diff --git a/.rubocop_todo/rspec/named_subject.yml b/.rubocop_todo/rspec/named_subject.yml
index 45c9cf90b0327dea0f5afdfeef8ae85a6b717a2c..c99d6784b735f01577512ae63f5b76bc456bacfb 100644
--- a/.rubocop_todo/rspec/named_subject.yml
+++ b/.rubocop_todo/rspec/named_subject.yml
@@ -1097,7 +1097,6 @@ RSpec/NamedSubject:
     - 'ee/spec/services/llm/generate_test_file_service_spec.rb'
     - 'ee/spec/services/llm/git_command_service_spec.rb'
     - 'ee/spec/services/llm/resolve_vulnerability_service_spec.rb'
-    - 'ee/spec/services/llm/tanuki_bot_service_spec.rb'
     - 'ee/spec/services/member_roles/create_service_spec.rb'
     - 'ee/spec/services/merge_request_approval_settings/update_service_spec.rb'
     - 'ee/spec/services/merge_requests/merge_service_spec.rb'
diff --git a/doc/api/graphql/reference/index.md b/doc/api/graphql/reference/index.md
index ebd053bdb5a23c257fdae924219f1896165ede14..5649b65c598fa243e5b4e95411f823a3bd77464c 100644
--- a/doc/api/graphql/reference/index.md
+++ b/doc/api/graphql/reference/index.md
@@ -1264,7 +1264,6 @@ Input type: `AiActionInput`
 | <a id="mutationaiactionresolvevulnerability"></a>`resolveVulnerability` | [`AiResolveVulnerabilityInput`](#airesolvevulnerabilityinput) | Input for resolve_vulnerability AI action. |
 | <a id="mutationaiactionsummarizecomments"></a>`summarizeComments` | [`AiSummarizeCommentsInput`](#aisummarizecommentsinput) | Input for summarize_comments AI action. |
 | <a id="mutationaiactionsummarizereview"></a>`summarizeReview` | [`AiSummarizeReviewInput`](#aisummarizereviewinput) | Input for summarize_review AI action. |
-| <a id="mutationaiactiontanukibot"></a>`tanukiBot` | [`AiTanukiBotInput`](#aitanukibotinput) | Input for tanuki_bot AI action. |
 
 #### Fields
 
@@ -32438,15 +32437,6 @@ see the associated mutation type above.
 | ---- | ---- | ----------- |
 | <a id="aisummarizereviewinputresourceid"></a>`resourceId` | [`AiModelID!`](#aimodelid) | Global ID of the resource to mutate. |
 
-### `AiTanukiBotInput`
-
-#### Arguments
-
-| Name | Type | Description |
-| ---- | ---- | ----------- |
-| <a id="aitanukibotinputquestion"></a>`question` | [`String!`](#string) | GitLab documentation question for AI to answer. |
-| <a id="aitanukibotinputresourceid"></a>`resourceId` | [`AiModelID!`](#aimodelid) | Global ID of the resource to mutate. |
-
 ### `AlertManagementPayloadAlertFieldInput`
 
 Field that are available while modifying the custom mapping attributes for an HTTP integration.
diff --git a/ee/app/graphql/types/ai/tanuki_bot_input_type.rb b/ee/app/graphql/types/ai/tanuki_bot_input_type.rb
deleted file mode 100644
index 4b477dd1f5426bfc9f1516e77e3f5f3c8007d263..0000000000000000000000000000000000000000
--- a/ee/app/graphql/types/ai/tanuki_bot_input_type.rb
+++ /dev/null
@@ -1,14 +0,0 @@
-# frozen_string_literal: true
-
-module Types
-  module Ai
-    class TanukiBotInputType < BaseMethodInputType
-      graphql_name 'AiTanukiBotInput'
-
-      argument :question, GraphQL::Types::String,
-        required: true,
-        validates: { allow_blank: false },
-        description: 'GitLab documentation question for AI to answer.'
