AI stackHarnesses

OpenCode

Harness · terminal agent

The jobOpen-source coding agent with a terminal UI, desktop app and IDE integrationsVisit opencode.ai

Best forTerminal users who want one agent across 75+ providers, with MCP and skills

Skip ifYou want models bundled in one plan, or an editor-first tool with tab completion

Verified Oct 5, 20264 sourcesLive

OpenCode also appears in Alternatives to Claude Code, Alternatives to OpenAI Codex, Alternatives to Cline

Editor notes

A model-agnostic open-source agent: terminal UI first, plus desktop and IDE, with 75+ providers via Models.dev. The tool is free; you pay providers directly or top up OpenCode Zen, a pay-as-you-go gateway with zero markup per request. A v2 is announced in the docs.

Open-source AI coding agent for terminal, desktop and IDE, with 75+ providers.

Summary

OpenCode is an open-source coding agent with a terminal UI, desktop app and IDE integrations. It connects to 75+ LLM providers through Models.dev (including local models), lets you sign in with a ChatGPT Plus/Pro account, and supports MCP servers, Agent Skills, LSP and custom tools. The team also runs OpenCode Zen, a pay-as-you-go gateway of models tested for coding agents.

Key details

Surface	CLI/TUIdesktopIDEweb
Platforms	macoswindowslinuxweb
BYOK (Bring Your Own Key)	✓ Yes
MCP Support	✓ Yes
Agent Skills Support	✓ Yes
Open Source	✓ Yes(MIT)

Installation

Terminal

curl -fsSL https://opencode.ai/install | bash

Alternative installation methods:

npm i -g opencode-ai@latest

brew install anomalyco/tap/opencode

Repository

Pricing

From the vendor's pricing pageVerified Oct 5, 2026

Plan	Price	Basis
Open source	Free
OpenCode Zen	$20	Pay-as-you-go balance of $20 (+$1.23 card fee), auto top-up at $5; zero markup per request

Sources

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