Claude Code Alternatives: 7 Coding Agents Compared

2026-11-13

Claude Code alternatives are other agents that read a codebase, edit files and run commands for you. Seven are compared here: Aider, Cline, Codex CLI, OpenCode, Gemini CLI, OpenHands and POLYROB. They differ in where they run (terminal, editor, desktop or chat app), which models they accept and how much they can do without asking.

Claude Code is Anthropic’s agentic coding tool. Its docs say it “reads your codebase, edits files, runs commands, and integrates with your development tools” and is available in a terminal, an IDE, a desktop app and a browser (Claude Code overview, checked 2026-11-13). If OpenClaw is the tool you are weighing against it, read OpenClaw vs Claude Code. People look elsewhere for practical reasons: a different model vendor, an open-source licence, a different editor, or an agent that also does non-coding work. Every fact about a tool other than POLYROB comes from that tool’s own public page, fetched on 2026-11-13, and is linked beside it. These projects ship often, so check the linked page before you commit.

One thing to know first, because it shapes the list: POLYROB is not a coding-only tool. It is a self-hosted personal agent, and its coding tools are one part. Its coding tool has nine actions (str_replace, apply_patch, grep, run_tests, create_file, move_file, delete_file, snapshots, restore) and it snapshots a file before each edit so you can restore it (tools/coding/[email protected], tools/coding/[email protected]).

How do the Claude Code alternatives compare at a glance?

All rows were checked on 2026-11-13. “Not stated” means the page we read does not say, not that the feature is missing.

Tool	Where it runs	Licence (own page)	Models (own page)	Notable
Aider	Terminal	Not stated in the README	Almost any LLM, including local models	Maps your codebase, auto-commits to git
Cline	VS Code, JetBrains, CLI, desktop app	Apache 2.0	Not stated in the README	Checkpoints, approval before actions, headless CLI for CI
Codex CLI	Terminal, IDE, desktop app	Apache-2.0	ChatGPT plan sign-in or an API key	OpenAI’s local coding agent
OpenCode	Terminal, desktop app (beta)	Not stated in the README	Not stated in the README	Read-only “plan” agent beside the “build” agent
Gemini CLI	Terminal	Apache 2.0	Gemini	README now points free and Google AI plan users to Antigravity CLI
OpenHands	Local, Docker, VM or cloud backends	Not stated in the README	Any LLM	Runs other agents too, with scheduled automations
POLYROB	Terminal, web console, 8 chat apps	MIT	Any model: OpenAI, Anthropic, Gemini, DeepSeek, OpenRouter, NVIDIA NIM, any compatible endpoint	General agent with goals, jobs and an approval queue

Sources: Aider, Cline, Codex CLI, OpenCode, Gemini CLI, OpenHands READMEs, fetched 2026-11-13. POLYROB: [email protected].

Which Claude Code alternative is best for pair programming in the terminal?

Aider is the closest match if you want a terminal pair programmer and the freedom to pick your model. Its README says it “can connect to almost any LLM, including local models”, builds a map of your whole codebase, and “automatically commits changes with sensible commit messages”, so you can diff and undo its work with ordinary git tools. It can also lint and test after each change and fix what the linters and tests report (Aider README, 2026-11-13). Install is python -m pip install aider-install, then aider-install.

Codex CLI is OpenAI’s equivalent. Its README calls it “a coding agent from OpenAI that runs locally on your computer”, licensed Apache-2.0, installed with a shell script, npm or Homebrew. You sign in with a ChatGPT plan or use an API key (Codex CLI README, 2026-11-13).

OpenCode describes itself as “the open source AI coding agent”. It ships two built-in agents you switch between with Tab: “build”, a full-access agent, and “plan”, a read-only agent that denies file edits by default and asks before running bash commands (OpenCode README, 2026-11-13). The plan agent is a useful way to explore code you do not know yet.

Which alternative works inside my editor?

Cline is the editor-first option. Its README lists a VS Code extension, a JetBrains plugin, a CLI, a native desktop app for macOS and Windows, and an SDK. In the editor, each edit shows as a diff you can review, modify or revert, and changes are tracked with checkpoints. The CLI can run “fully headless for CI/CD and scripting”. It is Apache 2.0 licensed (Cline README, 2026-11-13).

If your editor is your main tool, this is where POLYROB is weakest. Its own comparison doc lists editor integration over ACP as a gap (docs/[email protected]).

What if I want to stay with Google or run many agents?

Gemini CLI carries a notice at the top of its README. As fetched on 2026-11-13, it says the tool is designed for Gemini Code Assist Standard and Enterprise licences, and that free individual access and Google AI Pro and Ultra plans “moved to Antigravity CLI on June 18, 2026” (Gemini CLI README). Read that notice before you install it on a personal account.

