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OpenCode

OpenCode

An open-source coding agent for the terminal, desktop, and IDE with 75+ model providers

Terminal Coding ToolCoding AgentOpen SourceTerminalTrial

OpenCode is an open-source AI coding agent for the terminal, desktop, and IDE. It runs multiple sessions in parallel, loads the right LSPs automatically, supports 75+ model providers and local models, and can share session links for debugging or review.

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Updated

2026-10-21

Platforms

Windows / macOS / Linux

Freemium

Freemium: OpenCode is open source and free to install, with free models included and support for your own provider API keys, including GitHub Copilot and ChatGPT Plus/Pro accounts. OpenCode Zen is an optional pay-as-you-go model gateway with a $20 starting balance, zero markups, and automatic top-up; confirm current model prices and limits on the official site.

* Pricing is for reference only; see the official site for current pricing.

OpenCode
opencode.ai

OpenCode Key Features

  • Open-source Agent

    Use the same open-source agent in the terminal, desktop app, or IDE extension.

  • Parallel Sessions

    Start multiple agents on the same project and switch between them without losing context.

  • Any Model

    Connect providers through Models.dev, or use GitHub Copilot and ChatGPT Plus/Pro accounts.

  • Share and LSP

    Share a link to any session and let OpenCode load the right language servers automatically.

OpenCode Best For

Privacy-sensitive engineering teams

Run an open-source agent locally with your own providers; the site states it does not store code or context data.

Terminal-first developers

Keep parallel sessions, LSP context, and coding tasks in one terminal workflow.

Developers with existing model subscriptions

Reuse GitHub Copilot or ChatGPT Plus/Pro accounts, or connect 75+ providers instead of buying another model plan.

Pros

  • Open source with free models included and free installation
  • Supports 75+ model providers and local models
  • Runs multiple sessions in parallel with LSP-aware context
  • Can reuse GitHub Copilot or ChatGPT Plus/Pro subscriptions

Considerations

  • Model usage is billed separately by your provider or OpenCode Zen
  • Windows users are recommended to use WSL for the best experience
  • Using your own model providers requires API key configuration; Zen needs a separate account and balance

OpenCode Quick Start and Practical Tips

Quick start

  1. 1

    Install the agent and start it inside one repository, then connect a provider you already pay for, such as GitHub Copilot or your own API key, before writing a prompt.

  2. 2

    Open a second session for the same project instead of switching tasks in one thread: keep exploration in one session and the actual edit in another.

  3. 3

    Let it read files through the LSP-backed context first, then ask for the change. Accurate symbols come from the language server, not from pasting file contents.

Pro tip

Parallel sessions are the real advantage and also the easiest way to waste tokens. Give each session one goal and one directory, and start a fresh session when you switch tasks instead of stacking context. When a provider feels weak, switch models inside the same session before rewriting the prompt, because the surrounding context usually matters more than the model tier.

OpenCode Alternatives

If this tool is not the right fit, explore these alternatives