OpenCode and Kilo Code are both open-source, bring-your-own-model agents that compete for developers who want capability without lock-in. Kilo Code is a VS Code superset of Roo and Cline features. OpenCode is a terminal-native agent. The split is terminal versus editor, again.
Summary
| Dimension | OpenCode | Kilo Code |
|---|---|---|
| Form factor | Terminal TUI (client-server) | VS Code extension |
| Positioning | Terminal-native agent | Superset of Roo Code + Cline |
| Modes / config | Config-driven | Marketplace of modes and rules |
| Models | Any provider, BYO key | Any provider, BYO key |
| Remote / SSH | Native | Needs VS Code Remote |
| Best for | Terminal / remote work | Feature-rich in-editor work |
Both are open source and model-agnostic, so neither locks you in. Kilo Code maximizes in-editor features and configurability; OpenCode maximizes terminal portability.
Terminal vs Editor
Kilo Code is for developers who want the richest configurable agent inside VS Code. By absorbing Roo Code and Cline ideas, it offers a broad set of modes, rules, and integrations in a familiar editor surface. If your workflow is VS Code, it removes the need to choose between those tools.
OpenCode is for developers who want the agent in the terminal. Its client-server architecture runs in any shell, including remote machines over SSH, and does not depend on an editor. For server-side, headless, or keyboard-driven work, that portability wins.
Models and Cost
Both are bring-your-own-key and model-agnostic. Connect Claude, GPT, Gemini, or open-weight models and switch freely, with no markup on model access. Your only cost is the provider's API price.
Route your model spend
Because both bill you only for model usage, you can send hard tasks to a strong model and easy tasks to a cheaper one. See LLM cost optimization.
Where OpenCode Wins
Terminal-native
Runs in any shell, including over SSH on remote machines.
Editor-independent
No VS Code required. Works for any editor or headless.
Client-server sessions
Attach and detach from a running agent.
Where Kilo Code Wins
Feature superset
Combines Roo Code and Cline capabilities in one tool.
Mode marketplace
Configurable modes and rules for different workflows.
In-editor experience
Rich VS Code integration with visual review.
Decision Framework
| Your situation | Best choice | Why |
|---|---|---|
| Work in the terminal | OpenCode | TUI-native, runs anywhere. |
| Work on remote / SSH | OpenCode | No VS Code Remote needed. |
| Live in VS Code | Kilo Code | Feature-rich in-editor agent. |
| Want Roo + Cline features | Kilo Code | Positioned as a superset of both. |
| Use any editor / headless | OpenCode | Editor-independent. |
Frequently Asked Questions
Is OpenCode or Kilo Code better?
Both open-source and model-agnostic. OpenCode for terminal and remote work; Kilo Code for feature-rich VS Code development.
What is Kilo Code?
An open-source VS Code agent that combined Roo Code and Cline features, with a marketplace of modes and broad model support.
Are they free?
Yes, both free and open source. You pay only for the model API.
What is the main difference?
Kilo Code runs in VS Code; OpenCode runs in the terminal. Same open-source, BYO-key foundation.
Related comparisons
OpenCode vs Cursor
Open-source, model-agnostic terminal agent vs the closed IDE. Bring-your-own-key vs bundled.
OpenCode vs Cline
Two open-source agents: terminal-native OpenCode vs the VS Code extension Cline.
OpenCode vs Aider
Modern multi-provider TUI agent vs the original git-native pair programmer.
OpenCode vs Gemini CLI
Provider-agnostic open-source agent vs Google's free-tier Gemini terminal agent.
OpenCode vs Goose
Two open-source agents: OpenCode's TUI vs Block's extensible Goose.
OpenCode vs Claude Code
Open-source terminal agent vs Anthropic's Claude Code.
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, Kilo Code, and any tool that supports MCP. Better search means better context means better code.