-    end
-  end
-end
diff --git a/ee/app/services/llm/execute_method_service.rb b/ee/app/services/llm/execute_method_service.rb
index 8656a9140742b6de891c7d5e655c3d2d7f4b59fd..47c0ca6b00b322c9fdec3fc1b870a255292cd9df 100644
--- a/ee/app/services/llm/execute_method_service.rb
+++ b/ee/app/services/llm/execute_method_service.rb
@@ -11,7 +11,6 @@ class ExecuteMethodService < BaseService
       summarize_comments: Llm::GenerateSummaryService,
       summarize_review: Llm::MergeRequests::SummarizeReviewService,
       explain_code: Llm::ExplainCodeService,
-      tanuki_bot: Llm::TanukiBotService,
       generate_test_file: Llm::GenerateTestFileService,
       generate_description: Llm::GenerateDescriptionService,
       generate_commit_message: Llm::GenerateCommitMessageService,
diff --git a/ee/app/services/llm/tanuki_bot_service.rb b/ee/app/services/llm/tanuki_bot_service.rb
deleted file mode 100644
index 8b09467406803cedf471a60b601ffb7433ff2b72..0000000000000000000000000000000000000000
--- a/ee/app/services/llm/tanuki_bot_service.rb
+++ /dev/null
@@ -1,23 +0,0 @@
-# frozen_string_literal: true
-
-module Llm
-  class TanukiBotService < BaseService
-    def valid?
-      super && Gitlab::Llm::TanukiBot.enabled_for?(user: user)
-    end
-
-    private
-
-    def ai_action
-      :tanuki_bot
-    end
-
-    def perform
-      schedule_completion_worker
-    end
-
-    def content(_action_name)
-      options[:question]
-    end
-  end
-end
diff --git a/ee/lib/gitlab/llm/anthropic/completions/tanuki_bot.rb b/ee/lib/gitlab/llm/anthropic/completions/tanuki_bot.rb
deleted file mode 100644
index dc966236e9711fbc133e37ee0f418871af9e9829..0000000000000000000000000000000000000000
--- a/ee/lib/gitlab/llm/anthropic/completions/tanuki_bot.rb
+++ /dev/null
@@ -1,29 +0,0 @@
-# frozen_string_literal: true
-
-module Gitlab
-  module Llm
-    module Anthropic
-      module Completions
-        class TanukiBot < Gitlab::Llm::Completions::Base
-          # After we remove REST API, refactor so that we use methods defined in templates/tanuki_bot.rb, e.g.:
-          # initial_prompt = ai_prompt_class.initial_prompt(question)
-          def execute
-            question = options[:question]
-
-            response_modifier = ::Gitlab::Llm::TanukiBot.new(
-              current_user: user,
-              question: question,
-              tracking_context: tracking_context
-            ).execute
-
-            ::Gitlab::Llm::GraphqlSubscriptionResponseService.new(
-              user, resource, response_modifier, options: response_options
-            ).execute
-
-            response_modifier
-          end
-        end
-      end
-    end
-  end
-end
diff --git a/ee/lib/gitlab/llm/completions_factory.rb b/ee/lib/gitlab/llm/completions_factory.rb
index afb9b368f75efdee2aa96d5ed586df96c32a26eb..07154b7620a5cb5d23cbd15c124449bb6a2625f0 100644
--- a/ee/lib/gitlab/llm/completions_factory.rb
+++ b/ee/lib/gitlab/llm/completions_factory.rb
@@ -29,11 +29,6 @@ class CompletionsFactory
           prompt_class: ::Gitlab::Llm::VertexAi::Templates::ExplainCode,
           feature_category: :ai_abstraction_layer
         },
-        tanuki_bot: {
-          service_class: ::Gitlab::Llm::Anthropic::Completions::TanukiBot,
-          prompt_class: ::Gitlab::Llm::Anthropic::Templates::TanukiBot,
-          feature_category: :ai_abstraction_layer
-        },
         generate_test_file: {
           service_class: ::Gitlab::Llm::VertexAi::Completions::GenerateTestFile,
           prompt_class: ::Gitlab::Llm::Templates::GenerateTestFile,
diff --git a/ee/spec/lib/gitlab/llm/anthropic/completions/tanuki_bot_spec.rb b/ee/spec/lib/gitlab/llm/anthropic/completions/tanuki_bot_spec.rb
deleted file mode 100644
index b8654ab28c6120900e372d3a3dc90f3fb6d6b7bf..0000000000000000000000000000000000000000
--- a/ee/spec/lib/gitlab/llm/anthropic/completions/tanuki_bot_spec.rb
+++ /dev/null
@@ -1,59 +0,0 @@
-# frozen_string_literal: true
-
-require 'spec_helper'
-
-RSpec.describe Gitlab::Llm::Anthropic::Completions::TanukiBot, feature_category: :duo_chat do
-  let_it_be(:user) { create(:user) }
-
