The best Codex alternatives

Anthropic's agentic coding tool that reads your codebase, edits files and runs commands from terminal, IDE, desktop or web.

• Developers delegating whole tasks, not just lines
• Large refactors and migrations
• Automating dev workflows from the terminal or CI

AI-first code editor (a VS Code fork) with agents, codebase-aware chat and fast autocomplete.

• Professional developers
• Teams moving from VS Code
• Agentic coding inside an editor

GitHub's AI pair programmer: completions, chat and coding agents across editors and GitHub itself.

• Developers already on GitHub
• Companies that need enterprise procurement
• Budget-minded coders

Google's open-source terminal agent for Gemini models, now for paid API keys and enterprise Code Assist licenses.

• Teams with a Gemini Code Assist Standard or Enterprise license
• Developers on Google Cloud who bill through Vertex AI
• People who want an open-source agent they can modify

Anthropic's assistant: the strongest long-form writer and careful reasoner in the consumer AI pack.

• Long-form writing and editing that should not sound like AI
• Analyzing long documents, contracts and codebases
• Coders who also want Claude Code

OpenAI's general-purpose assistant: writing, research, images, voice and agents in one chat box.

• Everyday writing, brainstorming and editing
• People who want one AI subscription that does everything
• Quick research, image generation and voice chat

Fair-code workflow automation with AI agents, full code control and self-hosting.

• Technical teams and developers
• Privacy-sensitive organizations that self-host
• Automation agencies

Google's assistant, wired into Gmail, Docs, Drive and the rest of your Google life.

• Google Workspace and Android users
• Research across your own Gmail and Drive
• Budget-conscious users who also want cloud storage