diff --git a/README.md b/README.md
index 42072a5..87d85ac 100644
--- a/README.md
+++ b/README.md
@@ -159,11 +159,16 @@ require("codereview").setup({
   -- AI review
   ai = {
     enabled       = true,
-    provider      = "claude_cli",  -- "claude_cli" | "anthropic" | "openai" | "ollama" | "custom_cmd"
+    provider      = "claude_cli",  -- "claude_cli" | "codex_cli" | "copilot_cli" | "gemini_cli" | "opencode_cli" | "qwen_cli" | "anthropic" | "openai" | "ollama" | "custom_cmd"
     review_level  = "info",        -- "info" | "suggestion" | "warning" | "error"
     max_file_size = 500,           -- skip files larger than N lines (0 = unlimited)
 
     claude_cli = { cmd = "claude", agent = "code-review" },
+    codex_cli = { cmd = "codex", model = nil },
+    copilot_cli = { cmd = "copilot", model = nil, agent = nil },
+    gemini_cli = { cmd = "gemini", model = nil },
+    opencode_cli = { cmd = "opencode", model = nil, agent = "plan", variant = nil },
+    qwen_cli = { cmd = "qwen", model = nil },
     anthropic  = { api_key = nil, model = "claude-sonnet-4-20250514" },
     openai     = { api_key = nil, model = "gpt-4o", base_url = nil },
     ollama     = { model = "llama3", base_url = "http://localhost:11434" },
@@ -185,6 +190,11 @@ Set `ai.provider` to choose a backend. Each provider has its own sub-table:
 | Provider | Config key | Requirements |
 |----------|-----------|--------------|
 | Claude CLI | `claude_cli` | [Claude CLI](https://docs.anthropic.com/en/docs/claude-code) installed |
+| Codex CLI | `codex_cli` | [Codex CLI](https://github.com/openai/codex) installed and authenticated |
+| Copilot CLI | `copilot_cli` | [Copilot CLI](https://docs.github.com/en/copilot/concepts/agents/copilot-cli/about-copilot-cli) installed and authenticated |
+| Gemini CLI | `gemini_cli` | [Gemini CLI](https://github.com/google-gemini/gemini-cli) installed and authenticated |
+| OpenCode CLI | `opencode_cli` | [OpenCode CLI](https://github.com/anomalyco/opencode) installed and authenticated |
+| Qwen CLI | `qwen_cli` | [Qwen CLI](https://github.com/QwenLM/qwen-code) installed and authenticated |
 | Anthropic API | `anthropic` | `api_key` set |
 | OpenAI | `openai` | `api_key` set |
 | Ollama | `ollama` | Ollama running locally |
diff --git a/doc/codereview.txt b/doc/codereview.txt
index ef3e1bd..679ea36 100644
--- a/doc/codereview.txt
+++ b/doc/codereview.txt
@@ -306,7 +306,7 @@ Options for AI review. See |codereview-ai-review|.
       -- boolean  enable AI review features
       enabled = true,
 
-      -- "claude_cli" | "anthropic" | "openai" | "ollama" | "custom_cmd"
+      -- "claude_cli" | "codex_cli" | "copilot_cli" | "gemini_cli" | "opencode_cli" | "qwen_cli" | "anthropic" | "openai" | "ollama" | "custom_cmd"
       provider = "claude_cli",
 
       -- "info" | "suggestion" | "warning" | "error"  minimum severity to display
@@ -321,6 +321,29 @@ Options for AI review. See |codereview-ai-review|.
         cmd   = "claude",       -- path or name of the claude binary
         agent = "code-review",  -- Claude agent/profile name
       },
+      codex_cli = {
+        cmd   = "codex",        -- path or name of the codex binary
+        model = nil,            -- optional model override
+      },
+      copilot_cli = {
+        cmd = "copilot",        -- path or name of the copilot binary
+        model = nil,            -- optional model override
+        agent = nil,            -- optional agent override
+      },
+      gemini_cli = {
+        cmd = "gemini",         -- path or name of the gemini binary
+        model = nil,            -- optional model override
+      },
+      opencode_cli = {
+        cmd = "opencode",       -- path or name of the opencode binary
+        model = nil,            -- optional model override
+        agent = "plan",         -- optional agent override
+        variant = nil,          -- optional model variant (provider-specific)
+      },
+      qwen_cli = {
+        cmd = "qwen",           -- path or name of the qwen binary
+        model = nil,            -- optional model override
+      },
       anthropic = {
         api_key = nil,                         -- falls back to ANTHROPIC_API_KEY
         model   = "claude-sonnet-4-20250514",
@@ -380,6 +403,104 @@ Requirements:
   }
 <
 
