CodeAssist vs. CodeGen vs. DevPromptAi vs. OpenAI Codex Comparison


CodeAssist	CodeGen Salesforce	DevPromptAi	OpenAI Codex OpenAI
Learn More Update Features	Learn More Update Features	Learn More Update Features	Learn More Update Features



About When you work with CodeAssist plugin/extension, the code that CodeAssist works with is sent to the CodeAssist API. Your code is processed there to generate CodeAssist response (in the form of code change or message). Currently, the processed code is not stored on the server. If there are any changes to that, I'll let you know. If you don't use "Complete" feature (ALT+X shortcut), then it only processes the file that you have open in the editor. If you use "Complete" feature, then it processes other files in your codebase as well. As part of generating response, CodeAssist sends the code to OpenAI API. OpenAI stores the code for 1 month to provide and maintain their services, comply with applicable law, and enforce their policies. The code is not used by OpenAI for improvement of their services or training of their models.	About CodeGen is an open-source model for program synthesis. Trained on TPU-v4. Competitive with OpenAI Codex.	About Seamlessly generate and update your code with intelligent suggestions and recommendations using OpenAI. Identify and fix bugs in your code more efficiently with AI-powered debugging assistance. Get clear explanations and documentation for complex code snippets and algorithms. Craft compelling technical documentation, meeting notes, and blog posts with precision and clarity. DevPromptAi is free to use. You will need to have a working OpenAI API key in order to use the app. When you use the OpenAI API key, you pay directly to OpenAI for the amount of credits/tokens you use. Your API is safe and stored encrypted locally on your device in the browser's local storage. Requests to Open AI's API are sent directly from your browser window. DevPromptAi only stores your API key locally and never sends your API key anywhere.	About Codex is an AI-powered coding agent from OpenAI designed to help developers build, manage, and ship software more efficiently across the entire development lifecycle. It acts as an intelligent pair programmer that can understand codebases, generate features, and deliver production-ready pull requests. Codex can safely execute commands in sandboxed environments while assisting with debugging, refactoring, and testing. A key advancement is its computer use capability, allowing it to operate your computer by seeing, clicking, and typing across applications. This enables Codex to interact with tools that don’t have APIs, making it useful for tasks like frontend testing and app navigation. The platform also includes an in-app browser and integrations with various developer tools for a more unified workflow. Codex supports automation by handling ongoing tasks such as monitoring, issue triage, and follow-ups.
Platforms Supported Windows Not Supported Mac Not Supported Linux Not Supported Cloud Supported On-Premises Not Supported iPhone Not Supported iPad Not Supported Android Not Supported Chromebook Not Supported	Platforms Supported Windows Not Supported Mac Not Supported Linux Not Supported Cloud Supported On-Premises Supported iPhone Not Supported iPad Not Supported Android Not Supported Chromebook Not Supported	Platforms Supported Windows Not Supported Mac Not Supported Linux Not Supported Cloud Supported On-Premises Not Supported iPhone Not Supported iPad Not Supported Android Not Supported Chromebook Not Supported	Platforms Supported Windows Supported Mac Supported Linux Supported Cloud Supported On-Premises Not Supported iPhone Supported iPad Supported Android Supported Chromebook Not Supported
Audience Developers that need a human-like chatbot solution that writes code in the editor and answers questions	Audience Developers interested in a large language model for code	Audience Developers and professionals seeking an AI solution to boost their productivity	Audience Codex is ideal for software developers, engineering teams, and tech organizations that want to automate coding tasks, leverage AI-driven workflows, and utilize computer-based automation to accelerate software development
Support Phone Support Not Supported 24/7 Live Support Not Supported Online Supported	Support Phone Support Not Supported 24/7 Live Support Not Supported Online Not Supported	Support Phone Support Not Supported 24/7 Live Support Not Supported Online Supported	Support Phone Support Not Supported 24/7 Live Support Not Supported Online Supported
API Offers API Not Supported	API Offers API Not Supported	API Offers API Supported	API Offers API Supported
Screenshots and Videos View more images or videos	Screenshots and Videos View more images or videos	Screenshots and Videos View more images or videos	Screenshots and Videos View more images or videos
Pricing Free Free Version Supported Free Trial Not Supported	Pricing Free Open source Free Version Supported Free Trial Not Supported	Pricing Free Free Version Supported Free Trial Not Supported	Pricing $20/month Free Version Supported Free Trial Supported
Reviews/Ratings Overall 0.0 / 5 ease 0.0 / 5 features 0.0 / 5 design 0.0 / 5 support 0.0 / 5 This software hasn't been reviewed yet. Be the first to provide a review: Review this Software	Reviews/Ratings Overall 0.0 / 5 ease 0.0 / 5 features 0.0 / 5 design 0.0 / 5 support 0.0 / 5 This software hasn't been reviewed yet. Be the first to provide a review: Review this Software	Reviews/Ratings Overall 0.0 / 5 ease 0.0 / 5 features 0.0 / 5 design 0.0 / 5 support 0.0 / 5 This software hasn't been reviewed yet. Be the first to provide a review: Review this Software	Reviews/Ratings Overall 5.0 / 5 ease 5.0 / 5 features 5.0 / 5 design 5.0 / 5 support 5.0 / 5 Read all reviews
			Pros & Cons from Real Users Pros OpenAI Codex feels less like a coding assistant and more like a junior developer that can execute tasks independently. For knowledge workers juggling technical and non technical work, this shift is powerful because it can take a task, work through it, and return with usable results. Its ability to operate across full codebases is a major strength, allowing it to write, debug, test, and manage multiple files in a way that fits real world development workflows. The multi agent and automation capabilities are particularly useful since you can run parallel tasks and orchestrate work efficiently, which significantly improves productivity on complex projects. It is also expanding beyond pure coding with features that allow interaction with software environments, making it feel like a broader work assistant. Cons Codex can still struggle with very large or highly complex projects without iteration, and outputs often need refinement through multiple passes. The setup and workflow can feel heavier compared to simpler tools, especially when integrating with repositories or managing environments. There is also strong competition, and in some advanced or highly structured coding scenarios other tools may feel more precise.
Training Documentation Not Supported Webinars Not Supported Live Online Not Supported In Person Not Supported	Training Documentation Supported Webinars Not Supported Live Online Not Supported In Person Not Supported	Training Documentation Supported Webinars Not Supported Live Online Not Supported In Person Not Supported	Training Documentation Supported Webinars Not Supported Live Online Not Supported In Person Not Supported
Company Information CodeAssist www.codeassist.tech/index.html	Company Information Salesforce Founded: 1999 United States github.com/salesforce/CodeGen	Company Information DevPromptAi devprompt.ai/	Company Information OpenAI Founded: 2015 United States openai.com
Alternatives CodeNext	Alternatives T5 Google	Alternatives Genie AI	Alternatives Google AI Studio Google
DevPromptAi	StarCoder BigCode	16x Prompt	Perplexity Computer Perplexity AI
Genie AI	ChatGPT Pro OpenAI	CodeAssist	Bolt.new StackBlitz
Gemini Code Assist Google	ChatGPT Enterprise OpenAI	CodeNext	Codex CLI OpenAI
16x Prompt View All	Codestral Mistral AI View All	ChatGPT Canvas OpenAI View All	Claude Code Anthropic View All
Categories AI Code Generators Supported AI Coding Assistants Supported AI Tools Supported	Categories AI Code Generators Supported AI Coding Assistants Supported AI Coding Models Supported AI Models Supported AI Tools Supported Large Language Models Supported	Categories AI Code Generators Supported AI Coding Assistants Supported	Categories Agentic AI Supported Agentic CLI Coding Tools Supported AI Agents Supported AI Code Generators Supported AI Coding Agents Supported AI Coding Assistants Supported AI Computer Use Agents (CUA) Supported AI Tools Supported Vibe Coding Supported

