diff --git a/lua/avante/config.lua b/lua/avante/config.lua
index 2ed7d2e15..2096ee00b 100644
--- a/lua/avante/config.lua
+++ b/lua/avante/config.lua
@@ -204,7 +204,8 @@ M.get_provider = function(provider)
   end
 end
 
-M.BASE_PROVIDER_KEYS = { "endpoint", "model", "local", "deployment", "api_version", "proxy", "allow_insecure" }
+M.BASE_PROVIDER_KEYS =
+  { "endpoint", "model", "local", "deployment", "api_version", "proxy", "allow_insecure", "api_key_name" }
 
 ---@return {width: integer, height: integer}
 function M.get_sidebar_layout_options()
diff --git a/lua/avante/providers/azure.lua b/lua/avante/providers/azure.lua
index 108865504..7763fab2b 100644
--- a/lua/avante/providers/azure.lua
+++ b/lua/avante/providers/azure.lua
@@ -6,10 +6,10 @@ local O = require("avante.providers").openai
 ---@class AvanteProviderFunctor
 local M = {}
 
-M.API_KEY = "AZURE_OPENAI_API_KEY"
+M.api_key_name = "AZURE_OPENAI_API_KEY"
 
 M.has = function()
-  return os.getenv(M.API_KEY) and true or false
+  return os.getenv(M.api_key_name) and true or false
 end
 
 M.parse_message = O.parse_message
@@ -22,7 +22,7 @@ M.parse_curl_args = function(provider, code_opts)
     ["Content-Type"] = "application/json",
   }
   if not P.env.is_local("azure") then
-    headers["api-key"] = os.getenv(M.API_KEY)
+    headers["api-key"] = os.getenv(base.api_key_name or M.api_key_name)
   end
 
   return {
diff --git a/lua/avante/providers/claude.lua b/lua/avante/providers/claude.lua
index 8cd770ea2..dff439b33 100644
--- a/lua/avante/providers/claude.lua
+++ b/lua/avante/providers/claude.lua
@@ -6,10 +6,10 @@ local P = require("avante.providers")
 ---@class AvanteProviderFunctor
 local M = {}
 
-M.API_KEY = "ANTHROPIC_API_KEY"
+M.api_key_name = "ANTHROPIC_API_KEY"
 
 M.has = function()
-  return os.getenv(M.API_KEY) and true or false
+  return os.getenv(M.api_key_name) and true or false
 end
 
 M.parse_message = function(opts)
@@ -93,7 +93,7 @@ M.parse_curl_args = function(provider, code_opts)
     ["anthropic-beta"] = "prompt-caching-2024-07-31",
   }
   if not P.env.is_local("claude") then
-    headers["x-api-key"] = os.getenv(M.API_KEY)
+    headers["x-api-key"] = os.getenv(base.api_key_name or M.api_key_name)
   end
 
   return {
diff --git a/lua/avante/providers/copilot.lua b/lua/avante/providers/copilot.lua
index af6374ab1..6c49a39aa 100644
--- a/lua/avante/providers/copilot.lua
+++ b/lua/avante/providers/copilot.lua
@@ -142,7 +142,7 @@ H.generate_headers = function(token, sessionid, machineid)
   return headers
 end
 
-M.API_KEY = P.AVANTE_INTERNAL_KEY
+M.api_key_name = P.AVANTE_INTERNAL_KEY
 
 M.has = function()
   if Utils.has("copilot.lua") or Utils.has("copilot.vim") or H.find_config_path() then
diff --git a/lua/avante/providers/deepseek.lua b/lua/avante/providers/deepseek.lua
index effef50ef..965411342 100644
--- a/lua/avante/providers/deepseek.lua
+++ b/lua/avante/providers/deepseek.lua
@@ -6,10 +6,10 @@ local O = require("avante.providers").openai
 ---@class AvanteProviderFunctor
 local M = {}
 
-M.API_KEY = "DEEPSEEK_API_KEY"
+M.api_key_name = "DEEPSEEK_API_KEY"
 
 M.has = function()
-  return os.getenv(M.API_KEY) and true or false
+  return os.getenv(M.api_key_name) and true or false
 end
 
 M.parse_message = O.parse_message
@@ -22,7 +22,7 @@ M.parse_curl_args = function(provider, code_opts)
     ["Content-Type"] = "application/json",
   }
   if not P.env.is_local("deepseek") then
-    headers["Authorization"] = "Bearer " .. os.getenv(M.API_KEY)
+    headers["Authorization"] = "Bearer " .. os.getenv(base.api_key_name or M.api_key_name)
   end
 
   return {
diff --git a/lua/avante/providers/gemini.lua b/lua/avante/providers/gemini.lua
index 5aee0e6da..58f6df0fc 100644
--- a/lua/avante/providers/gemini.lua
+++ b/lua/avante/providers/gemini.lua
@@ -5,10 +5,10 @@ local P = require("avante.providers")
 ---@class AvanteProviderFunctor
 local M = {}
 