+------------------------------------------------------------------------------
+Codex CLI                                            *codereview-ai-codex-cli*
+
+Uses the `codex exec` command-line interface to prompt non-interactively using
+the currently configured or default model until explicitly specified.
+
+Requirements:
+  - `codex` binary installed and on PATH
+  - Codex CLI already authenticated
+>lua
+  ai = {
+    provider = "codex_cli",
+    codex_cli = {
+      cmd   = "codex",    -- binary name or full path
+      model = "gpt-5.4",  -- optional model override
+    },
+  }
+<
+
+------------------------------------------------------------------------------
+Copilot CLI                                        *codereview-ai-copilot-cli*
+
+Uses the `copilot` command-line interface to prompt non-interactively using
+the currently configured or default model until explicitly specified.
+
+Requirements:
+  - `copilot` binary installed and on PATH
+  - Copilot CLI already authenticated
+>lua
+  ai = {
+    provider = "copilot_cli",
+    copilot_cli = {
+      cmd   = "copilot",           -- binary name or full path
+      model = "claude-opus-4.6",   -- optional model override
+      agent = nil                  -- specify a custom agent to use
+    },
+  }
+<
+
+------------------------------------------------------------------------------
+Gemini CLI                                          *codereview-ai-gemini-cli*
+
+Uses the `gemini` command-line interface to prompt non-interactively using
+the currently configured or default model until explicitly specified.
+
+Requirements:
+  - `gemini` binary installed and on PATH
+  - Gemini CLI already authenticated
+>lua
+  ai = {
+    provider = "gemini_cli",
+    gemini_cli = {
+      cmd   = "gemini",            -- binary name or full path
+      model = "gemini-3-pro",      -- optional model override
+    },
+  }
+<
+
+------------------------------------------------------------------------------
+OpenCode CLI                                      *codereview-ai-opencode-cli*
+
+Uses the `opencode run` command-line interface to prompt non-interactively using
+the currently configured or default model until explicitly specified.
+
+Requirements:
+  - `opencode` binary installed and on PATH
+  - OpenCode CLI already authenticated
+>lua
+  ai = {
+    provider = "opencode_cli",
+    opencode_cli = {
+      cmd   = "opencode",                          -- binary name or full path
+      model = "github-copilot/claude-sonnet-4.6",  -- optional provider/model
+      agent = "plan",                              -- optional agent to use
+      variant = nil,                               -- model variant
+    },
+  }
+<
+
+------------------------------------------------------------------------------
+Qwen CLI                                              *codereview-ai-qwen-cli*
+
+Uses the `qwen` command-line interface to prompt non-interactively using
+the currently configured or default model until explicitly specified.
+
+Requirements:
+  - `qwen` binary installed and on PATH
+  - Qwen CLI already authenticated
+>lua
+  ai = {
+    provider = "qwen_cli",
+    qwen_cli = {
+      cmd   = "qwen",               -- binary name or full path
+      model = "qwen3-coder-plus",   -- optional model override
+    },
+  }
+<
+
 ------------------------------------------------------------------------------
 Anthropic API                                      *codereview-ai-anthropic*
 
diff --git a/lua/codereview/ai/providers/claude_cli.lua b/lua/codereview/ai/providers/claude_cli.lua
index 8552bad..bf20a6b 100644
--- a/lua/codereview/ai/providers/claude_cli.lua
+++ b/lua/codereview/ai/providers/claude_cli.lua
@@ -1,5 +1,5 @@
 local config = require("codereview.config")
-local log = require("codereview.log")
+local utils = require("codereview.ai.providers.utils")
 local M = {}
 