-  let(:question) { 'A question' }
-  let(:options) { { question: question } }
-  let(:template_class) { ::Gitlab::Llm::Anthropic::Templates::TanukiBot }
-  let(:tracking_context) { { request_id: 'uuid', action: :tanuki_bot } }
-
-  let(:ai_response) do
-    instance_double(Gitlab::Llm::Anthropic::ResponseModifiers::TanukiBot, response_body: "text", errors: [], extras: {})
-  end
-
-  let(:prompt_message) do
-    build(:ai_message, :tanuki_bot, user: user, resource: user, request_id: 'uuid')
-  end
-
-  subject(:tanuki_bot) { described_class.new(prompt_message, template_class, options).execute }
-
-  describe '#execute' do
-    let(:tanuki_instance) { instance_double(::Gitlab::Llm::TanukiBot) }
-
-    it 'makes a call to ::Gitlab::Llm::TanukiBot' do
-      expect(::Gitlab::Llm::TanukiBot).to receive(:new)
-        .with(current_user: user, question: question, tracking_context: tracking_context).and_return(tanuki_instance)
-      expect(tanuki_instance).to receive(:execute).and_return(ai_response)
-
-      tanuki_bot
-    end
-
-    it 'calls ResponseService' do
-      allow(::Gitlab::Llm::TanukiBot).to receive(:new)
-        .with(current_user: user, question: question, tracking_context: tracking_context).and_return(tanuki_instance)
-      allow(tanuki_instance).to receive(:execute).and_return(ai_response)
-
-      response_modifier = ai_response
-      response_service = double
-      params = [user, user, response_modifier, { options: { request_id: 'uuid', ai_action: :tanuki_bot } }]
-
-      expect(::Gitlab::Llm::GraphqlSubscriptionResponseService).to receive(:new).with(*params).and_return(
-        response_service
-      )
-      expect(response_service).to receive(:execute)
-
-      tanuki_bot
-    end
-
-    it 'handles nil responses' do
-      allow(::Gitlab::Llm::TanukiBot).to receive(:execute).and_return(
-        Gitlab::Llm::ResponseModifiers::EmptyResponseModifier.new(nil)
-      )
-
-      expect { tanuki_bot }.not_to raise_error
-    end
-  end
-end
diff --git a/ee/spec/services/llm/tanuki_bot_service_spec.rb b/ee/spec/services/llm/tanuki_bot_service_spec.rb
deleted file mode 100644
index cbe89b647b89614f6467c1bc564533519f1883f7..0000000000000000000000000000000000000000
--- a/ee/spec/services/llm/tanuki_bot_service_spec.rb
+++ /dev/null
@@ -1,51 +0,0 @@
-# frozen_string_literal: true
-
-require 'spec_helper'
-
-RSpec.describe Llm::TanukiBotService, :saas, feature_category: :global_search do
-  let_it_be(:user) { create(:user) }
-
-  let_it_be(:options) { { question: 'A question' } }
-
-  subject { described_class.new(user, user, options) }
-
-  before do
-    stub_licensed_features(ai_tanuki_bot: true)
-  end
-
-  describe '#perform' do
-    let(:resource) { user }
-    let(:action_name) { :tanuki_bot }
-    let(:content) { options[:question] }
-
-    before do
-      allow(user).to receive(:any_group_with_ai_available?).and_return(true)
-    end
-
-    it_behaves_like 'schedules completion worker'
-
-    context 'when ai_global_switch feature flag is disabled' do
-      before do
-        stub_feature_flags(ai_global_switch: false)
-      end
-
-      it 'returns an error' do
-        expect(Llm::CompletionWorker).not_to receive(:perform_for)
-
-        expect(subject.execute).to be_error
-      end
-    end
-
-    context 'when tanuki_bot licensed feature is disabled' do
-      before do
-        stub_licensed_features(ai_tanuki_bot: false)
-      end
-
-      it 'returns an error' do
-        expect(Llm::CompletionWorker).not_to receive(:perform_for)
-
-        expect(subject.execute).to be_error
-      end
-    end
-  end
-end
diff --git a/rubocop/rubocop-code_reuse.yml b/rubocop/rubocop-code_reuse.yml
index 2bd3339368da83b837d0dac71bb1564f8f091f22..6f9d7902dc68124a333e336f38ce5d3ceac14a23 100644
--- a/rubocop/rubocop-code_reuse.yml
+++ b/rubocop/rubocop-code_reuse.yml
@@ -42,5 +42,4 @@ CodeReuse/ActiveRecord:
     - ee/db/fixtures/**/*.rb
     - ee/lib/tasks/**/*.rake
     - ee/lib/ee/gitlab/background_migration/**/*.rb
-    - ee/lib/gitlab/llm/open_ai/response_modifiers/tanuki_bot.rb
     - ee/lib/gitlab/usage/metrics/instrumentations/**/*.rb