diff --git a/kong/llm/drivers/shared.lua b/kong/llm/drivers/shared.lua
index 03124ee2e69d..9cd1a0404db6 100644
--- a/kong/llm/drivers/shared.lua
+++ b/kong/llm/drivers/shared.lua
@@ -448,7 +448,7 @@ function _M.pre_request(conf, request_table)
 
   -- log tokens prompt for reports and billing
   local prompt_tokens, err = self:calculate_cost(request_table, {}, 1.0)
-  kong.ctx.shared.ai_reponse_tokens = (kong.ctx.shared.ai_reponse_tokens or 0) + prompt_tokens
+  kong.ctx.shared.ai_prompt_tokens = (kong.ctx.shared.ai_prompt_tokens or 0) + prompt_tokens
 
   return true, nil
 end