 function M.build_cmd(claude_cmd, agent)
@@ -23,71 +23,7 @@ function M.run(prompt, callback, opts)
   local claude_cmd = pcfg.cmd or cfg.ai.claude_cmd or "claude"
   local agent = (not opts.skip_agent) and (pcfg.agent or cfg.ai.agent) or nil
   local cmd = M.build_cmd(claude_cmd, agent)
-  log.debug("AI claude_cli: starting " .. table.concat(cmd, " "))
-  local stdout_chunks = {}
-  local stderr_chunks = {}
-  local done = false
-
-  local job_id = vim.fn.jobstart(cmd, {
-    stdout_buffered = true,
-    stderr_buffered = true,
-    on_stdout = function(_, data)
-      if data then
-        for i, chunk in ipairs(data) do
-          if i < #data or chunk ~= "" then
-            table.insert(stdout_chunks, chunk)
-          end
-        end
-      end
-    end,
-    on_stderr = function(_, data)
-      if data then
-        for i, chunk in ipairs(data) do
-          if i < #data or chunk ~= "" then
-            table.insert(stderr_chunks, chunk)
-          end
-        end
-      end
-    end,
-    on_exit = function(_, code)
-      if done then
-        return
-      end
-      done = true
-      vim.schedule(function()
-        local stderr_str = table.concat(stderr_chunks, "\n")
-        if stderr_str ~= "" then
-          log.warn("AI claude_cli stderr: " .. stderr_str)
-        end
-        local output = table.concat(stdout_chunks, "\n")
-        if code ~= 0 then
-          local msg = "Claude CLI exited with code " .. code
-          if output ~= "" then
-            msg = msg .. "\n" .. output
-          end
-          if stderr_str ~= "" then
-            msg = msg .. "\n" .. stderr_str
-          end
-          log.error("AI claude_cli: " .. msg)
-          callback(nil, msg)
-        else
-          log.debug("AI claude_cli: completed, output length=" .. #output)
-          callback(output)
-        end
-      end)
-    end,
-  })
-
-  if job_id <= 0 then
-    local msg = "Failed to start Claude CLI. Is '" .. claude_cmd .. "' in your PATH?"
-    log.error("AI claude_cli: " .. msg)
-    callback(nil, msg)
-    return
-  end
-
-  vim.fn.chansend(job_id, prompt)
-  vim.fn.chanclose(job_id, "stdin")
-  return job_id
+  return utils.run_cli(prompt, callback, cmd)
 end
 
 return M
diff --git a/lua/codereview/ai/providers/codex_cli.lua b/lua/codereview/ai/providers/codex_cli.lua
new file mode 100644
index 0000000..5a6deb0
--- /dev/null
+++ b/lua/codereview/ai/providers/codex_cli.lua
@@ -0,0 +1,28 @@
+local config = require("codereview.config")
+local utils = require("codereview.ai.providers.utils")
+local M = {}
+
+function M.build_cmd(codex_cmd, model)
+  local cmd = { codex_cmd or "codex", "exec" }
+  table.insert(cmd, "--sandbox=read-only")
+  if model and model ~= "" then
+    table.insert(cmd, "--model")
+    table.insert(cmd, model)
+  end
+  table.insert(cmd, "--")
+  return cmd
+end
+
+function M.run(prompt, callback)
+  local cfg = config.get()
+  if not cfg.ai.enabled then
+    callback(nil, "AI review is disabled in config")
+    return
+  end
+
+  local pcfg = cfg.ai.codex_cli or {}
+  local cmd = M.build_cmd(pcfg.cmd, pcfg.model)
+  return utils.run_cli(prompt, callback, cmd)
+end
+
+return M
diff --git a/lua/codereview/ai/providers/copilot_cli.lua b/lua/codereview/ai/providers/copilot_cli.lua
new file mode 100644
index 0000000..5910df1
--- /dev/null
+++ b/lua/codereview/ai/providers/copilot_cli.lua
@@ -0,0 +1,32 @@
+local config = require("codereview.config")
+local utils = require("codereview.ai.providers.utils")
+local M = {}
+
+function M.build_cmd(copilot_cmd, model, agent)
+  local cmd = { copilot_cmd or "copilot" }
+  table.insert(cmd, "--silent")
+  table.insert(cmd, "--no-auto-update")
+  if model and model ~= "" then
+    table.insert(cmd, "--model")
+    table.insert(cmd, model)
+  end
+  if agent and agent ~= "" then
+    table.insert(cmd, "--agent")
+    table.insert(cmd, agent)
+  end
+  return cmd
+end
+
+function M.run(prompt, callback)
+  local cfg = config.get()
+  if not cfg.ai.enabled then
+    callback(nil, "AI review is disabled in config")
+    return
+  end
+
+  local pcfg = cfg.ai.copilot_cli or {}
+  local cmd = M.build_cmd(pcfg.cmd, pcfg.model, pcfg.agent)
+  return utils.run_cli(prompt, callback, cmd)
+end
+
+return M
diff --git a/lua/codereview/ai/providers/custom_cmd.lua b/lua/codereview/ai/providers/custom_cmd.lua
index 0e0dc72..8be5df8 100644
--- a/lua/codereview/ai/providers/custom_cmd.lua
+++ b/lua/codereview/ai/providers/custom_cmd.lua
@@ -1,5 +1,5 @@
 local config = require("codereview.config")
-local log = require("codereview.log")
+local utils = require("codereview.ai.providers.utils")
 local M = {}
 
 function M.build_cmd(cmd, args)
@@ -10,7 +10,7 @@ function M.build_cmd(cmd, args)
   return t
 end
 
