OpenAI Codex vs Tabby: 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.
Tabby
Tabby is an open-source, self-hosted AI coding assistant that helps developers write code faster with smart suggestions and context understanding.
OpenAI Codex
OpenAI Codex is an AI-powered coding assistant that writes, tests, and reviews code in your development environment and cloud.
Tabby
Tabby is an open-source, self-hosted AI coding assistant that helps developers write code faster with smart suggestions and context understanding.
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
Tabby
Real-time code suggestions and completion
Built-in Answer Engine for coding questions
Works offline without internet connection
Supports multiple programming languages
IDE integration for VSCode, IntelliJ, and Vim
Self-hosted for complete data control
Team management and user permissions
Usage analytics and reporting
Open source with active community
Consumer-grade GPU support
OpenAPI integration capabilities
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.
Tabby
Tabby offers three pricing plans to fit different team sizes and needs.
The Community plan is completely free and supports up to 5 users. It includes all core features like code completion, Answer Engine, inline chat, and context providers. This plan works great for individuals, small teams, and freelancers who want to try self-hosted AI coding.
The Team plan costs $19 per user per month and supports up to 50 users. It adds usage reports, analytics, enforcement of IDE settings, and email support. This plan fits growing development teams that need better management tools.
The Enterprise plan has custom pricing and supports unlimited users. It includes everything from Team plus single sign-on, custom authentication, dedicated Slack support, and priority access to new features. Large companies get annual billing and personalized service to match their specific needs.