OpenCode and Cline share a philosophy: open source, bring-your-own-model, no lock-in. Both let you point the agent at any provider's key and keep code and keys under your control. The difference is the surface they run on, terminal versus editor.
Summary
| Dimension | OpenCode | Cline |
|---|---|---|
| Form factor | Terminal TUI (client-server) | VS Code extension |
| License | Open source | Open source |
| Models | Any provider, BYO key | Any provider, BYO key |
| Workflow | Terminal-driven agent loop | Visual plan & act, inline diffs |
| Remote / SSH | Native (runs in any shell) | Needs VS Code Remote |
| Best for | Terminal and remote workflows | In-editor development |
Because both are open source and model-agnostic, the decision is not about lock-in or model quality. It is about where you want the agent to live. OpenCode meets you in the terminal; Cline meets you in VS Code.
Terminal vs Editor
OpenCode's client-server design means the agent runs as a process you can attach to from a TUI, including on a remote machine over SSH. That makes it a natural fit for server-side work, headless environments, and developers who prefer the keyboard-driven terminal.
Cline lives inside VS Code. Its plan-and-act workflow shows you a plan, lets you approve it, then executes with inline diffs you review in the editor you already use. For developers whose entire workflow is in VS Code, that integration removes context switching.
Models and Cost
Both are bring-your-own-key and model-agnostic. Connect Claude, GPT, Gemini, or open-weight models and switch freely. Neither marks up model access, so your only cost is the provider's API price. This is the shared advantage over closed tools that bundle a subscription on top of model usage.
The BYO-key advantage
With both tools you pay the model provider directly at API rates, with no agent subscription. That makes total cost transparent and lets you route expensive tasks to a strong model and cheap tasks to a cheaper one. See LLM cost optimization.
Where OpenCode Wins
Terminal-native
Runs in any shell, including over SSH on remote machines.
Client-server architecture
Attach and detach from a running agent session.
Editor-independent
No VS Code required. Works for vim, emacs, and headless users.
Where Cline Wins
In-editor workflow
Plan-and-act with inline diffs inside VS Code. No context switch.
Visual review
See and approve changes in the editor before they land.
MCP and extensions
Taps the VS Code ecosystem and MCP tool integrations.
Decision Framework
| Your situation | Best choice | Why |
|---|---|---|
| Work in the terminal | OpenCode | TUI-native, keyboard-driven. |
| Work on remote / SSH | OpenCode | Runs in any shell without VS Code Remote. |
| Live in VS Code | Cline | In-editor plan-and-act with inline diffs. |
| Want visual diff review | Cline | Approve changes in the editor. |
| Use vim / emacs / headless | OpenCode | Editor-independent. |
Frequently Asked Questions
Is OpenCode or Cline better?
Both are open-source and model-agnostic. OpenCode for terminal and remote work; Cline for in-editor VS Code development. Pick by where you code.
Are they free?
Yes, both are free and open source. You pay only for the model API you connect.
What is the main difference?
The surface: OpenCode is a terminal TUI; Cline is a VS Code extension. Same BYO-key, open-source model underneath.
Can I use any model?
Yes. Both connect to Claude, GPT, Gemini, or open-weight models via API key, with no markup.
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WarpGrep Boosts Any Open-Source Agent
WarpGrep v2 adds 2-3 points on SWE-bench Pro to every model tested. It runs as an MCP server inside OpenCode, Cline, and any tool that supports MCP. Better search means better context means better code.