-function M.run(prompt, callback, opts)
+function M.run(prompt, callback)
   local cfg = config.get()
   if not cfg.ai.enabled then
     callback(nil, "AI review is disabled in config")
@@ -24,71 +24,7 @@ function M.run(prompt, callback, opts)
   end
 
   local cmd = M.build_cmd(pcfg.cmd, pcfg.args)
-  log.debug("AI custom_cmd: starting " .. table.concat(cmd, " "))
-  local stdout_chunks = {}
-  local stderr_chunks = {}
-  local done = false
-
-  local job_id = vim.fn.jobstart(cmd, {
-    stdout_buffered = true,
-    stderr_buffered = true,
-    on_stdout = function(_, data)
-      if data then
-        for i, chunk in ipairs(data) do
-          if i < #data or chunk ~= "" then
-            table.insert(stdout_chunks, chunk)
-          end
-        end
-      end
-    end,
-    on_stderr = function(_, data)
-      if data then
-        for i, chunk in ipairs(data) do
-          if i < #data or chunk ~= "" then
-            table.insert(stderr_chunks, chunk)
-          end
-        end
-      end
-    end,
-    on_exit = function(_, code)
-      if done then
-        return
-      end
-      done = true
-      vim.schedule(function()
-        local stderr_str = table.concat(stderr_chunks, "\n")
-        if stderr_str ~= "" then
-          log.warn("AI custom_cmd stderr: " .. stderr_str)
-        end
-        local output = table.concat(stdout_chunks, "\n")
-        if code ~= 0 then
-          local msg = "Custom command exited with code " .. code
-          if output ~= "" then
-            msg = msg .. "\n" .. output
-          end
-          if stderr_str ~= "" then
-            msg = msg .. "\n" .. stderr_str
-          end
-          log.error("AI custom_cmd: " .. msg)
-          callback(nil, msg)
-        else
-          log.debug("AI custom_cmd: completed, output length=" .. #output)
-          callback(output)
-        end
-      end)
-    end,
-  })
-
-  if job_id <= 0 then
-    local msg = "Failed to start '" .. pcfg.cmd .. "'. Is it in your PATH?"
-    log.error("AI custom_cmd: " .. msg)
-    callback(nil, msg)
-    return
-  end
-
-  vim.fn.chansend(job_id, prompt)
-  vim.fn.chanclose(job_id, "stdin")
-  return job_id
+  return utils.run_cli(prompt, callback, cmd)
 end
 
 return M
diff --git a/lua/codereview/ai/providers/gemini_cli.lua b/lua/codereview/ai/providers/gemini_cli.lua
new file mode 100644
index 0000000..beffe03
--- /dev/null
+++ b/lua/codereview/ai/providers/gemini_cli.lua
@@ -0,0 +1,27 @@
+local config = require("codereview.config")
+local utils = require("codereview.ai.providers.utils")
+local M = {}
+
+function M.build_cmd(gemini_cmd, model)
+  local cmd = { gemini_cmd or "gemini" }
+  table.insert(cmd, "--approval-mode=plan")
+  if model and model ~= "" then
+    table.insert(cmd, "--model")
+    table.insert(cmd, model)
+  end
+  return cmd
+end
+
+function M.run(prompt, callback)
+  local cfg = config.get()
+  if not cfg.ai.enabled then
+    callback(nil, "AI review is disabled in config")
+    return
+  end
+
+  local pcfg = cfg.ai.gemini_cli or {}
+  local cmd = M.build_cmd(pcfg.cmd, pcfg.model)
+  return utils.run_cli(prompt, callback, cmd)
+end
+
+return M
diff --git a/lua/codereview/ai/providers/init.lua b/lua/codereview/ai/providers/init.lua
index 14307d3..5d25930 100644
--- a/lua/codereview/ai/providers/init.lua
+++ b/lua/codereview/ai/providers/init.lua
@@ -2,6 +2,11 @@ local M = {}
 