Integrations Amazon Web Services (AWS) Not Supported Archimyst Not Supported Atrix AI Not Supported Backslash Security Not Supported Conductor Not Supported Devin Desktop Not Supported GPT-5.1-Codex-Max Not Supported GPT-6 Luna Not Supported LaReview Not Supported LunaRoute Not Supported MemPalace Not Supported Nuphos Not Supported OpenSpec Not Supported Overmind Not Supported Python Not Supported React Not Supported Scalekit Not Supported Spokenly Not Supported SubQ 1.1 Small Not Supported pay.sh Not Supported Show More Integrations View All 8 Integrations	Integrations Amazon Web Services (AWS) Not Supported Archimyst Not Supported Atrix AI Not Supported Backslash Security Not Supported Conductor Not Supported Devin Desktop Not Supported GPT-5.1-Codex-Max Not Supported GPT-6 Luna Not Supported LaReview Not Supported LunaRoute Not Supported MemPalace Not Supported Nuphos Not Supported OpenSpec Not Supported Overmind Not Supported Python Supported React Not Supported Scalekit Not Supported Spokenly Not Supported SubQ 1.1 Small Not Supported pay.sh Not Supported Show More Integrations View All 6 Integrations	Integrations Amazon Web Services (AWS) Not Supported Archimyst Not Supported Atrix AI Not Supported Backslash Security Not Supported Conductor Not Supported Devin Desktop Not Supported GPT-5.1-Codex-Max Not Supported GPT-6 Luna Not Supported LaReview Not Supported LunaRoute Not Supported MemPalace Not Supported Nuphos Not Supported OpenSpec Not Supported Overmind Not Supported Python Not Supported React Not Supported Scalekit Not Supported Spokenly Not Supported SubQ 1.1 Small Not Supported pay.sh Not Supported Show More Integrations View All 3 Integrations	Integrations Amazon Web Services (AWS) Supported Archimyst Supported Atrix AI Supported Backslash Security Supported Conductor Supported Devin Desktop Supported GPT-5.1-Codex-Max Supported GPT-6 Luna Supported LaReview Supported LunaRoute Supported MemPalace Supported Nuphos Supported OpenSpec Supported Overmind Supported Python Supported React Supported Scalekit Supported Spokenly Supported SubQ 1.1 Small Supported pay.sh Supported Show More Integrations View All 292 Integrations
Claim CodeAssist and update features and information Claim CodeAssist and update features and information	Claim CodeGen and update features and information Claim CodeGen and update features and information	Claim DevPromptAi and update features and information Claim DevPromptAi and update features and information	Claim OpenAI Codex and update features and information Claim OpenAI Codex and update features and information