As a developer, you're likely familiar with Claude Code, but you may be wondering if Codex is worth trying. With its improved model quality, cost-effective plans, and enhanced tooling, Codex has become an attractive option for many users. In this guide, we'll cover the key things you need to know when transitioning from Claude Code to Codex.
Introduction to Codex
Codex has come a long way since its inception, and its latest models, such as GPT-5.5, have shown significant improvements. Many users have started to compare Codex with Claude Code, and some have even made the switch due to its cost-effectiveness and usability. If you're already comfortable with Claude Code, you may be wondering if Codex is worth trying. The answer is yes, and here's why.
Why Choose Codex?
There are several reasons why Codex has become a popular choice among developers. Firstly, its model quality has improved significantly, making it a strong contender in the market. Additionally, Codex offers more usable capacity for the same subscription cost, making it a more attractive option for many users. The Codex App has also improved, providing a more polished settings UI and a better overall user experience.
Getting Started with Codex
If you're new to Codex, it's essential to start with the Codex App, rather than the CLI. The app provides a more user-friendly settings experience, and it's where most users start their journey with Codex. You can use Codex with a free ChatGPT account, but if you want to use it seriously, you'll need to consider the Plus or Pro plans.
Subscription Plans and Pricing
The pricing for Codex varies by region, but in general, the Plus plan costs around JPY 3,000, while the Pro plan costs either JPY 16,800 or JPY 30,000. It's essential to check the official pricing page for the most up-to-date information. When choosing between the Plus and Pro plans, consider your needs and budget. If you want to use the latest GPT-5.5 model heavily, the Pro plan is the better option. However, if you're on a budget, the Plus plan with GPT-5.4 can still provide a good setup for real coding work.
Permission Modes in Codex
Codex has several permission modes, including approval, plan, reviewer, and sandbox. These modes are designed to provide a more flexible and secure experience for users. The approval mode is the closest concept to Claude Code's permission mode, and it allows you to control when Codex needs to ask for approval before performing certain actions. The plan mode is separate from approval settings and can be turned on or off independently.
Configuration Files
Codex uses configuration files, including config.toml for general settings and .rules for command approval rules. These files provide a way to customize your Codex experience and ensure that it meets your specific needs.
In conclusion, Codex is a powerful tool that's worth considering, especially if you're already using Claude Code. With its improved model quality, cost-effective plans, and enhanced tooling, Codex can help you streamline your workflow and improve your productivity. Whether you're a seasoned developer or just starting out, Codex is definitely worth exploring.
AI summary
Codex’in sunduğu yeni yetenekler, fiyatlandırma seçenekleri ve Claude Code kullanıcıları için dikkat edilmesi gerekenler hakkında detaylı bir rehber.
