
   if (activeTab.value === 'landing_pages') await fetchLpStats();
   if (activeTab.value === 'operational') await fetchOperational();
   if (activeTab.value === 'executive') await fetchExecutive();
@@ -308,7 +319,7 @@ watch(
 onMounted(async () => {
   await store.dispatch('inboxes/get');
   await store.dispatch('captainAssistants/get');
-  await store.dispatch('captainReports/fetchInsights', {});
+  await fetchInsightsForSelectedFilters();
   if (hasProcessingInsights.value) startPolling();
   await fetchLpStats();
 });
@@ -320,9 +331,7 @@ onUnmounted(() => {
 const onFilterChange = async event => {
   const value = event.target.value;
   selectedInboxId.value = value ? Number(value) : null;
-  await store.dispatch('captainReports/fetchInsights', {
-    inbox_id: selectedInboxId.value,
-  });
+  await fetchInsightsForSelectedFilters();
   if (activeTab.value === 'landing_pages') await fetchLpStats();
   if (activeTab.value === 'operational') await fetchOperational();
   if (activeTab.value === 'executive') await fetchExecutive();
@@ -330,6 +339,7 @@ const onFilterChange = async event => {
 
 const onPeriodChange = async event => {
   selectedPeriod.value = event.target.value;
+  await fetchInsightsForSelectedFilters();
   if (activeTab.value === 'landing_pages') await fetchLpStats();
   if (activeTab.value === 'operational') await fetchOperational();
   if (activeTab.value === 'executive') await fetchExecutive();
diff --git a/enterprise/app/jobs/captain/reports/generate_insights_job.rb b/enterprise/app/jobs/captain/reports/generate_insights_job.rb
index 0936ffd1a..fc362a489 100644
--- a/enterprise/app/jobs/captain/reports/generate_insights_job.rb
+++ b/enterprise/app/jobs/captain/reports/generate_insights_job.rb
@@ -46,17 +46,21 @@ class Captain::Reports::GenerateInsightsJob < ApplicationJob
       account: account,
       unit: unit,
       inbox: inbox,
-      conversations: conversations
+      conversations: conversations,
+      period_start: period_start,
+      period_end: period_end
     ).analyze
 
-    insight.update!(messages_count: conversations.sum { |conv| conv.messages.count })
+    insight.update!(messages_count: messages_in_period(conversations, period_start, period_end).count)
     insight.mark_done!(payload)
   end
 
   def fetch_conversations(account, unit, inbox, period_start, period_end)
     scope = account.conversations
-                   .where(created_at: period_start.beginning_of_day..period_end.end_of_day)
-                   .includes(:messages)
+                   .joins(:messages)
+                   .where(messages: { created_at: period_start.beginning_of_day..period_end.end_of_day })
+                   .where.not(messages: { message_type: [Message.message_types[:activity], Message.message_types[:template]] })
+                   .where(messages: { private: false })
 
     if inbox
       scope = scope.where(inbox_id: inbox.id)
@@ -65,6 +69,19 @@ class Captain::Reports::GenerateInsightsJob < ApplicationJob
       scope = scope.where(inbox_id: inbox_ids) if inbox_ids.any?
     end
 
-    scope.to_a
+    account.conversations
+           .where(id: scope.select(:id).distinct)
+           .includes(:inbox, :contact, :messages)
+           .to_a
+  end
+
+  def messages_in_period(conversations, period_start, period_end)
+    conversation_ids = conversations.map(&:id)
+    return Message.none if conversation_ids.empty?
+
+    Message.where(conversation_id: conversation_ids)
+           .where(created_at: period_start.beginning_of_day..period_end.end_of_day)
+           .where.not(message_type: %i[activity template])
+           .where(private: false)
   end
 end
diff --git a/enterprise/app/services/captain/llm/conversation_insight_service.rb b/enterprise/app/services/captain/llm/conversation_insight_service.rb
index 8dd65ec77..7e835e012 100644
--- a/enterprise/app/services/captain/llm/conversation_insight_service.rb
+++ b/enterprise/app/services/captain/llm/conversation_insight_service.rb
@@ -3,12 +3,14 @@ class Captain::Llm::ConversationInsightService < Llm::BaseAiService
 
   MAX_CHARS_PER_CHUNK = 40_000
 
-  def initialize(account:, conversations:, unit: nil, inbox: nil)
+  def initialize(account:, conversations:, unit: nil, inbox: nil, period_start: nil, period_end: nil)
     super()
     @account = account
     @unit = unit
     @inbox = inbox
     @conversations = conversations
+    @period_start = period_start
+    @period_end = period_end
   end
 
   # Analisa as conversas e retorna o payload de insights
@@ -24,10 +26,10 @@ class Captain::Llm::ConversationInsightService < Llm::BaseAiService
 
   private
 
-  attr_reader :account, :unit, :inbox, :conversations
+  attr_reader :account, :unit, :inbox, :conversations, :period_start, :period_end
 
   def build_chunks
-    texts = conversations.map(&:to_llm_text).reject(&:blank?)
+    texts = conversations.map { |conversation| conversation_text(conversation) }.reject(&:blank?)
     return [] if texts.empty?
 
     chunks = []
@@ -48,6 +50,38 @@ class Captain::Llm::ConversationInsightService < Llm::BaseAiService
     chunks
   end
 
