Software Alternatives, Accelerators & Startups

IntelliJ IDEA VS OpenAI Codex CLI

Compare IntelliJ IDEA VS OpenAI Codex CLI and see what are their differences

IntelliJ IDEA logo IntelliJ IDEA

Capable and Ergonomic IDE for JVM

OpenAI Codex CLI logo OpenAI Codex CLI

Frontier reasoning in the terminal
  • IntelliJ IDEA Landing page
    Landing page //
    2023-07-20
Not present

IntelliJ IDEA features and specs

  • Intelligent Code Completion
    IntelliJ IDEA offers advanced code completion features, which help to speed up coding by suggesting relevant keywords, variable names, and methods. It understands the context of the code, making suggestions more accurate and useful.
  • Powerful Refactoring
    IntelliJ IDEA provides an extensive set of refactoring tools that simplify code restructuring. Developers can easily rename, move, and change the signature of classes and methods without breaking the application.
  • Integrated Version Control
    Supports various version control systems such as Git, SVN, and Mercurial. This integration allows seamless code commits, merges, and history tracking directly within the IDE.
  • Rich Plugin Ecosystem
    Offers a vast library of plugins to extend its functionalities by adding support for additional languages, frameworks, and tools, making it highly customizable.
  • Built-in Terminal
    Includes a powerful built-in terminal that allows for command-line operations without leaving the IDE, improving workflow efficiency.
  • Cross-Platform Support
    IntelliJ IDEA is available for Windows, macOS, and Linux, providing consistency for developers who work across different operating systems.
  • Comprehensive Debugging
    Features advanced debugging tools that provide detailed inspection of variable states, stack traces, and execution flow, making it easier to identify and fix issues.
  • User-Friendly Interface
    Offers a highly intuitive and customizable user interface that simplifies navigation and enhances productivity.

Possible disadvantages of IntelliJ IDEA

  • Resource Intensive
    IntelliJ IDEA can be very demanding on system resources, such as RAM and CPU, which may affect performance on less powerful machines.
  • Steep Learning Curve
    New users may find it challenging to learn all of its features and settings, as the IDE offers a wide range of tools and options.
  • Cost
    While there is a free Community edition, the Ultimate edition with full features requires a paid license, which can be expensive for individual developers or small teams.
  • Occasional Sluggishness
    Users may experience occasional sluggish performance, especially with large projects or extensive usage of plugins.
  • Initial Setup Complexity
    Setting up IntelliJ IDEA for the first time, particularly for specific project configurations, can be time-consuming and complex.
  • Frequent Updates
    While regular updates are beneficial for security and new features, they can sometimes cause interruptions or require downtime to install.
  • Dependency on Plugins
    Some key functionalities may rely heavily on third-party plugins, which can sometimes lag in updates or lack sufficient documentation.

OpenAI Codex CLI features and specs

  • Efficiency
    Codex CLI allows developers to generate code snippets quickly, improving productivity and reducing the time spent on manual coding tasks.
  • Ease of Use
    With natural language processing capabilities, Codex CLI allows users to interact with the tool using simple commands, making it accessible even for those with limited programming knowledge.
  • Integration
    Codex CLI can be integrated into various development environments, allowing seamless transition between AI-assisted coding and traditional coding workflows.
  • Iterative Feedback
    The CLI provides immediate feedback on code input, which helps developers quickly understand and iterate on their implementations.
  • Versatility
    Codex CLI supports a wide range of programming languages and paradigms, making it useful in diverse coding scenarios.

Possible disadvantages of OpenAI Codex CLI

  • Accuracy Limitations
    The generated code may not always be perfectly accurate or optimized, requiring manual review and adjustments by experienced developers.
  • Dependency on Internet
    Since Codex CLI relies on online resources to function, its usability can be affected by internet connectivity issues.
  • Learning Curve
    While designed for simplicity, there is still a learning curve associated with understanding the limitations and best use cases for Codex CLI.
  • Ethical Concerns
    Relying on AI for code generation could raise concerns about the originality of code, intellectual property rights, and potential biases in the training data.
  • Cost
    Depending on OpenAI's pricing model, using Codex CLI might involve costs that can accumulate, especially for large-scale or long-term projects.

Analysis of IntelliJ IDEA

Overall verdict

  • IntelliJ IDEA is widely considered to be one of the best IDEs available for Java and Kotlin development, providing a comprehensive suite of tools that cater to both professional developers and beginners.

Why this product is good

  • IntelliJ IDEA, developed by JetBrains, is highly regarded for its robust feature set, including intelligent code completion, deep static analysis, powerful refactoring tools, and a wide range of plugins. It supports multiple programming languages, mainly focusing on Java, Kotlin, and Android development. The integrated development environment (IDE) is appreciated for its intuitive interface and seamless integration with various build tools and version control systems, which enhances productivity and efficiency in software development.

Recommended for

  • Java Developers
  • Kotlin Developers
  • Android Developers
  • Software Engineers requiring advanced debugging and testing tools
  • Teams looking for integration with version control systems
  • Developers needing a customizable and extensible IDE

IntelliJ IDEA videos

Overview of IntelliJ IDEA

More videos:

  • Review - Why I Use IntelliJ IDEA
  • Review - Be More Productive With IntelliJ IDEA by Trisha Gee

OpenAI Codex CLI videos

OpenAI Codex CLI

More videos:

  • Review - My Honest Review of OpenAI Codex CLI - Is It Worth It?

