OpenCode 2.0 Complete Guide 2026: The Next-Generation AI Coding Agent Where TUI, Desktop, and Web Stay in Sync

"What is OpenCode v2?" "How is it different from V1? How much better is it?"

OpenCode has grown popular as an open-source AI coding agent that runs in your terminal. And in 2026,OpenCode 2.0 (beta) arrived.

The biggest feature of V2 is that TUI, desktop, and web all share the same backend, andstate syncs automatically. Plus, thenew server architecture reduces resource consumption.

In this article, I'll explain what OpenCode 2.0 is and how much better it is than V1, based on the official docs, in beginner-friendly terms.

What You'll Learn in This Article

What OpenCode 2.0 is
What makes it great (V1 comparison)
3 breaking changes
Installation
Basic usage
How to migrate from V1

What Is OpenCode 2.0?

OpenCode 2.0 is the next-generation version of an open-source AI coding agent you can use in your terminal, desktop, and web.

Official description: "OpenCode 2 installs and runs as opencode2. It does not replace OpenCode 1's opencode binary, so you can keep both versions installed and run them side by side."

Currently in beta (will become OpenCode 2.0)
Works with any LLM provider by configuring an API key
Same category as Claude Code and Codex (AI coding agents)

What Makes It Great? (V1 Comparison)

Here's a summary of what makes OpenCode 2.0 better.

Item	OpenCode V1	OpenCode 2.0
Backend	Tightly coupled to the frontend	Runs an independent server in the background
TUI/Desktop/Web sync	Separate	All share the same backend and sync automatically
Resource usage	Uses resources to display the UI	Optimized by server architecture; 3rd-party tools can use it
Server API	Old API	New more ergonomic API + new clients
Plugins	Old plugin API	New plugin API
Config file	tui.json(c) (layered)	cli.json (unified; auto-migrated)

Main strengths

All UIs share the same backend

All instances of TUI, desktop, and web share the same backend
State syncs automatically no matter where you operate

Runs as a background server

V2 runs a server in the background
You and your 3rd-party tools can use OpenCode without it eating up your computer's resources

New server API and clients

Adopts a more ergonomic server API
Use the new clients via the @opencode-ai/client package

Works with any LLM provider

Select any provider with /connect
Use your preferred model — Claude, GPT, DeepSeek, and more

3 Breaking Changes

V2 has three intentional breaking changes:

Plugins: switched to a new plugin API
Server API and clients: switched to new contracts
TUI config: layered tui.json(c) → one global cli.json (auto-migrated)

Otherwise, V1 functionality is intended to remain compatible.

Installation

Install script (easiest)

curl -fsSL https://raw.githubusercontent.com/anomalyco/opencode/v2/install | bash

Package managers

# npm
npm install -g @opencode-ai/cli@next

# bun
bun install -g --trust @opencode-ai/cli@next

# pnpm
pnpm add -g --allow-build=@opencode-ai/cli @opencode-ai/cli@next

# yarn
yarn global add @opencode-ai/cli@next

The package selects the native opencode2 binary for your platform.

Prerequisites

A modern terminal emulator (Ghostty, WezTerm, Alacritty, Kitty, etc.)
API keys for the LLM providers you want to use

Launch

opencode2

※In beta, Homebrew, Arch Linux, and native Windows installs are not yet available (Windows: use WSL).

Basic Usage

1. Connect a provider

/connect

Select a provider in the TUI and set your API key.

2. Ask about your codebase

How is authentication handled in @packages/functions/src/api/index.ts

3. Add a feature

When a user deletes a note, flag it as deleted in the database.
Create a screen that shows recently deleted notes.
From this screen, the user can restore a note or permanently delete it.

4. Undo changes

/undo

Stages a conversation revert and restores your original message (in a Git repo, also restores file changes). Use /redo to restore.

5. Browse models

/models

Browse the providers and models available to your project.

How to Migrate from V1

Let OpenCode migrate for you (recommended)

Ask OpenCode to update your config to the native V2 format.

Migrate my OpenCode configuration, including file-based definitions, from the V1 format to the native V2 format.
Preserve its behavior and all unrelated settings.

Reuse existing config

V2 reads the same config locations as V1.

~/.config/opencode/opencode.json(c)
<project>/opencode.json(c)
<project>/.opencode/opencode.json(c)

It's designed so you don't need to convert your V1 config.

Verify before relying on it

Start opencode2 in a project and verify your model, provider credentials, agents, permissions, MCP servers, and plugins before relying on the beta for regular work. Keep your V1 setup until you confirm the V2 behavior you need.

Pros and Cons

Pros

TUI, desktop, and web share the same backend and sync automatically
Background server optimizes resource usage
Works with any LLM provider
Auto-migrates from V1 config; run V1 and V2 side by side
Open-source and free
New ergonomic server API and clients

Cons and notes

Beta: APIs, config, and plugin APIs may change
3 breaking changes (plugin API, server API, config format)
Homebrew and native Windows not yet available
V1 plugins need porting to the new API

OpenCode 2.0 keeps the TUI, desktop app and web UI on one backend, so a server that stays on makes switching between them easier.

Nous PortalVerified

One account for many models and tools. Handy when you want to run agents like OpenCode without juggling API keys.

Check the official website →

Summary

OpenCode 2.0 is a next-generation open-source AI coding agent where TUI, desktop, and web stay in sync on one backend.

All UIs share the backend and sync automatically
Background server optimizes resource usage
Works with any LLM provider
Auto-migrates from V1; run side by side
Open-source and free

For anyone "looking for an alternative to Claude Code or Codex" or "wanting a more comfortable V1," OpenCode 2.0 is a strong option.

Reference: OpenCode v2 Docs ・ OpenCode Changelog ・ OpenCode GitHub