OpenHands has repositioned. Its README now describes “Agent Canvas”, a self-hosted control centre that runs the OpenHands agent or third-party agents such as Claude Code, Codex, Gemini CLI and OpenCode, locally, in Docker, on VMs or on OpenHands Cloud. It can run automations on a schedule or in response to webhooks and connect them to Slack, GitHub and Linear (OpenHands README, 2026-11-13). It is closer to a manager of coding agents than a replacement for one. The README also warns that running without a sandbox gives the agent “full access to your filesystem”.

When is POLYROB a better fit than a coding-only agent?

POLYROB fits when coding is part of a wider job. It keeps a goal board and scheduled jobs that survive a restart, so a task such as “run the tests every morning and tell me what broke” keeps going between your messages. A step that needs your decision waits in an owner queue instead of ending with the chat turn ([email protected], docs/guide/[email protected]). You can reach it from Telegram, email, WhatsApp, Discord, Slack, Signal, Feishu / Lark and DingTalk as well as the terminal and a web console.

The coding side is real, if narrower than a dedicated tool. Beyond the nine actions above, a persistent shell runs background jobs, and code execution is opt-in ([email protected]). After an edit it can run optional diagnostics with pyright for Python and tsc for TypeScript and JavaScript, when those checkers are on your PATH (tools/coding/[email protected]). The snapshot is a shadow git history kept separate from your own .git, and it stores one file at a time (tools/coding/[email protected]).

Models are your choice: OpenAI, Anthropic, Google Gemini, DeepSeek, OpenRouter and NVIDIA NIM are built in, and any OpenAI- or Anthropic-compatible endpoint can be declared in providers.yaml. See the guide on the Claude AI agent to run Claude models in it. Its skills use the same SKILL.md format Claude Code uses, and it picks up skills from the ~/.claude/skills folder (docs/guide/[email protected]), so skills you wrote for Claude Code can carry over. For the safety model, read AI agent security and the self-hosted AI agent guide.

Where POLYROB falls short

There is no editor integration. POLYROB has no ACP support, so no in-editor diffs (docs/[email protected]).
There is no importer. Moving from another agent is manual.
It reaches eight chat apps, fewer than the biggest personal agents.
Its coding tool has nine actions, a smaller feature set than a dedicated coding agent.
Unattended runs stop at a step cap and a spend cap (150 steps and $2.00 per run by default, docs/[email protected]). That is a guard, not a daily budget.
It is a young project with a small community.

Which Claude Code alternative should you choose?

Choose Aider for terminal pair programming with any model and git history for every change.
Choose Cline if you live in VS Code or a JetBrains IDE and want diffs and checkpoints.
Choose Codex CLI if you already pay for ChatGPT and want OpenAI’s agent.
Choose OpenCode for an open-source terminal agent with a read-only planning mode.
Choose Gemini CLI only if you have a Code Assist licence; check the notice first.
Choose OpenHands to run several coding agents with schedules and webhooks.
Choose POLYROB if you want one self-hosted agent for code and for the work around it, reachable from your chat apps. Install it from the install page.

How do you try an alternative without dropping Claude Code?

They are separate programs, so run one beside the other for a week on a low-stakes repository. Give both the same small task, such as fixing one failing test, and compare the diffs. For POLYROB the first steps are two commands, per its README:

pipx install polyrob
polyrob doctor

FAQ

What is the best free alternative to Claude Code?

Cline, Codex CLI and Gemini CLI state an Apache licence on their pages, and POLYROB is MIT. The software costs nothing, but you still pay for model usage unless you run a local model.

Can I use a different model with these tools?

Aider and POLYROB both accept almost any model, including local ones. Codex CLI signs in with a ChatGPT plan or an API key. Check each tool’s model page, since support changes quickly.

Can I use my Claude Code skills elsewhere?

POLYROB reads the same SKILL.md format and picks up the ~/.claude/skills folder. For the other tools, check their docs.

Is there an alternative that works from my phone?

POLYROB can be reached from chat apps such as Telegram and WhatsApp. The other tools here are terminal, editor or desktop first, on the pages we read.

Which alternative runs fully locally?

Aider says it works with local models. POLYROB connects to a local server you run yourself, such as Ollama, through providers.yaml; it has no one-click local model setup.

Sources

Checked on 2026-11-13: Claude Code overview; READMEs of Aider, Cline, Codex CLI, OpenCode, Gemini CLI and OpenHands. POLYROB at v1.7.9: README.md, docs/CONFIGURATION.md, docs/comparison.md, docs/guide/skills.md, docs/guide/streams.md, tools/coding/tool.py, tools/coding/snapshot.py, tools/coding/lsp.py.

POLYROB is an open-source AI agent you run and own. Install it or read the docs.