diff --git a/docs/docs/getting-started/setup-options.md b/docs/docs/getting-started/setup-options.md
index 831267b..f878177 100644
--- a/docs/docs/getting-started/setup-options.md
+++ b/docs/docs/getting-started/setup-options.md
@@ -8,6 +8,9 @@ Here is a full example of setting up the Kulala plugin with the `setup` function
 
 ```lua title="setup.lua"
 require("kulala").setup({
+  -- split direction
+  -- possible values: "vertical", "horizontal"
+  split_direction = "vertical",
   -- default_view, body or headers or headers_body
   default_view = "body",
   -- dev, test, prod, can be anything
@@ -68,6 +71,25 @@ require("kulala").setup({
 })
 ```
 
+### split_direction
+
+Split direction.
+
+Possible values:
+
+- `vertical`
+- `horizontal`
+
+Default: `vertical`
+
+Example:
+
+```lua
+require("kulala").setup({
+  split_direction = "horizontal",
+})
+```
+
 ### default_view
 
 Default view.
diff --git a/lua/kulala/config/init.lua b/lua/kulala/config/init.lua
index 0bd5abd..6f5a6a4 100644
--- a/lua/kulala/config/init.lua
+++ b/lua/kulala/config/init.lua
@@ -2,6 +2,9 @@ local FS = require("kulala.utils.fs")
 local M = {}
 
 M.defaults = {
+  -- split direction
+  -- possible values: "vertical", "horizontal"
+  split_direction = "vertical",
   -- default_view, body or headers or headers_body
   default_view = "body",
   -- dev, test, prod, can be anything
diff --git a/lua/kulala/globals/init.lua b/lua/kulala/globals/init.lua
index 768728b..45c5280 100644
--- a/lua/kulala/globals/init.lua
+++ b/lua/kulala/globals/init.lua
@@ -2,7 +2,7 @@ local FS = require("kulala.utils.fs")
 
 local M = {}
 
-M.VERSION = "3.0.3"
+M.VERSION = "3.1.0"
 M.UI_ID = "kulala://ui"
 M.SCRATCHPAD_ID = "kulala://scratchpad"
 M.HEADERS_FILE = FS.get_plugin_tmp_dir() .. "/headers.txt"
diff --git a/lua/kulala/ui/init.lua b/lua/kulala/ui/init.lua
index 7a8f0d2..f85506b 100644
--- a/lua/kulala/ui/init.lua
+++ b/lua/kulala/ui/init.lua
@@ -65,7 +65,7 @@ end
 
 local open_buffer = function()
   local prev_win = vim.api.nvim_get_current_win()
-  vim.cmd("vsplit " .. GLOBALS.UI_ID)
+  vim.cmd(CONFIG.get().split_direction .. " " .. GLOBALS.UI_ID)
   if CONFIG.get().winbar then
     WINBAR.create_winbar(get_win(), get_buffer())
   end