The short version
- Want OpenAI models? Try OpenAI Codex.
- Want Gemini models? Try Google's Antigravity CLI.
- Prefer an editor to a terminal? Try Cursor or GitHub Copilot.
- Want open source and your own choice of model? Try OpenCode, Cline or Aider.
- Want more than one? Use Chief, below, to run Claude Code and other agents together on your projects.
Run several of them together with Chief
Many developers searching for a Claude Code alternative end up keeping Claude Code and adding a second or third agent. Each agent has its own strengths, its own models and its own usage limits, so a mix often gets more done than any single one.
Chief manages your agents so that you can manage the big picture:
- Bring the agents you already use. Chief runs Claude Code, Codex, Gemini through the Antigravity CLI, Qwen Code, OpenCode, Kimi Code, Muse Code and DeepSeek Harness on your own machine, signed in with your own accounts.
- Pick the agent for each job. Set a default agent per project and choose a different one for any milestone.
- Set a goal once. Chief plans the work as milestones with acceptance criteria, dispatches them to your agents and reviews each result against its criteria.
- Turn on Auto mode. Set a task limit and a weekly cap on your provider's usage, and Chief keeps working toward your goals.
- See what needs you. Chief collects the decisions and checks only you can do, so you always know what's next.
Chief has a free plan with no credit card required.
The 10 best Claude Code alternatives
1. OpenAI Codex
Best for: developers who want OpenAI's models and already have a ChatGPT plan.
Codex is OpenAI's coding agent. It runs in your terminal as the open-source Codex CLI, in your editor through an IDE extension, and in the cloud for longer tasks. It signs in with your ChatGPT account, so its usage comes with your plan. Codex is a natural first pick for anyone comparing Claude Code and OpenAI side by side, and it's one of the agents Chief runs. Chief + Codex →
2. Gemini through Google's Antigravity CLI
Best for: developers who want Gemini models under their Google account.
Google's Antigravity CLI (agy) brings Gemini models to your terminal as a coding agent. In 2026 it replaced the Gemini CLI for personal Google accounts, and it shares its agent harness with Google's Antigravity desktop app. Chief runs agy on your machine with your own Google sign-in. Chief + Gemini →
3. Cursor
Best for: developers who want an agent built into a full code editor.
Cursor is a coding agent and AI editor in one. You can hand tasks to agents in the editor, run cloud agents that build and test features for your review, use the Cursor CLI in a terminal and have Bugbot review your pull requests. Cursor offers models from several providers. Chief vs Cursor →
4. GitHub Copilot
Best for: teams that live on GitHub and want an agent in the editor they already use.
GitHub Copilot works in VS Code, JetBrains IDEs and many other editors, with agent mode for multi-step changes and a coding agent you can assign an issue to, which opens a pull request. It offers a choice of models and code review on pull requests. Chief + Copilot →
5. OpenCode
Best for: developers who want an open-source terminal agent and the freedom to choose any provider.
OpenCode is an open-source coding agent for the terminal. It connects to many model providers, including local models, so you can pick the model for each session. Chief can run OpenCode with your own credentials for Anthropic, OpenAI, Google, DeepSeek, Mistral and more. Chief + OpenCode →
6. Cline
Best for: developers who want an open-source agent inside VS Code with full control over each step.
Cline is an open-source coding agent that runs in VS Code, with JetBrains support and a CLI. You bring your own model provider, and Cline shows its plan and each action as it works, so you can approve changes step by step.
7. Aider
Best for: developers who like a terminal pair programmer and a clean git history.
Aider is an open-source AI pair programmer for the terminal. It works with most large language models through your own API keys and commits each change to git with a clear message. Chief + Aider →
8. Qwen Code
Best for: developers who want an open-source agent tuned for Qwen's open-weight models.
Qwen Code is an open-source command-line coding agent from the Qwen team. It's tuned for Qwen's coding models and also works with OpenAI-compatible endpoints. Chief runs it alongside your other agents. Chief + Qwen Code →
9. Kimi Code
Best for: long-context work on large codebases.
Kimi Code is Moonshot AI's coding CLI for Kimi models, built for reading and working across large amounts of code at once. Chief can send the milestones that suit it to Kimi Code. Chief + Kimi →
10. Devin
Best for: teams that want to hand whole tasks to an autonomous engineer.
