FEATURE: Use stop_sequences for faster HyDE searches with Claude (#203)

lib/modules/embeddings/hyde_generators/anthropic.rb

@@ -6,11 +6,13 @@ module DiscourseAi
       class Anthropic < DiscourseAi::Embeddings::HydeGenerators::Base
         def prompt(search_term)
           <<~TEXT
-              Given a search term given between <input> tags, generate a forum post about a given subject.
+            Human: Given a search term given between <input> tags, generate a forum post about a given subject.
             #{basic_prompt_instruction}
             <input>#{search_term}</input>
 
             Respond with the generated post between <ai> tags.
+
+            Assistant:\n
           TEXT
         end
 
@@ -24,6 +26,7 @@ module DiscourseAi
               prompt(query),
               SiteSetting.ai_embeddings_semantic_search_hyde_model,
               max_tokens: 400,
+              stop_sequences: ["</ai>"],
             ).dig(:completion)
 
           Nokogiri::HTML5.fragment(response).at("ai").text

lib/shared/inference/anthropic_completions.rb

@@ -12,7 +12,8 @@ module ::DiscourseAi
         temperature: nil,
         top_p: nil,
         max_tokens: nil,
-        user_id: nil
+        user_id: nil,
+        stop_sequences: nil
       )
         log = nil
         response_data = +""
@@ -31,6 +32,7 @@ module ::DiscourseAi
         payload[:max_tokens_to_sample] = max_tokens || 2000
         payload[:temperature] = temperature if temperature
         payload[:stream] = true if block_given?
+        payload[:stop_sequences] = stop_sequences if stop_sequences
 
         Net::HTTP.start(
           url.host,