 local valid_providers = {
   claude_cli = "codereview.ai.providers.claude_cli",
+  codex_cli = "codereview.ai.providers.codex_cli",
+  copilot_cli = "codereview.ai.providers.copilot_cli",
+  gemini_cli = "codereview.ai.providers.gemini_cli",
+  opencode_cli = "codereview.ai.providers.opencode_cli",
+  qwen_cli = "codereview.ai.providers.qwen_cli",
   anthropic = "codereview.ai.providers.anthropic",
   openai = "codereview.ai.providers.openai",
   ollama = "codereview.ai.providers.ollama",
diff --git a/lua/codereview/ai/providers/opencode_cli.lua b/lua/codereview/ai/providers/opencode_cli.lua
new file mode 100644
index 0000000..f322d7b
--- /dev/null
+++ b/lua/codereview/ai/providers/opencode_cli.lua
@@ -0,0 +1,35 @@
+local config = require("codereview.config")
+local utils = require("codereview.ai.providers.utils")
+local M = {}
+
+function M.build_cmd(opencode_cmd, model, agent, variant)
+  local cmd = { opencode_cmd or "opencode", "run" }
+  if model and model ~= "" then
+    table.insert(cmd, "--model")
+    table.insert(cmd, model)
+  end
+  if agent and agent ~= "" then
+    table.insert(cmd, "--agent")
+    table.insert(cmd, agent)
+  end
+  if variant and variant ~= "" then
+    table.insert(cmd, "--variant")
+    table.insert(cmd, variant)
+  end
+  table.insert(cmd, "--")
+  return cmd
+end
+
+function M.run(prompt, callback)
+  local cfg = config.get()
+  if not cfg.ai.enabled then
+    callback(nil, "AI review is disabled in config")
+    return
+  end
+
+  local pcfg = cfg.ai.opencode_cli or {}
+  local cmd = M.build_cmd(pcfg.cmd, pcfg.model, pcfg.agent, pcfg.variant)
+  return utils.run_cli(prompt, callback, cmd)
+end
+
+return M
diff --git a/lua/codereview/ai/providers/qwen_cli.lua b/lua/codereview/ai/providers/qwen_cli.lua
new file mode 100644
index 0000000..5b67aea
--- /dev/null
+++ b/lua/codereview/ai/providers/qwen_cli.lua
@@ -0,0 +1,27 @@
+local config = require("codereview.config")
+local utils = require("codereview.ai.providers.utils")
+local M = {}
+
+function M.build_cmd(qwen_cmd, model)
+  local cmd = { qwen_cmd or "qwen" }
+  table.insert(cmd, "--approval-mode=plan")
+  if model then
+    table.insert(cmd, "--model")
+    table.insert(cmd, model)
+  end
+  return cmd
+end
+
+function M.run(prompt, callback)
+  local cfg = config.get()
+  if not cfg.ai.enabled then
+    callback(nil, "AI review is disabled in config")
+    return
+  end
+
+  local pcfg = cfg.ai.qwen_cli or {}
+  local cmd = M.build_cmd(pcfg.cmd, pcfg.model)
+  return utils.run_cli(prompt, callback, cmd)
+end
+
+return M
diff --git a/lua/codereview/ai/providers/utils.lua b/lua/codereview/ai/providers/utils.lua
new file mode 100644
index 0000000..7f549fc
--- /dev/null
+++ b/lua/codereview/ai/providers/utils.lua
@@ -0,0 +1,77 @@
+local log = require("codereview.log")
+local M = {}
+
+---Run a CLI command asynchronously, sending the prompt via stdin and collecting output.
+---@param prompt string|string[] prompt that will be passed to the AI
+---@param callback fun(string?, string?) callback that takes either the AI output as first argument or an error message as second argument.
+---@param cmd string[] command to execute that consumes the prompt input to produce an output passed to the callback.
+---@return integer Returns |job-id| on success, 0 on invalid arguments (or job table is full), -1 if {cmd}[0] or 'shell' is not executable.
+function M.run_cli(prompt, callback, cmd)
+  log.debug("AI cmd: starting " .. table.concat(cmd, " "))
+  local stdout_chunks = {}
+  local stderr_chunks = {}
+  local done = false
+
+  local job_id = vim.fn.jobstart(cmd, {
+    stdout_buffered = true,
+    stderr_buffered = true,
+    on_stdout = function(_, data)
+      if data then
+        for i, chunk in ipairs(data) do
+          if i < #data or chunk ~= "" then
+            table.insert(stdout_chunks, chunk)
+          end
+        end
+      end
+    end,
+    on_stderr = function(_, data)
+      if data then
+        for i, chunk in ipairs(data) do
+          if i < #data or chunk ~= "" then
+            table.insert(stderr_chunks, chunk)
+          end
+        end
+      end
+    end,
+    on_exit = function(_, code)
+      if done then
+        return
+      end
+      done = true
+      vim.schedule(function()
+        local stderr_str = table.concat(stderr_chunks, "\n")
+        if stderr_str ~= "" then
+          log.warn("AI cmd stderr: " .. stderr_str)
+        end
+        local output = table.concat(stdout_chunks, "\n")
+        if code ~= 0 then
+          local msg = "Command exited with code " .. code
+          if output ~= "" then
+            msg = msg .. "\n" .. output
+          end
+          if stderr_str ~= "" then
+            msg = msg .. "\n" .. stderr_str
+          end
+          log.error("AI cmd: " .. msg)
+          callback(nil, msg)
+        else
+          log.debug("AI cmd: completed, output length=" .. #output)
+          callback(output)
+        end
+      end)
+    end,
+  })
+
+  if job_id <= 0 then
+    local msg = "Failed to start '" .. table.concat(cmd, " ") .. "'. Is it in your PATH?"
+    log.error("AI cmd: " .. msg)
+    callback(nil, msg)
+    return job_id
+  end
+
+  vim.fn.chansend(job_id, prompt)
+  vim.fn.chanclose(job_id, "stdin")
+  return job_id
+end
+
+return M
diff --git a/lua/codereview/config.lua b/lua/codereview/config.lua
index 242d2b9..3b7b0ff 100644
--- a/lua/codereview/config.lua
+++ b/lua/codereview/config.lua
@@ -27,19 +27,47 @@
 
