OpenCode: A Comprehensive Review of the Open-Source Alternative to Codex CLI and Claude Code

Published: 18 June 2026
on channel: PurpleSchool | Anton Larichev
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In this video, we explore OpenCode, an open-source alternative to Codex CLI and Claude Code that works with any model: Codex by subscription, Claude by API, and I also cover open-source and local models. I demonstrate installation, configuration, and basic commands for a quick start. Next, we discuss skills—what they are, how to enable them, and why they're needed. We'll cover the planning mode, which allows the AI ​​to build step-by-step scenarios before executing tasks, and then we'll look at execution and verify the results. I'll also demonstrate a useful diff viewer and execution control mechanisms—code reviews and other convenient features for process management. Finally, I'll launch a local model for offline operation and connect via an API, for example, to Claude.

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🕒 Timestamps:
00:00 — Intro
00:45 — About OpenCode
02:31 — Installation
03:11 — Basic Commands
05:44 — Skills
07:22 — Planning Mode
09:17 — Execution and Verification
12:57 — Execution Monitoring
14:41 — Running a Local Model
16:31 — API Connection
18:13 — Outro


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