Devin is Cognition's autonomous AI software engineer. It works in its own cloud environment, takes tasks from its web app, Slack and other tools, and opens pull requests for your review. Cognition also makes Devin Desktop, the AI editor formerly known as Windsurf. Chief vs Devin →
Claude Code alternatives compared
| Tool | What it is | Where you use it | Models | With Chief |
|---|---|---|---|---|
| Chief | Manages your agents toward your goals | Web and mobile; agents run on your machine | The agents and models you bring | ✅ It's Chief |
| Claude Code | Anthropic's coding agent | Terminal, IDEs, desktop and web | Claude models | ✅ Chief runs it |
| OpenAI Codex | OpenAI's coding agent | Terminal, IDE extension and cloud | OpenAI models | ✅ Chief runs it |
| Antigravity CLI | Google's coding agent CLI | Terminal | Gemini models | ✅ Chief runs it |
| Cursor | Coding agent and AI editor | Desktop editor, CLI, web and Slack | Models from several providers | Use it alongside Chief |
| GitHub Copilot | GitHub's AI assistant and coding agent | VS Code, JetBrains and more; GitHub | A choice of models | Use it alongside Chief |
| OpenCode | Open-source terminal agent | Terminal | Many providers, including local | ✅ Chief runs it |
| Cline | Open-source agent | VS Code, JetBrains and CLI | Your choice of provider | Use it alongside Chief |
| Aider | Open-source pair programmer | Terminal | Most LLMs, via your keys | Use it alongside Chief |
| Qwen Code | Open-source coding CLI | Terminal | Qwen models and OpenAI-compatible endpoints | ✅ Chief runs it |
| Kimi Code | Moonshot AI's coding CLI | Terminal | Kimi models | ✅ Chief runs it |
| Devin | Autonomous AI software engineer | Web app, Slack and more | Cognition's agent | Use it alongside Chief |
Looking for a Claude alternative more broadly?
If you're looking for an alternative to Claude models rather than to Claude Code itself, the same agents give you access to most of the leading model families:
- OpenAI through Codex.
- Gemini through the Antigravity CLI.
- Qwen, Kimi and DeepSeek through Qwen Code, Kimi Code and DeepSeek Harness.
- Almost anything else through OpenCode, Cline or Aider with your own API keys.
With Chief you don't have to choose just one. Keep Claude for the work it does best and send other milestones to the agent and model that suit them.
How to choose
- Which models do you want? Pick the agent made by that model's lab, or an open-source agent that lets you choose.
- Terminal or editor? Codex, the Antigravity CLI, OpenCode, Aider, Qwen Code and Kimi Code live in the terminal. Cursor, Copilot and Cline live in your editor.
- How many agents do you want working at once? One agent is easy to drive yourself. When you want several working on your projects at the same time, add Chief to plan the work, dispatch it and review the results.
This guide is published by Chief. Product details were checked in October 2026; check each vendor's site for current features and plans.
FAQ
What is the best alternative to Claude Code?
It depends on what you want to change. OpenAI Codex is the closest like-for-like terminal agent with OpenAI models. Cursor and GitHub Copilot suit developers who prefer an editor. OpenCode, Cline and Aider suit developers who want open source and their own choice of model. Many developers use more than one, and Chief lets you run them together.
Who are Claude Code's main competitors?
The coding agents most often compared with Claude Code are OpenAI Codex, Google's Antigravity CLI for Gemini, Cursor, GitHub Copilot, Cline, OpenCode, Aider and Devin.
What is a good Codex alternative?
Claude Code is the most common pick, and the Antigravity CLI, OpenCode, Qwen Code and Kimi Code are all strong terminal agents too. Chief runs Codex and all of these, so you can keep Codex and add another agent rather than switch.
Is there a free Claude Code alternative?
OpenCode, Cline, Aider and Qwen Code are open source and free to install; you pay your model provider for usage, or run a local model. Several vendors also offer free tiers; check their pricing pages for current limits.
Can I use Claude Code and an alternative at the same time?
Yes. Chief runs Claude Code, Codex, Gemini through the Antigravity CLI, Qwen Code, OpenCode, Kimi Code, Muse Code and DeepSeek Harness on your machine. Set a default agent per project and pick a different one for any milestone.
Does Chief replace Claude Code?
No. Chief manages coding agents; it doesn't replace them. Claude Code still does the coding. Chief plans the work, dispatches it and reviews the results. Chief + Claude Code →