 ---@class codereview.config.AI
 ---@field enabled? boolean enable AI Review (default: `true`)
----@field provider? "claude_cli"|"anthropic"|"openai"|"ollama"|"custom_cmd" AI Provider to use
+---@field provider? "claude_cli"|"codex_cli"|"copilot_cli"|"gemini_cli"|"opencode_cli"|"qwen_cli"|"anthropic"|"openai"|"ollama"|"custom_cmd" AI Provider to use
 ---@field review_level? "info"|"suggestion"|"warning"|"error" controls the verbosity of AI code reviews (default: `info`)
 ---@field max_file_size? integer skip files larger than N lines (0 = unlimited) (default: 500)
----@field claude_cli? codereview.config.ai.ClaudeCli Claude CLI options
+---@field claude_cli? codereview.config.ai.ClaudeCLI Claude CLI options
+---@field codex_cli? codereview.config.ai.CodexCLI Codex CLI options
+---@field copilot_cli? codereview.config.ai.CopilotCLI Copilot CLI options
+---@field gemini_cli? codereview.config.ai.GeminiCLI Gemini CLI options
+---@field opencode_cli? codereview.config.ai.OpenCodeCLI OpenCode CLI options
+---@field qwen_cli? codereview.config.ai.QwenCLI Qwen CLI options
 ---@field anthropic? codereview.config.ai.Anthropic Anthropic API options
 ---@field openai? codereview.config.ai.OpenAI OpenAI API options
 ---@field ollama? codereview.config.ai.Ollama Ollama options
 ---@field custom_cmd? codereview.config.ai.CustomCmd Custom command options
 
----@class codereview.config.ai.ClaudeCli
----@field cmd? string Claude CLI command (default: `claude_cli`)
+---@class codereview.config.ai.ClaudeCLI
+---@field cmd? string Claude CLI command (default: `claude`)
 ---@field agent? string Claude Agent (default: `code-review`)
 