Category Popularity

0-100% (relative to IntelliJ IDEA and OpenAI Codex CLI)
IDE
100 100%
0% 0
Developer Tools
88 88%
12% 12
Text Editors
98 98%
2% 2
AI
0 0%
100% 100

User comments

Share your experience with using IntelliJ IDEA and OpenAI Codex CLI. For example, how are they different and which one is better?
Log in or Post with

Reviews

These are some of the external sources and on-site user reviews we've used to compare IntelliJ IDEA and OpenAI Codex CLI

IntelliJ IDEA Reviews

Explore 9 Top Eclipse Alternatives for 2024
Developed by JetBrains, IntelliJ IDEA is a versatile Integrated Development Environment (IDE) initially built for Java and Kotlin, but extends its prowess to incorporate a myriad of other languages through plugins. A unique and user-centric environment favorably touted for its tuneability and keyboard shortcuts that enhance productivity, IntelliJ IDEA has grown to compete...
Source: aircada.com
Top 10 Android Studio Alternatives For App Development
IntelliJ IDEA is an IDE that was developed by JetBrains and is written in Java, Groovy, and Kotlin. It helps in building the IntelliJ IDEA community from the source code and also produces high-quality code.
The Best IDEs for Java Development: A Comparative Analysis
Intelligent Coding Assistance: What sets IntelliJ IDEA apart is its intelligent coding assistance. It seems to understand your code, predict your needs, and assist you with a range of development tasks from start to finish. By virtually mapping your Java projects, it can detect errors, suggest code variants, conduct refactoring, and more. Itโ€™s like having a coding assistant!
Source: dev.to
20 Best Diff Tools to Compare File Contents on Linux
Intellij Idea is an enterprise development, cross-platform software for multiple operating systems. It is used to review the differences between any two files, folders, text sources, or database objects, as well as between local files and their repository versions.
Source: linuxopsys.com
9 Of The Best Android Studio Alternatives To Try Out
IntelliJ IDEA, the routine tasks like coding, are handled by IntelliJ IDEA, which leads to accelerated development. It also allows the programmer to focus on functionality.

OpenAI Codex CLI Reviews

We have no reviews of OpenAI Codex CLI yet.
Be the first one to post

Social recommendations and mentions

Based on our record, OpenAI Codex CLI seems to be more popular. It has been mentiond 15 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

IntelliJ IDEA mentions (0)

We have not tracked any mentions of IntelliJ IDEA yet. Tracking of IntelliJ IDEA recommendations started around Mar 2021.

OpenAI Codex CLI mentions (15)

  • Building a Rust API with Claude Sonnet 4.5
    Sonnet has proven itself to be very powerful and capable of handling complex tasks, but lately the community were claiming that Claude is slowly getting worse and it's not as good as it first was. This is especially after OpenAI released their leading coding model Codex model for their open source Codex CLI. - Source: dev.to / 3 days ago
  • No โ€œresumeโ€ in Codex CLI, so I built one: quickly โ€œcontinueโ€ with `codex-history-list`
    Codex CLI is an AI coding agent that runs in your terminal, but thereโ€™s still no official โ€œresumeโ€ feature. - Source: dev.to / about 1 month ago
  • Codex CLI: Running GPT-OSS and Local Coding Models with Ollama, LM Studio, and MLX
    This file allows you to configure providers and create profiles for different models. Some options arenโ€™t fully documented yet, but you can explore the Codex source code for details. You can also configure MCP servers here. - Source: dev.to / about 1 month ago
  • GPT-5 for Developers
    You are looking for Codex CLI [0]. 0 - https://github.com/openai/codex. - Source: Hacker News / about 2 months ago
  • OpenAI Open Models
    Inference in Python uses harmony [1] (for request and response format) which is written in Rust with Python bindings. Another OpenAI's Rust libraries is tiktoken [2], used for all tokenization and detokenization. OpenAI Codex [3] is also written in Rust. It looks like OpenAI is increasingly adopting Rust (at least for inference). [1] https://github.com/openai/harmony [2] https://github.com/openai/tiktoken [3]... - Source: Hacker News / about 2 months ago
View more

What are some alternatives?

When comparing IntelliJ IDEA and OpenAI Codex CLI, you can also consider the following products

Microsoft Visual Studio - Microsoft Visual Studio is an integrated development environment (IDE) from Microsoft.

Zed - Zed is a high-performance, multiplayer code editor from the creators of Atom and Tree-sitter.

Xcode - Xcode is Appleโ€™s powerful integrated development environment for creating great apps for Mac, iPhone, and iPad. Xcode 4 includes the Xcode IDE, instruments, iOS Simulator, and the latest Mac OS X and iOS SDKs.

Awesome ChatGPT Prompts - Game Genie for ChatGPT

VS Code - Build and debug modern web and cloud applications, by Microsoft

DeepWiki by Congnition - Understand Any GitHub Repo with AI Wikis