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In this video, I'll be telling you whether GPT-5.4 or Opus 4.6 is the better option right now, and whether Codex or Claude Code gives the better overall experience if you're planning to pay for just one AI coding subscription.

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Key Takeaways:

🚀 GPT-5.4 and Opus 4.6 are both strong models, but the real difference comes down to the overall product experience.
💸 Codex gives you access to ChatGPT, Codex Web, Atlas Browser, and generally better limits, but it can feel weaker for frontend work.
🛠️ Claude Code offers Opus 4.6 and Sonnet 4.6, strong integrations, great limits, and a much better out-of-the-box experience.
🎨 Opus 4.6 performs especially well for frontend and backend tasks, and gets even better when combined with skills.
📱 Claude Code now has mobile progress tracking, better web features, and keeps shipping useful updates very frequently.
🔗 Anthropic’s ecosystem, including Agent Skills and its SDK, feels more polished and stable compared to Codex right now.
👍 Overall, Claude Code is the better recommendation for most people, with GLM or a lower Codex plan as a useful secondary option.

AICodeKing

A personal comparison of Claude Code (Opus 4.6) versus OpenAI Codex (GPT 5.4) subscription plans at the $20 and $200 price tiers. The author favors Claude Code based on real-world usage, citing better frontend and backend results, richer integrations, a stronger community, more consistent model behavior across updates, and faster feature innovation. Codex is noted to have better usage limits currently but weaker frontend aesthetics and a less mature SDK. The recommendation is to use Claude Code as the primary tool, optionally supplemented by a $20 Codex plan and GLM for cost-effective coverage.

Codex (GPT-5.4) VS Claude Code (Opus 4.6): Which $20 / $200 subscription is the BEST for Coding?