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Codex vs OpenCode: Which AI Coding Agent Should You Use in Your Terminal?

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A developer spent several months stress-testing two terminal-based AI coding agents — OpenAI's Codex and OpenCode — as alternatives after moving away from Claude Code. Codex was found to be the stronger choice for most users, offering faster setup (around 90 seconds), polished defaults, and a low-friction workflow from prompt to code diff. OpenCode, by contrast, supports over 75 providers and 1,000-plus models, making it more cost-effective and flexible for power users willing to invest time in configuration. On pricing, features, and model freedom, OpenCode holds an edge for heavy or highly customized workloads, while Codex wins on ease of onboarding and daily usability. The reviewer's overall recommendation is Codex for general users and OpenCode for those who prioritize deeper control over their development environment.

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