+  def conversation_text(conversation)
+    return conversation.to_llm_text unless period_start && period_end
+
+    messages = conversation.messages
+                           .where(created_at: period_start.beginning_of_day..period_end.end_of_day)
+                           .where.not(message_type: %i[activity template])
+                           .where(private: false)
+                           .order(created_at: :asc)
+
+    return nil if messages.empty?
+
+    [
+      "Conversation ID: ##{conversation.display_id}",
+      "Channel: #{conversation.inbox.channel.name}",
+      'Message History:',
+      messages.map { |message| format_message(message) }.join
+    ].join("\n")
+  end
+
+  def format_message(message)
+    sender = case message.sender_type
+             when 'User'
+               'Support Agent'
+             when 'Contact'
+               'User'
+             else
+               'Bot'
+             end
+
+    "#{sender}: #{message.content_for_llm}\n"
+  end
+
   def analyze_chunk(chunk)
     response = instrument_llm_call(instrumentation_params) do
       chat
diff --git a/spec/enterprise/jobs/captain/reports/generate_insights_job_spec.rb b/spec/enterprise/jobs/captain/reports/generate_insights_job_spec.rb
new file mode 100644
index 000000000..5248b55c6
--- /dev/null
+++ b/spec/enterprise/jobs/captain/reports/generate_insights_job_spec.rb
@@ -0,0 +1,53 @@
+require 'rails_helper'
+
+RSpec.describe Captain::Reports::GenerateInsightsJob do
+  let(:account) { create(:account) }
+  let(:inbox) { create(:inbox, account: account) }
+  let(:period_start) { Date.new(2026, 5, 17) }
+  let(:period_end) { Date.new(2026, 5, 17) }
+  let(:payload) do
+    {
+      'top_topics' => [],
+      'ai_failures' => [],
+      'faq_gaps' => [],
+      'sentiment' => { 'positive_count' => 0, 'negative_count' => 0, 'neutral_count' => 0, 'summary' => '' },
+      'highlights' => { 'praises' => [], 'complaints' => [] },
+      'most_requested_suites' => [],
+      'price_reactions' => { 'summary' => '', 'objections_count' => 0 },
+      'customer_opportunities' => [],
+      'recommendations' => [],
+      'period_summary' => 'Resumo do dia.'
+    }
+  end
+
+  it 'analyzes conversations with messages in the requested period and counts only period messages' do
+    conversation_with_today_messages = create(:conversation, account: account, inbox: inbox, created_at: 3.days.ago)
+    create(:message, account: account, inbox: inbox, conversation: conversation_with_today_messages, content: 'mensagem antiga',
+                     created_at: period_start.prev_day.noon)
+    create(:message, account: account, inbox: inbox, conversation: conversation_with_today_messages, content: 'mensagem hoje',
+                     created_at: period_start.noon)
+    create(:message, account: account, inbox: inbox, conversation: conversation_with_today_messages, content: 'resposta hoje',
+                     message_type: 'outgoing', created_at: period_start.noon + 5.minutes)
+
+    conversation_without_today_messages = create(:conversation, account: account, inbox: inbox, created_at: period_start.noon)
+    create(:message, account: account, inbox: inbox, conversation: conversation_without_today_messages, content: 'fora do periodo',
+                     created_at: period_start.prev_day.noon)
+
+    service = instance_double(Captain::Llm::ConversationInsightService, analyze: payload)
+    expect(Captain::Llm::ConversationInsightService).to receive(:new)
+      .with(hash_including(conversations: [conversation_with_today_messages], period_start: period_start, period_end: period_end))
+      .and_return(service)
+
+    described_class.perform_now(account.id, nil, period_start, period_end, inbox.id)
+
+    insight = Captain::ConversationInsight.find_by!(
+      account_id: account.id,
+      inbox_id: inbox.id,
+      period_start: period_start,
+      period_end: period_end
+    )
+    expect(insight.conversations_count).to eq(1)
+    expect(insight.messages_count).to eq(2)
+    expect(insight).to be_done
+  end
+end
diff --git a/spec/enterprise/services/captain/llm/conversation_insight_service_spec.rb b/spec/enterprise/services/captain/llm/conversation_insight_service_spec.rb
new file mode 100644
index 000000000..b23189b7a
--- /dev/null
+++ b/spec/enterprise/services/captain/llm/conversation_insight_service_spec.rb
@@ -0,0 +1,30 @@
+require 'rails_helper'
+
+RSpec.describe Captain::Llm::ConversationInsightService do
+  describe '#build_chunks' do
+    it 'formats only messages inside the requested period' do
+      account = create(:account)
+      inbox = create(:inbox, account: account)
+      period_start = Date.new(2026, 5, 17)
+      conversation = create(:conversation, account: account, inbox: inbox)
+
+      create(:message, account: account, inbox: inbox, conversation: conversation, content: 'mensagem antiga',
+                       created_at: period_start.prev_day.noon)
+      create(:message, account: account, inbox: inbox, conversation: conversation, content: 'mensagem do periodo',
+                       created_at: period_start.noon)
+
+      service = described_class.new(
+        account: account,
+        inbox: inbox,
+        conversations: [conversation],
+        period_start: period_start,
+        period_end: period_start
+      )
+
+      text = service.send(:build_chunks).join("\n")
+
+      expect(text).to include('mensagem do periodo')
+      expect(text).not_to include('mensagem antiga')
+    end
+  end
+end