Best OpenCode Alternatives in 2026
The best alternatives to OpenCode, including Codex CLI, Claude Code, Pi, Goose, Qwen Code, and Antigravity CLI, compared by models, pricing, and license, plus how to run several side by side.
OpenCode is the most popular open-source coding agent with free choice of provider. It is MIT-licensed and free, with a terminal UI, a desktop app, an IDE extension, built-in subagents, and a server with an SDK. If you want other open-source agents, or the labs' own agents for their models, the list below covers the best options. Paradev lets you keep OpenCode and run any of them beside it, each in its own Git worktree, so you can compare the diffs on your own code.
Our recommendation: keep OpenCode, and use Paradev to try the alternatives side by side on the same task. The list below covers open-source agents and the major labs' agents.
Download Paradev to run two agents on one task, or read Paradev vs OpenCode for how the two fit together. This guide is published by Paradev; recommendations describe workflow fit rather than benchmark results.
The Short Version
| Alternative | Best for | Models | How you pay | License |
|---|---|---|---|---|
| Codex CLI | Open-source agent from a major lab | OpenAI GPT models | ChatGPT plans, including limited use on Free, or API key | Open source (Apache-2.0) |
| Claude Code | Deep, multi-step work and the richest parallel modes | Claude | Claude Pro from $20/mo, Max from $100/mo, or API key | Proprietary |
| Pi | A minimal harness you shape with extensions | Any provider | Free; your own keys | Open source (MIT) |
| Goose | General-purpose agent with a desktop app | 15+ providers | Free; your own keys | Open source (Apache-2.0) |
| Qwen Code | Open models, local models, agent teams | Qwen, other APIs, or local | Coding Plan Pro $50/mo or pay-as-you-go | Open source (Apache-2.0) |
| Antigravity CLI | Free start with strong models | Gemini, plus Claude and gpt-oss | Free with weekly limits; Google AI Pro and Ultra; API key | Proprietary |
| Paradev | Running OpenCode and these agents side by side | Whatever each agent uses | Free tier; Pro $20, Team $60, Ultra $200 per user/month | Source-available (ELv2) |
Why Look for an OpenCode Alternative?
OpenCode is a strong default. Common reasons to look further:
- Worktrees and cloud runs. OpenCode does not document built-in worktrees or cloud runs, which other agents include.
- Tuned for one model. A lab's own agent is often strongest on that lab's models.
- A smaller harness. You want an agent with less built in, that you shape yourself.
- A second opinion. A different agent often solves the task OpenCode is stuck on.
The Best Alternatives
Codex CLI
OpenAI's agent is open source under Apache-2.0 and comes with ChatGPT plans. It has subagents, worktrees, codex exec for CI, an SDK, a GitHub Action, and cloud tasks. Choose it if you want an open-source agent with a major lab behind it.
See Codex vs OpenCode and Paradev vs Codex.
Claude Code
Anthropic's agent has the widest range of parallel modes: subagents, /batch runs across worktrees, cloud sessions, and Remote Control, plus plugins, skills, and hooks. It is proprietary and needs a paid Claude plan or an API key.
See Claude Code vs OpenCode and Paradev vs Claude Code.
Pi
Pi is a minimal, MIT-licensed harness that works with any provider. It skips subagents and permissions on purpose, and you add what you need with extensions. Choose it if OpenCode feels like too much.
Goose
Goose, now governed by the Linux Foundation's AAIF, is an Apache-2.0 general-purpose agent with a desktop app and 70+ MCP extensions. It works with 15+ providers.
Qwen Code
Qwen Code is Alibaba's Apache-2.0 agent. It runs Qwen, other APIs, or local models, and has subagents, agent teams, and worktrees. Choose it for open models and self-hosting.
Antigravity CLI
Google's agy runs async subagents that can each take a worktree and is free with weekly limits, with Gemini, Claude, and gpt-oss models. It is proprietary, but it is the most generous free option from a major lab.
See Paradev vs Google Antigravity.
Paradev (to run them all)
Paradev is not an agent. It is a desktop workspace that runs OpenCode and every agent above, each in its own Git worktree and terminal, on your own subscriptions and keys; Paradev never proxies model calls. OpenCode, Codex, Claude Code, Antigravity CLI, and Pi are built-in presets; Goose and Qwen Code run as custom commands. Give the same prompt to OpenCode and Codex in two workspaces, review both diffs in the Changes pane, and open a PR from the better one.
See Paradev vs OpenCode.
How To Choose
- For an open-source agent from a major lab, choose Codex CLI.
- For the richest parallel modes, choose Claude Code.
- For a minimal harness you build on, choose Pi.
- For a general-purpose agent with a desktop app, choose Goose.
- For open and local models, choose Qwen Code.
- For a free start with strong models, choose Antigravity CLI.
- To compare any of them with OpenCode on your own repository, use Paradev.
Verdict
OpenCode is the best open-source agent for any model, and many developers will keep it. Run OpenCode and one alternative on the same task in Paradev, compare the diffs, and keep whichever works best for each kind of task. For the full agent comparison, see Best Coding Agents.
What To Try First
- Keep OpenCode: launch it in a Paradev workspace.
- Add an alternative: start a second workspace from the same branch with Codex or Claude Code.
- Give both the same prompt: each agent works in its own worktree.
- Compare: review both diffs, run your checks, and open a PR from the better one.
Download Paradev, then see Multiple OpenCode Agents in Parallel.
Frequently Asked Questions
What is the best OpenCode alternative?
Codex CLI is the best open-source alternative from a major lab. Claude Code has the richest parallel features but is proprietary. Pi is the best choice for a smaller harness.
Is there another open-source agent like OpenCode?
Yes. Codex CLI (Apache-2.0), Pi (MIT), Goose (Apache-2.0), and Qwen Code (Apache-2.0) are open source.
Can I run OpenCode in parallel?
Yes. In Paradev, each OpenCode session gets its own workspace and Git worktree, so several sessions can work on one repository without overwriting each other's files.
Can I use OpenCode and Claude Code together?
Yes. Paradev runs both side by side, each in its own worktree. You pay each provider for its own usage.