+---@class codereview.config.ai.CodexCLI
+---@field cmd? string Codex CLI command (default: `codex`)
+---@field model? string Codex model name
+
+---@class codereview.config.ai.CopilotCLI
+---@field cmd? string Copilot CLI command (default: `copilot`)
+---@field model? string Copilot model name
+---@field agent? string specify a custom agent to use
+
+---@class codereview.config.ai.GeminiCLI
+---@field cmd? string Gemini CLI command (default: `gemini`)
+---@field model? string Gemini model name
+
+---@class codereview.config.ai.OpenCodeCLI
+---@field cmd? string OpenCode CLI command (default: `opencode`)
+---@field model? string model to use in the form of provider/model
+---@field agent? string agent to use (default: `plan`)
+---@field variant? string model variant (provider-specific reasoning effort, e.g., high, max, minimal)
+
+---@class codereview.config.ai.QwenCLI
+---@field cmd? string Qwen CLI command (default: `qwen`)
+---@field model? string Qwen model name
+
 ---@class codereview.config.ai.Anthropic
 ---@field api_key? string Anthropic API key
 ---@field model? string Anthropic model name
@@ -77,6 +105,11 @@ local defaults = {
     review_level = "info",
     max_file_size = 500,
     claude_cli = { cmd = "claude", agent = "code-review" },
+    codex_cli = { cmd = "codex", model = nil },
+    copilot_cli = { cmd = "copilot", model = nil, agent = nil },
+    gemini_cli = { cmd = "gemini", model = nil },
+    opencode_cli = { cmd = "opencode", model = nil, agent = "plan", variant = nil },
+    qwen_cli = { cmd = "qwen", model = nil },
     anthropic = { api_key = nil, model = "claude-sonnet-4-20250514" },
     openai = { api_key = nil, model = "gpt-4o", base_url = nil },
     ollama = { model = "llama3", base_url = "http://localhost:11434" },
@@ -112,7 +145,18 @@ local function validate(c)
     c.ai.review_level = "info"
   end
   c.ai.max_file_size = math.max(0, c.ai.max_file_size or 500)
-  local valid_providers = { claude_cli = true, anthropic = true, openai = true, ollama = true, custom_cmd = true }
+  local valid_providers = {
+    claude_cli = true,
+    codex_cli = true,
+    copilot_cli = true,
+    gemini_cli = true,
+    opencode_cli = true,
+    qwen_cli = true,
+    anthropic = true,
+    openai = true,
+    ollama = true,
+    custom_cmd = true,
+  }
   if not valid_providers[c.ai.provider] then
     c.ai.provider = "claude_cli"
   end
diff --git a/tests/codereview/ai/providers/codex_cli_spec.lua b/tests/codereview/ai/providers/codex_cli_spec.lua
new file mode 100644
index 0000000..433964a
--- /dev/null
+++ b/tests/codereview/ai/providers/codex_cli_spec.lua
@@ -0,0 +1,22 @@
+package.loaded["codereview.config"] = {
+  get = function()
+    return { ai = { enabled = true, provider = "codex_cli", codex_cli = { cmd = "codex", model = nil } } }
+  end,
+}
+package.loaded["codereview.log"] = { debug = function() end, warn = function() end, error = function() end }
+
+local codex_cli = require("codereview.ai.providers.codex_cli")
+
+describe("ai.providers.codex_cli", function()
+  describe("build_cmd", function()
+    it("builds default codex command", function()
+      assert.same({ "codex", "exec", "--sandbox=read-only", "--" }, codex_cli.build_cmd("codex"))
+    end)
+    it("includes model flag when provided", function()
+      assert.same(
+        { "codex", "exec", "--sandbox=read-only", "--model", "model", "--" },
+        codex_cli.build_cmd("codex", "model")
+      )
+    end)
+  end)
+end)
diff --git a/tests/codereview/ai/providers/copilot_cli_spec.lua b/tests/codereview/ai/providers/copilot_cli_spec.lua
new file mode 100644
index 0000000..40cd262
--- /dev/null
+++ b/tests/codereview/ai/providers/copilot_cli_spec.lua
@@ -0,0 +1,30 @@
+package.loaded["codereview.config"] = {
+  get = function()
+    return {
+      ai = { enabled = true, provider = "copilot_cli", copilot_cli = { cmd = "copilot", model = nil, agent = nil } },
+    }
+  end,
+}
+package.loaded["codereview.log"] = { debug = function() end, warn = function() end, error = function() end }
+
+local copilot_cli = require("codereview.ai.providers.copilot_cli")
+
+describe("ai.providers.copilot_cli", function()
+  describe("build_cmd", function()