-M.API_KEY = "GROQ_API_KEY"
+M.api_key_name = "GROQ_API_KEY"
 
 M.has = function()
-  return os.getenv(M.API_KEY) and true or false
+  return os.getenv(M.api_key_name) and true or false
 end
 
 M.parse_message = function(opts)
@@ -68,7 +68,7 @@ M.parse_curl_args = function(provider, code_opts)
       .. "/"
       .. base.model
       .. ":streamGenerateContent?alt=sse&key="
-      .. os.getenv(M.API_KEY),
+      .. os.getenv(base.api_key_name or M.api_key_name),
     proxy = base.proxy,
     insecure = base.allow_insecure,
     headers = { ["Content-Type"] = "application/json" },
diff --git a/lua/avante/providers/groq.lua b/lua/avante/providers/groq.lua
index 779d932a7..abf6d5163 100644
--- a/lua/avante/providers/groq.lua
+++ b/lua/avante/providers/groq.lua
@@ -6,10 +6,10 @@ local O = require("avante.providers").openai
 ---@class AvanteProviderFunctor
 local M = {}
 
-M.API_KEY = "GROQ_API_KEY"
+M.api_key_name = "GROQ_API_KEY"
 
 M.has = function()
-  return os.getenv(M.API_KEY) and true or false
+  return os.getenv(M.api_key_name) and true or false
 end
 
 M.parse_message = O.parse_message
@@ -22,7 +22,7 @@ M.parse_curl_args = function(provider, code_opts)
     ["Content-Type"] = "application/json",
   }
   if not P.env.is_local("groq") then
-    headers["Authorization"] = "Bearer " .. os.getenv(M.API_KEY)
+    headers["Authorization"] = "Bearer " .. os.getenv(base.api_key_name or M.api_key_name)
   end
 
   return {
diff --git a/lua/avante/providers/init.lua b/lua/avante/providers/init.lua
index 7523cdfcc..80287c265 100644
--- a/lua/avante/providers/init.lua
+++ b/lua/avante/providers/init.lua
@@ -80,7 +80,7 @@ local Dressing = require("avante.ui.dressing")
 ---@field parse_curl_args AvanteCurlArgsParser
 ---@field setup? fun(): nil
 ---@field has fun(): boolean
----@field API_KEY string
+---@field api_key_name string
 ---@field parse_stream_data? AvanteStreamParser
 ---
 ---@class avante.Providers
@@ -102,13 +102,10 @@ setmetatable(M, {
       local v = Config.vendors[k]
 
       -- Patch from vendors similar to supported providers.
+      ---@type AvanteProviderFunctor
       t[k] = setmetatable({}, { __index = v })
-      t[k].API_KEY = v.api_key_name
       -- Hack for aliasing and makes it sane for us.
       t[k].parse_response = v.parse_response_data
-      t[k].has = function()
-        return os.getenv(v.api_key_name) and true or false
-      end
 
       return t[k]
     end
@@ -130,7 +127,7 @@ E._once = false
 ---@param opts {refresh: boolean, provider: AvanteProviderFunctor}
 ---@private
 E.setup = function(opts)
-  local var = opts.provider.API_KEY
+  local var = opts.provider.api_key_name
 
   if var == M.AVANTE_INTERNAL_KEY then
     return
diff --git a/lua/avante/providers/openai.lua b/lua/avante/providers/openai.lua
index d2a3dc7fe..72e2b76c7 100644
--- a/lua/avante/providers/openai.lua
+++ b/lua/avante/providers/openai.lua
@@ -24,10 +24,10 @@ local P = require("avante.providers")
 ---@class AvanteProviderFunctor
 local M = {}
 
-M.API_KEY = "OPENAI_API_KEY"
+M.api_key_name = "OPENAI_API_KEY"
 
 M.has = function()
-  return os.getenv(M.API_KEY) and true or false
+  return os.getenv(M.api_key_name) and true or false
 end
 
 M.parse_message = function(opts)
@@ -91,7 +91,7 @@ M.parse_curl_args = function(provider, code_opts)
     ["Content-Type"] = "application/json",
   }
   if not P.env.is_local("openai") then
-    headers["Authorization"] = "Bearer " .. os.getenv(M.API_KEY)
+    headers["Authorization"] = "Bearer " .. os.getenv(base.api_key_name or M.api_key_name)
   end
 
   return {