diff --git a/lib/searchkick/query.rb b/lib/searchkick/query.rb
index f3c2f657..81b7600d 100644
--- a/lib/searchkick/query.rb
+++ b/lib/searchkick/query.rb
@@ -17,8 +17,8 @@ class Query
       :with_score, :misspellings?, :scroll_id, :clear_scroll, :missing_records, :with_hit
 
     def initialize(klass, term = "*", **options)
-      unknown_keywords = options.keys - [:aggs, :block, :body, :body_options, :boost,
-        :boost_by, :boost_by_distance, :boost_by_recency, :boost_where, :conversions, :conversions_term, :debug, :emoji, :exclude, :explain,
+      unknown_keywords = options.keys - [:aggs, :block, :body, :body_options, :boost, :boost_mode, :boost_and,
+        :boost_by, :boost_by_distance, :boost_by_recency, :boost_by_script, :boost_where, :conversions, :conversions_term, :debug, :emoji, :exclude, :explain,
         :fields, :highlight, :includes, :index_name, :indices_boost, :knn, :limit, :load,
         :match, :misspellings, :models, :model_includes, :offset, :operator, :order, :padding, :page, :per_page, :profile,
         :request_params, :routing, :scope_results, :scroll, :select, :similar, :smart_aggs, :suggest, :total_entries, :track, :type, :where]
@@ -273,7 +273,7 @@ def prepare
       @json = options[:body]
       if @json
         ignored_options = options.keys & [:aggs, :boost,
-          :boost_by, :boost_by_distance, :boost_by_recency, :boost_where, :conversions, :conversions_term, :exclude, :explain,
+          :boost_by, :boost_by_distance, :boost_by_recency, :boost_by_script, :boost_where, :conversions, :conversions_term, :exclude, :explain,
           :fields, :highlight, :indices_boost, :match, :misspellings, :operator, :order,
           :profile, :select, :smart_aggs, :suggest, :where]
         raise ArgumentError, "Options incompatible with body option: #{ignored_options.join(", ")}" if ignored_options.any?
@@ -415,6 +415,17 @@ def prepare
                   should: {match_type => {field.sub(/\.word_(start|middle|end)\z/, ".analyzed") => qs.first}}
                 }
               }
+            elsif options[:boost_and] && operator.to_s == "or"
+              queries_to_add << {
+                bool: {
+                  must: {
+                    bool: {
+                      should: q2
+                    }
+                  },
+                  should: qs.map { |q| {match_type => {field => q.merge({ operator: "and"})}} }
+                }
+              }
             else
               queries_to_add.concat(q2)
             end
@@ -488,9 +499,10 @@ def prepare
         multiply_filters = []
 
         set_boost_by(multiply_filters, custom_filters)
-        set_boost_where(custom_filters)
+        set_boost_where(multiply_filters, custom_filters)
         set_boost_by_distance(custom_filters) if options[:boost_by_distance]
         set_boost_by_recency(custom_filters) if options[:boost_by_recency]
+        set_boost_by_script(multiply_filters) if options[:boost_by_script]
 
         payload[:query] = build_query(query, filters, should, must_not, custom_filters, multiply_filters)
 
@@ -603,7 +615,6 @@ def build_query(query, filters, should, must_not, custom_filters, multiply_filte
         bool[:should] = should if should.any?        # conversions
         query = {bool: bool}
       end
-
       if custom_filters.any?
         query = {
           function_score: {
@@ -707,6 +718,16 @@ def set_boost_by_recency(custom_filters)
       end
     end
 
+    def set_boost_by_script(multiply_filters)
+      options[:boost_by_script] = [options[:boost_by_script]] if options[:boost_by_script].is_a?(Searchkick::Script)
+      options[:boost_by_script].each do |value|
+        unless value.is_a?(Searchkick::Script)
+          raise TypeError, "expected Searchkick::Script"
+        end
+        multiply_filters << { script_score: { script: value.to_h } }
+      end
+    end
+
     def set_boost_by(multiply_filters, custom_filters)
       boost_by = options[:boost_by] || {}
       if boost_by.is_a?(Array)
@@ -720,18 +741,31 @@ def set_boost_by(multiply_filters, custom_filters)
       multiply_filters.concat boost_filters(multiply_by || {})
     end
 
-    def set_boost_where(custom_filters)
+    def boost_where_filter(value = {}, multiply_filters, custom_filters)
+      filters = {
+        multiply: multiply_filters,
+        sum: custom_filters
+      }
+      default = options[:boost_mode]&.to_sym || :sum
+      key = value&.delete(:boost_mode)&.to_sym || default
+      filters[key]
+    end
+
+    def set_boost_where(multiply_filters, custom_filters)
       boost_where = options[:boost_where] || {}
       boost_where.each do |field, value|
         if value.is_a?(Array) && value.first.is_a?(Hash)
           value.each do |value_factor|
-            custom_filters << custom_filter(field, value_factor[:value], value_factor[:factor])
+            filter = boost_where_filter(value_factor, multiply_filters, custom_filters)
+            filter << custom_filter(field, value_factor[:value], value_factor[:factor])
           end
         elsif value.is_a?(Hash)
-          custom_filters << custom_filter(field, value[:value], value[:factor])
+          filter = boost_where_filter(value, multiply_filters, custom_filters)
+          filter << custom_filter(field, value[:value], value[:factor])
         else
           factor = 1000
-          custom_filters << custom_filter(field, value, factor)
+          filter = boost_where_filter(value, multiply_filters, custom_filters)
+          filter << custom_filter(field, value, factor)
         end
       end
     end
diff --git a/lib/searchkick/script.rb b/lib/searchkick/script.rb
index 0cac5f92..ce283a0e 100644
--- a/lib/searchkick/script.rb
+++ b/lib/searchkick/script.rb
@@ -7,5 +7,13 @@ def initialize(source, lang: "painless", params: {})
       @lang = lang
       @params = params
     end
+
+    def to_h
+      {
+        source:,
+        lang:,
+        params:
+      }
+    end
   end
 end