+    it("builds default copilot command", function()
+      assert.same({ "copilot", "--silent", "--no-auto-update" }, copilot_cli.build_cmd("copilot"))
+    end)
+    it("includes model flag when provided", function()
+      assert.same(
+        { "copilot", "--silent", "--no-auto-update", "--model", "model" },
+        copilot_cli.build_cmd("copilot", "model")
+      )
+    end)
+    it("includes agent flag when provided", function()
+      assert.same(
+        { "copilot", "--silent", "--no-auto-update", "--agent", "agent" },
+        copilot_cli.build_cmd("copilot", nil, "agent")
+      )
+    end)
+  end)
+end)
diff --git a/tests/codereview/ai/providers/gemini_cli_spec.lua b/tests/codereview/ai/providers/gemini_cli_spec.lua
new file mode 100644
index 0000000..03a99b3
--- /dev/null
+++ b/tests/codereview/ai/providers/gemini_cli_spec.lua
@@ -0,0 +1,21 @@
+package.loaded["codereview.config"] = {
+  get = function()
+    return {
+      ai = { enabled = true, provider = "gemini_cli", gemini_cli = { cmd = "gemini", model = nil } },
+    }
+  end,
+}
+package.loaded["codereview.log"] = { debug = function() end, warn = function() end, error = function() end }
+
+local gemini_cli = require("codereview.ai.providers.gemini_cli")
+
+describe("ai.providers.gemini_cli", function()
+  describe("build_cmd", function()
+    it("builds default gemini command", function()
+      assert.same({ "gemini", "--approval-mode=plan" }, gemini_cli.build_cmd("gemini"))
+    end)
+    it("includes model flag when provided", function()
+      assert.same({ "gemini", "--approval-mode=plan", "--model", "model" }, gemini_cli.build_cmd("gemini", "model"))
+    end)
+  end)
+end)
diff --git a/tests/codereview/ai/providers/opencode_cli_spec.lua b/tests/codereview/ai/providers/opencode_cli_spec.lua
new file mode 100644
index 0000000..b2a9f42
--- /dev/null
+++ b/tests/codereview/ai/providers/opencode_cli_spec.lua
@@ -0,0 +1,34 @@
+package.loaded["codereview.config"] = {
+  get = function()
+    return {
+      ai = {
+        enabled = true,
+        provider = "opencode_cli",
+        opencode_cli = { cmd = "opencode", model = nil, agent = "plan", variant = nil },
+      },
+    }
+  end,
+}
+package.loaded["codereview.log"] = { debug = function() end, warn = function() end, error = function() end }
+
+local opencode_cli = require("codereview.ai.providers.opencode_cli")
+
+describe("ai.providers.opencode_cli", function()
+  describe("build_cmd", function()
+    it("builds default opencode command", function()
+      assert.same({ "opencode", "run", "--" }, opencode_cli.build_cmd("opencode"))
+    end)
+    it("includes model flag when provided", function()
+      assert.same({ "opencode", "run", "--model", "model", "--" }, opencode_cli.build_cmd("opencode", "model"))
+    end)
+    it("includes agent flag when provided", function()
+      assert.same({ "opencode", "run", "--agent", "agent", "--" }, opencode_cli.build_cmd("opencode", nil, "agent"))
+    end)
+    it("includes variant flag when provided", function()
+      assert.same(
+        { "opencode", "run", "--variant", "variant", "--" },
+        opencode_cli.build_cmd("opencode", nil, nil, "variant")
+      )
+    end)
+  end)
+end)
diff --git a/tests/codereview/ai/providers/qwen_cli_spec.lua b/tests/codereview/ai/providers/qwen_cli_spec.lua
new file mode 100644
index 0000000..af4ff45
--- /dev/null
+++ b/tests/codereview/ai/providers/qwen_cli_spec.lua
@@ -0,0 +1,21 @@
+package.loaded["codereview.config"] = {
+  get = function()
+    return {
+      ai = { enabled = true, provider = "qwen_cli", qwen_cli = { cmd = "qwen", model = nil } },
+    }
+  end,
+}
+package.loaded["codereview.log"] = { debug = function() end, warn = function() end, error = function() end }
+
+local qwen_cli = require("codereview.ai.providers.qwen_cli")
+
+describe("ai.providers.qwen_cli", function()
+  describe("build_cmd", function()
+    it("builds default qwen command", function()
+      assert.same({ "qwen", "--approval-mode=plan" }, qwen_cli.build_cmd("qwen"))
+    end)
+    it("includes model flag when provided", function()
+      assert.same({ "qwen", "--approval-mode=plan", "--model", "model" }, qwen_cli.build_cmd("qwen", "model"))
+    end)
+  end)
+end)