OpenAI Codex vs Void: Features, Pricing and User Reviews 2026
Compare features, pricing, reviews, and more to make an informed decision
OpenAI Codex
OpenAI Codex is an AI-powered coding assistant that writes, tests, and reviews code in your development environment and cloud.
Void
Void is a free open source AI code editor that gives you full privacy and lets you use any AI model.
OpenAI Codex
OpenAI Codex is an AI-powered coding assistant that writes, tests, and reviews code in your development environment and cloud.
Void
Void is a free open source AI code editor that gives you full privacy and lets you use any AI model.
OpenAI Codex
Writes code, fixes bugs, and adds tests
Works in terminal, IDE, cloud, and mobile
Automatic pull request reviews on GitHub
Runs multiple tasks at the same time
Provides detailed logs and test results
Supports custom setup through AGENTS.md files
Secure isolated environment for each task
Integrates with VS Code, Cursor, and Windsurf
Background cloud processing
Mobile app support for task management
Void
Tab autocomplete with smart code suggestions
Inline code editing with keyboard shortcuts
Agent Mode for creating and editing files
Gather Mode for safe read-only AI help
Support for GPT-4, Claude, Gemini, and local models
Direct API connection with no middleman
VS Code themes and extensions work perfectly
Checkpoint system to track AI changes
Terminal access for Agent Mode
Completely free and open source
OpenAI Codex
OpenAI Codex is included as part of your ChatGPT subscription and does not require a separate purchase. It is available across multiple plan levels, each with different usage limits.
ChatGPT Plus costs $20 per month and includes Codex with usage limits that allow about 30 to 150 local messages or 5 to 40 cloud tasks every 5 hours. This plan is best for developers working on a few focused coding sessions each week.
ChatGPT Pro costs $200 per month and provides significantly higher limits, allowing about 300 to 1,500 local messages or 50 to 400 cloud tasks every 5 hours. This plan suits developers who need Codex throughout their full workday across multiple projects.
Business, Education, and Enterprise plans include the same per-seat limits as Plus. However, plans with flexible pricing can purchase additional credits to go beyond included limits. For automatic pull request reviews on all repositories, flexible pricing is required.
Void
Void is completely free to use with no subscription fees or hidden costs. Being open source, you can download and use all features at no charge.
While Void itself is free, you may need to pay for the AI models you choose to use. For example, if you use GPT-4 or Claude through their APIs, those services charge based on usage. However, Void also supports completely free options like Gemini from Google and OpenRouter, which give you access to various AI models at no cost.
You can also run models locally on your own computer using tools like Ollama. This means zero ongoing costs after the initial setup. For students, hobbyists, or anyone watching their budget, Void offers powerful AI coding without any payment required for the editor itself.